{"id":2611,"date":"2026-09-25T00:33:57","date_gmt":"2026-09-24T17:33:57","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/"},"modified":"2026-09-25T00:33:57","modified_gmt":"2026-09-24T17:33:57","slug":"ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/","title":{"rendered":"\u1ed0ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac: ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;2611&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 b\u00ecnh ch\u1ecdn)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;\u1ed0ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac: ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u0110\u00e1nh gi\u00e1<\/span>\n    <\/div>\n    <\/div>\n<div class=\"custom-toc\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Noi_dung_chinh\" >N\u1ed9i dung ch\u00ednh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Tom_tat_nhanh_nen_chon_ong_han_hay_ong_duc\" >T\u00f3m t\u1eaft nhanh: n\u00ean ch\u1ecdn \u1ed1ng h\u00e0n hay \u1ed1ng \u0111\u00fac?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Ong_inox_han_va_ong_inox_duc_khac_gi_ve_che_tao_va_dac_tinh\" >\u1ed0ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac: kh\u00e1c g\u00ec v\u1ec1 ch\u1ebf t\u1ea1o v\u00e0 \u0111\u1eb7c t\u00ednh?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Ong_inox_han_Welded_Stainless_Steel_PipeTube\" >\u1ed0ng inox h\u00e0n (Welded Stainless Steel Pipe\/Tube)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Ong_inox_duc_Seamless_Stainless_Steel_PipeTube\" >\u1ed0ng inox \u0111\u00fac (Seamless Stainless Steel Pipe\/Tube)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Tieu_chuan_va_pham_vi_kich_thuoc_pho_bien_tai_Viet_Nam\" >Ti\u00eau chu\u1ea9n v\u00e0 ph\u1ea1m vi k\u00edch th\u01b0\u1edbc ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Chiu_ap_chiu_nhiet_va_moi_khac_biet_thuc_te\" >Ch\u1ecbu \u00e1p, ch\u1ecbu nhi\u1ec7t v\u00e0 m\u1ecfi: kh\u00e1c bi\u1ec7t th\u1ef1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#An_mon_moi_han_co_phai_la_%E2%80%9Cdiem_yeu%E2%80%9D\" >\u0102n m\u00f2n: m\u1ed1i h\u00e0n c\u00f3 ph\u1ea3i l\u00e0 \u201c\u0111i\u1ec3m y\u1ebfu\u201d?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#So_sanh_chi_phi_tien_do_va_gia_cong_hien_truong\" >So s\u00e1nh chi ph\u00ed, ti\u1ebfn \u0111\u1ed9 v\u00e0 gia c\u00f4ng hi\u1ec7n tr\u01b0\u1eddng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Huong_dan_chon_theo_ung_dung\" >H\u01b0\u1edbng d\u1eabn ch\u1ecdn theo \u1ee9ng d\u1ee5ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#He_thong_cong_nghe_F_Bduoc_yeu_cau_ve_sinh\" >H\u1ec7 th\u1ed1ng c\u00f4ng ngh\u1ec7 F&#038;B\/d\u01b0\u1ee3c, y\u00eau c\u1ea7u v\u1ec7 sinh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Nuoc_bien_RO_muoi_clorua\" >N\u01b0\u1edbc bi\u1ec3n, RO, mu\u1ed1i clorua<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Hoa_chat_dau_khi_H2S_sour_service\" >H\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed, H2S (sour service)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Hoi_condensate_lo_hoi_trao_doi_nhiet\" >H\u01a1i, condensate, l\u00f2 h\u01a1i, trao \u0111\u1ed5i nhi\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#HVAC_PCCC_cap_thoat_nuoc_cong_nghiep\" >HVAC, PCCC, c\u1ea5p tho\u00e1t n\u01b0\u1edbc c\u00f4ng nghi\u1ec7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Ket_cau_lan_can_khung_xuong_trang_tri\" >K\u1ebft c\u1ea5u, lan can, khung x\u01b0\u1edfng, trang tr\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Checklist_ky_thuat_truoc_khi_quyet_dinh\" >Checklist k\u1ef9 thu\u1eadt tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Thong_so_va_kiem_tra_chat_luong_can_yeu_cau_voi_nha_cung_cap\" >Th\u00f4ng s\u1ed1 v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u1ea7n y\u00eau c\u1ea7u v\u1edbi nh\u00e0 cung c\u1ea5p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Sai_lam_pho_bien_can_tranh\" >Sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Khuyen_nghi_lua_chon_theo_kich_ban_dien_hinh\" >Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo k\u1ecbch b\u1ea3n \u0111i\u1ec3n h\u00ecnh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Tai_lieu_tham_khao\" >T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-chon-loai-phu-hop-cho-du-an\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Noi_dung_chinh\"><\/span>N\u1ed9i dung ch\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"#toc-0-tom-tat-nhanh-nen-chon-ong-han-hay-ong-duc\">T\u00f3m t\u1eaft nhanh: n\u00ean ch\u1ecdn \u1ed1ng h\u00e0n hay \u1ed1ng \u0111\u00fac?<\/a><\/li>\n<li><a href=\"#toc-1-ong-inox-han-va-ong-inox-duc-khac-gi-ve-che-tao-va\">\u1ed0ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac: kh\u00e1c g\u00ec v\u1ec1 ch\u1ebf t\u1ea1o v\u00e0 \u0111\u1eb7c t\u00ednh?<\/a><\/li>\n<li><a href=\"#toc-2-tieu-chuan-va-pham-vi-kich-thuoc-pho-bien-tai-viet\">Ti\u00eau chu\u1ea9n v\u00e0 ph\u1ea1m vi k\u00edch th\u01b0\u1edbc ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-3-chiu-ap-chiu-nhiet-va-moi-khac-biet-thuc-te\">Ch\u1ecbu \u00e1p, ch\u1ecbu nhi\u1ec7t v\u00e0 m\u1ecfi: kh\u00e1c bi\u1ec7t th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-4-an-mon-moi-han-co-phai-la-diem-yeu\">\u0102n m\u00f2n: m\u1ed1i h\u00e0n c\u00f3 ph\u1ea3i l\u00e0 \u201c\u0111i\u1ec3m y\u1ebfu\u201d?<\/a><\/li>\n<li><a href=\"#toc-5-so-sanh-chi-phi-tien-do-va-gia-cong-hien-truong\">So s\u00e1nh chi ph\u00ed, ti\u1ebfn \u0111\u1ed9 v\u00e0 gia c\u00f4ng hi\u1ec7n tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-6-huong-dan-chon-theo-ung-dung\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-7-checklist-ky-thuat-truoc-khi-quyet-dinh\">Checklist k\u1ef9 thu\u1eadt tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh<\/a><\/li>\n<li><a href=\"#toc-8-thong-so-va-kiem-tra-chat-luong-can-yeu-cau-voi-nh\">Th\u00f4ng s\u1ed1 v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u1ea7n y\u00eau c\u1ea7u v\u1edbi nh\u00e0 cung c\u1ea5p<\/a><\/li>\n<li><a href=\"#toc-9-sai-lam-pho-bien-can-tranh\">Sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-10-khuyen-nghi-lua-chon-theo-kich-ban-dien-hinh\">Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo k\u1ecbch b\u1ea3n \u0111i\u1ec3n h\u00ecnh<\/a><\/li>\n<li><a href=\"#toc-11-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>\u1ed0ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac l\u00e0 hai l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng, k\u1ebft c\u1ea5u v\u00e0 thi\u1ebft b\u1ecb trao \u0111\u1ed5i nhi\u1ec7t. Vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n, an to\u00e0n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, ti\u1ebfn \u0111\u1ed9 v\u00e0 chi ph\u00ed d\u1ef1 \u00e1n. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o so s\u00e1nh \u0111i\u1ec3m m\u1ea1nh\u2013y\u1ebfu, ti\u00eau chu\u1ea9n, b\u00e0i to\u00e1n ch\u1ecbu \u00e1p\/nhi\u1ec7t, v\u00e0 khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo t\u1eebng k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-tom-tat-nhanh-nen-chon-ong-han-hay-ong-duc\"><span class=\"ez-toc-section\" id=\"Tom_tat_nhanh_nen_chon_ong_han_hay_ong_duc\"><\/span>T\u00f3m t\u1eaft nhanh: n\u00ean ch\u1ecdn \u1ed1ng h\u00e0n hay \u1ed1ng \u0111\u00fac?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ch\u1ecdn \u1ed1ng inox h\u00e0n khi:<br \/>\n  &#8211; \u0110\u01b0\u1eddng k\u00ednh v\u1eeba\u2013l\u1edbn, \u00e1p th\u1ea5p \u0111\u1ebfn trung b\u00ecnh, \u01b0u ti\u00ean chi ph\u00ed v\u00e0 ti\u1ebfn \u0111\u1ed9 (HVAC, n\u01b0\u1edbc s\u1ea1ch, PCCC, c\u00f4ng tr\u00ecnh d\u00e2n d\u1ee5ng, \u1ed1ng trang tr\u00ed).<br \/>\n  &#8211; \u1ee8ng d\u1ee5ng v\u1ec7 sinh ti\u00eau chu\u1ea9n (F&#038;B, d\u01b0\u1ee3c) v\u1edbi \u1ed1ng h\u00e0n chuy\u00ean d\u1ee5ng (A270\/BPE) c\u00f3 m\u00e0i b\u1ecf g\u1edd h\u00e0n, x\u1eed l\u00fd pickling\/passivation ho\u1eb7c \u0111i\u1ec7n \u0111\u00e1nh b\u00f3ng.<br \/>\n&#8211; Ch\u1ecdn \u1ed1ng inox \u0111\u00fac (seamless) khi:<br \/>\n  &#8211; \u00c1p su\u1ea5t cao\/cyclicity, s\u1ed1c nhi\u1ec7t\/c\u01a1 l\u1edbn, nhi\u1ec7t \u0111\u1ed9 cao, y\u00eau c\u1ea7u theo quy chu\u1ea9n \u00e1p l\u1ef1c nghi\u00eam ng\u1eb7t (B31.3, PED).<br \/>\n  &#8211; M\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n kh\u1eafc nghi\u1ec7t (n\u01b0\u1edbc bi\u1ec3n n\u00f3ng, clorua cao, H2S sour service), th\u00e0nh d\u00e0y, k\u00edch th\u01b0\u1edbc nh\u1ecf\u2013trung, ho\u1eb7c c\u1ea7n h\u1ec7 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n b\u1eb1ng 1.0 theo thi\u1ebft k\u1ebf.<\/p>\n<h2 id=\"toc-1-ong-inox-han-va-ong-inox-duc-khac-gi-ve-che-tao-va\"><span class=\"ez-toc-section\" id=\"Ong_inox_han_va_ong_inox_duc_khac_gi_ve_che_tao_va_dac_tinh\"><\/span>\u1ed0ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac: kh\u00e1c g\u00ec v\u1ec1 ch\u1ebf t\u1ea1o v\u00e0 \u0111\u1eb7c t\u00ednh?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Ong_inox_han_Welded_Stainless_Steel_PipeTube\"><\/span>\u1ed0ng inox h\u00e0n (Welded Stainless Steel Pipe\/Tube)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Quy tr\u00ecnh: Cu\u1ed9n b\u0103ng inox t\u1ea1o h\u00ecnh v\u00e0 h\u00e0n d\u1ecdc (ERW\/HFIW, TIG, laser), sau \u0111\u00f3 \u1ee7 gi\u1ea3i nhi\u1ec7t (solution anneal), x\u1eed l\u00fd pickling &#038; passivation. \u1ed0ng trang tr\u00ed (ASTM A554) c\u00f3 th\u1ec3 kh\u00f4ng \u1ee7.<br \/>\n&#8211; \u01afu \u0111i\u1ec3m:<br \/>\n  &#8211; Chi ph\u00ed th\u1ea5p h\u01a1n ~15\u201340% so v\u1edbi \u1ed1ng \u0111\u00fac t\u00f9y k\u00edch th\u01b0\u1edbc\/th\u00e0nh d\u00e0y.<br \/>\n  &#8211; S\u1ea3n xu\u1ea5t\/ngu\u1ed3n cung nhanh; \u0111\u1eb7c bi\u1ec7t l\u1ee3i th\u1ebf \u1edf \u0111\u01b0\u1eddng k\u00ednh l\u1edbn, th\u00e0nh m\u1ecfng\u2013trung.<br \/>\n  &#8211; B\u1ec1 m\u1eb7t ngo\u00e0i trong \u0111\u1eb9p, \u0111\u1ed3ng \u0111\u1ec1u; c\u00f3 th\u1ec3 m\u00e0i b\u1ecf g\u1edd h\u00e0n trong (ID bead removal) cho \u1ed1ng v\u1ec7 sinh.<br \/>\n&#8211; Nh\u01b0\u1ee3c \u0111i\u1ec3m:<br \/>\n  &#8211; C\u00f3 \u0111\u01b0\u1eddng h\u00e0n d\u1ecdc: l\u00e0 \u0111i\u1ec3m c\u1ea7n ki\u1ec3m so\u00e1t v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng, \u0103n m\u00f2n k\u1ebd (crevice), SCC, v\u00e0 y\u1ebfu t\u1ed1 m\u1ecfi.<br \/>\n  &#8211; M\u1ed9t s\u1ed1 quy chu\u1ea9n \u00e1p l\u1ef1c \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng h\u00e0n E < 1.0 n\u1ebfu kh\u00f4ng ki\u1ec3m tra NDE \u0111\u1ea7y \u0111\u1ee7; \u1ea3nh h\u01b0\u1edfng t\u00ednh to\u00e1n \u00e1p su\u1ea5t thi\u1ebft k\u1ebf.\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Ong_inox_duc_Seamless_Stainless_Steel_PipeTube\"><\/span>\u1ed0ng inox \u0111\u00fac (Seamless Stainless Steel Pipe\/Tube)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Quy tr\u00ecnh: \u0110\u00f9n n\u00f3ng\/\u0111\u1ee5c l\u1ed7 (piercing), c\u00e1n\/pilger, k\u00e9o ngu\u1ed9i, \u1ee7 gi\u1ea3i nhi\u1ec7t, n\u1eafn th\u1eb3ng.<br \/>\n&#8211; \u01afu \u0111i\u1ec3m:<br \/>\n  &#8211; Kh\u00f4ng c\u00f3 m\u1ed1i h\u00e0n d\u1ecdc; t\u00ednh \u0111\u1ed3ng nh\u1ea5t t\u1ed1t, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p v\u00e0 m\u1ecfi cao h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n nghi\u00eam ng\u1eb7t.<br \/>\n  &#8211; Th\u00edch h\u1ee3p th\u00e0nh d\u00e0y, k\u00edch th\u01b0\u1edbc nh\u1ecf\u2013trung; nhi\u1ec1u ti\u00eau chu\u1ea9n cho ph\u00e9p E = 1.0 m\u1eb7c \u0111\u1ecbnh.<br \/>\n&#8211; Nh\u01b0\u1ee3c \u0111i\u1ec3m:<br \/>\n  &#8211; Gi\u00e1 cao, nh\u1ea5t l\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn; th\u1eddi gian cung c\u1ea5p d\u00e0i h\u01a1n.<br \/>\n  &#8211; Sai l\u1ec7ch \u0111\u1ed9 d\u00e0y\/\u0111\u1ed9 tr\u00f2n c\u00f3 th\u1ec3 l\u1edbn h\u01a1n \u1ed1ng h\u00e0n ch\u1ea5t l\u01b0\u1ee3ng cao \u1edf m\u1ed9t s\u1ed1 c\u1ee1.<\/p>\n<h2 id=\"toc-2-tieu-chuan-va-pham-vi-kich-thuoc-pho-bien-tai-viet\"><span class=\"ez-toc-section\" id=\"Tieu_chuan_va_pham_vi_kich_thuoc_pho_bien_tai_Viet_Nam\"><\/span>Ti\u00eau chu\u1ea9n v\u00e0 ph\u1ea1m vi k\u00edch th\u01b0\u1edbc ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; ASTM A312\/A312M: \u1ed0ng inox h\u00e0n v\u00e0 \u0111\u00fac cho m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n\/nhi\u1ec7t \u0111\u1ed9 cao (grades 304\/304L, 316\/316L, 321, 310S, 317L, 2205\u2026).<br \/>\n&#8211; ASTM A269\/A249: \u1ed0ng trao \u0111\u1ed5i nhi\u1ec7t, d\u1ee5ng c\u1ee5, \u1ed1ng h\u00e0n v\u00e0 k\u00e9o ngu\u1ed9i, y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t t\u1ed1t.<br \/>\n&#8211; ASTM A270 v\u00e0 ASME BPE: \u1ed0ng v\u1ec7 sinh cho F&#038;B\/d\u01b0\u1ee3c; y\u00eau c\u1ea7u m\u00e0i b\u1ecf g\u1edd h\u00e0n, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t ID\/OD.<br \/>\n&#8211; ASTM A554: \u1ed0ng inox h\u00e0n c\u01a1 kh\u00ed\/trang tr\u00ed (lan can, n\u1ed9i\u2013ngo\u1ea1i th\u1ea5t, k\u1ebft c\u1ea5u nh\u1eb9).<br \/>\n&#8211; EN 10216-5 (\u0111\u00fac), EN 10217-7 (h\u00e0n): \u1ed0ng inox c\u00f4ng nghi\u1ec7p theo chu\u1ea9n ch\u00e2u \u00c2u.<br \/>\n&#8211; ASME B36.19M: K\u00edch th\u01b0\u1edbc \u1ed1ng inox theo SCH 5S\/10S\/40S\/80S\u2026<br \/>\n&#8211; Ph\u1ea1m vi cung c\u1ea5p th\u01b0\u1eddng g\u1eb7p:<br \/>\n  &#8211; \u1ed0ng h\u00e0n c\u00f4ng nghi\u1ec7p: OD 21.3\u2013609.6 mm (phi 21\u2013610), SCH 5S \u0111\u1ebfn 40S, c\u00f3 th\u1ec3 l\u1edbn h\u01a1n theo \u0111\u1eb7t h\u00e0ng.<br \/>\n  &#8211; \u1ed0ng \u0111\u00fac: OD 6\u2013426 mm, th\u00e0nh d\u00e0y t\u1eeb SCH 40S \u0111\u1ebfn XXS; ph\u1ed5 bi\u1ebfn \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf\u2013trung\/th\u00e0nh d\u00e0y.<\/p>\n<h2 id=\"toc-3-chiu-ap-chiu-nhiet-va-moi-khac-biet-thuc-te\"><span class=\"ez-toc-section\" id=\"Chiu_ap_chiu_nhiet_va_moi_khac_biet_thuc_te\"><\/span>Ch\u1ecbu \u00e1p, ch\u1ecbu nhi\u1ec7t v\u00e0 m\u1ecfi: kh\u00e1c bi\u1ec7t th\u1ef1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i:<br \/>\n  &#8211; C\u00f9ng m\u00e1c th\u00e9p v\u00e0 chi\u1ec1u d\u00e0y, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p l\u00fd thuy\u1ebft t\u01b0\u01a1ng \u0111\u01b0\u01a1ng; kh\u00e1c bi\u1ec7t \u0111\u1ebfn t\u1eeb h\u1ec7 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n (E) v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng x\u1eed l\u00fd sau h\u00e0n.<br \/>\n  &#8211; Theo ASME B31.3, h\u1ec7 s\u1ed1 E cho \u1ed1ng h\u00e0n d\u1ecdc c\u00f3 th\u1ec3 0.85\u20131.0 t\u00f9y ph\u01b0\u01a1ng ph\u00e1p v\u00e0 m\u1ee9c \u0111\u1ed9 ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y (NDE); \u1ed1ng \u0111\u00fac th\u01b0\u1eddng E = 1.0. \u0110i\u1ec1u n\u00e0y khi\u1ebfn \u00e1p su\u1ea5t thi\u1ebft k\u1ebf t\u00ednh to\u00e1n cho \u1ed1ng h\u00e0n c\u00f3 th\u1ec3 th\u1ea5p h\u01a1n \u0111\u1ebfn ~15% n\u1ebfu E=0.85.<br \/>\n&#8211; V\u00ed d\u1ee5 \u0111\u1ecbnh t\u00ednh:<br \/>\n  &#8211; \u1ed0ng 2&#8243; (60.3 mm) SCH 10S TP316L: n\u1ebfu d\u00f9ng d\u1eef li\u1ec7u B31.3 v\u00e0 E=0.85 cho \u1ed1ng h\u00e0n ch\u01b0a NDE \u0111\u1ea7y \u0111\u1ee7, \u00e1p thi\u1ebft k\u1ebf t\u00ednh ra s\u1ebd th\u1ea5p h\u01a1n ~15% so v\u1edbi \u1ed1ng \u0111\u00fac (E=1.0). Khi \u1ed1ng h\u00e0n \u0111\u01b0\u1ee3c NDE 100% theo y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n, E c\u00f3 th\u1ec3 =1.0 v\u00e0 kh\u00e1c bi\u1ec7t n\u00e0y tri\u1ec7t ti\u00eau.<br \/>\n&#8211; Nhi\u1ec7t \u0111\u1ed9 cao:<br \/>\n  &#8211; C\u1ea3 \u1ed1ng h\u00e0n v\u00e0 \u0111\u00fac \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o gi\u1edbi h\u1ea1n cho ph\u00e9p c\u1ee7a m\u00e1c th\u00e9p (allowable stress). \u1ede nhi\u1ec7t \u0111\u1ed9 >425\u2013450\u00b0C, c\u1ea7n t\u00ednh creep\/oxy h\u00f3a; ch\u1ecdn 310S\/321 ho\u1eb7c h\u1ee3p kim cao h\u01a1n. \u1ed0ng \u0111\u00fac th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho chu tr\u00ecnh nhi\u1ec7t kh\u1eafc nghi\u1ec7t ho\u1eb7c m\u1ecfi nhi\u1ec7t.<br \/>\n&#8211; M\u1ecfi\/c\u00fa s\u1ed1c \u00e1p:<br \/>\n  &#8211; \u1ee8ng d\u1ee5ng c\u00f3 xung \u00e1p, rung \u0111\u1ed9ng, ho\u1eb7c chu k\u1ef3 nhi\u1ec7t c\u01a1 cao: \u1ed1ng \u0111\u00fac c\u00f3 bi\u00ean \u0111\u1ed9 an to\u00e0n t\u1ed1t h\u01a1n; n\u1ebfu d\u00f9ng \u1ed1ng h\u00e0n, c\u1ea7n y\u00eau c\u1ea7u NDE \u0111\u01b0\u1eddng h\u00e0n, m\u00e0i g\u1edd v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t chu\u1ea9n.<\/p>\n<h2 id=\"toc-4-an-mon-moi-han-co-phai-la-diem-yeu\"><span class=\"ez-toc-section\" id=\"An_mon_moi_han_co_phai_la_%E2%80%9Cdiem_yeu%E2%80%9D\"><\/span>\u0102n m\u00f2n: m\u1ed1i h\u00e0n c\u00f3 ph\u1ea3i l\u00e0 \u201c\u0111i\u1ec3m y\u1ebfu\u201d?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u1ed1i h\u00e0n l\u00e0 v\u00f9ng \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t (HAZ). N\u1ebfu kh\u00f4ng \u1ee7 gi\u1ea3i nhi\u1ec7t v\u00e0 pickling\/passivation \u0111\u00fang c\u00e1ch, HAZ v\u00e0 \u0111\u01b0\u1eddng h\u00e0n c\u00f3 th\u1ec3:<br \/>\n  &#8211; Nh\u1ea1y c\u1ea3m v\u1edbi \u0103n m\u00f2n k\u1ebd v\u00e0 r\u1ed7 (pitting\/crevice) trong m\u00f4i tr\u01b0\u1eddng clorua.<br \/>\n  &#8211; C\u00f3 nguy c\u01a1 nh\u1ea1y h\u00f3a (sensitization) \u1edf th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng \u1ed5n \u0111\u1ecbnh n\u1ebfu quy tr\u00ecnh k\u00e9m.<br \/>\n&#8211; Gi\u1ea3i ph\u00e1p:<br \/>\n  &#8211; Ch\u1ec9 \u0111\u1ecbnh \u1ed1ng h\u00e0n \u0111\u00e3 \u1ee7, t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng h\u00f3a chu\u1ea9n; y\u00eau c\u1ea7u m\u00e0i b\u1ecf g\u1edd h\u00e0n trong v\u1edbi d\u1ecbch v\u1ee5 v\u1ec7 sinh.<br \/>\n  &#8211; Ch\u1ecdn m\u00e1c th\u00e9p c\u00f3 PREN cao h\u01a1n (316L, 317L, 2205) cho n\u01b0\u1edbc bi\u1ec3n\/clorua; ki\u1ec3m so\u00e1t h\u00e0m l\u01b0\u1ee3ng ferrite c\u1ee7a m\u1ed1i h\u00e0n ph\u00f9 h\u1ee3p.<br \/>\n  &#8211; V\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (n\u01b0\u1edbc bi\u1ec3n n\u00f3ng, H2S, axit m\u1ea1nh): \u01b0u ti\u00ean \u1ed1ng \u0111\u00fac ho\u1eb7c \u1ed1ng h\u00e0n ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 NDE 100% v\u00e0 quy tr\u00ecnh h\u00e0n\u2013x\u1eed l\u00fd \u0111\u01b0\u1ee3c ch\u1ee9ng minh.<\/p>\n<h2 id=\"toc-5-so-sanh-chi-phi-tien-do-va-gia-cong-hien-truong\"><span class=\"ez-toc-section\" id=\"So_sanh_chi_phi_tien_do_va_gia_cong_hien_truong\"><\/span>So s\u00e1nh chi ph\u00ed, ti\u1ebfn \u0111\u1ed9 v\u00e0 gia c\u00f4ng hi\u1ec7n tr\u01b0\u1eddng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Chi ph\u00ed:<br \/>\n  &#8211; \u1ed0ng h\u00e0n th\u01b0\u1eddng r\u1ebb h\u01a1n 15\u201340% (ch\u00eanh l\u1ec7ch t\u0103ng theo \u0111\u01b0\u1eddng k\u00ednh l\u1edbn\/th\u00e0nh m\u1ecfng). \u1ed0ng \u0111\u00fac kinh t\u1ebf h\u01a1n khi c\u1ea7n th\u00e0nh r\u1ea5t d\u00e0y \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf\u2013trung.<br \/>\n&#8211; Ti\u1ebfn \u0111\u1ed9:<br \/>\n  &#8211; \u1ed0ng h\u00e0n (A312 SCH 5S\/10S\/40S; A554) s\u1eb5n kho nhi\u1ec1u t\u1ea1i H\u00e0 N\u1ed9i. \u1ed0ng \u0111\u00fac d\u00e0y, m\u00e1c \u0111\u1eb7c bi\u1ec7t c\u00f3 th\u1ec3 c\u1ea7n \u0111\u1eb7t 3\u20138 tu\u1ea7n.<br \/>\n&#8211; Gia c\u00f4ng l\u1eafp \u0111\u1eb7t:<br \/>\n  &#8211; \u1ed0ng h\u00e0n trang tr\u00ed d\u1ec5 u\u1ed1n, \u0111\u00e1nh b\u00f3ng. H\u1ec7 th\u1ed1ng c\u00f4ng ngh\u1ec7 c\u1ea7n th\u1ee3 h\u00e0n TIG\/Orbital, v\u1eadt li\u1ec7u \u0111i k\u00e8m (que\/kim h\u00e0n, kh\u00ed tr\u01a1), v\u00e0 x\u1eed l\u00fd pickling t\u1ea1i m\u1ed1i n\u1ed1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-6-huong-dan-chon-theo-ung-dung\"><span class=\"ez-toc-section\" id=\"Huong_dan_chon_theo_ung_dung\"><\/span>H\u01b0\u1edbng d\u1eabn ch\u1ecdn theo \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"He_thong_cong_nghe_F_Bduoc_yeu_cau_ve_sinh\"><\/span>H\u1ec7 th\u1ed1ng c\u00f4ng ngh\u1ec7 F&#038;B\/d\u01b0\u1ee3c, y\u00eau c\u1ea7u v\u1ec7 sinh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; D\u00f2ng ch\u1ea3y s\u1ea1ch, \u00e1p th\u1ea5p\u2013trung (CIP\/SIP \u0111\u1ebfn ~10\u201315 barg): \u1ed1ng h\u00e0n chu\u1ea9n A270\/ASME BPE 316L, m\u00e0i b\u1ecf g\u1edd h\u00e0n, b\u1ec1 m\u1eb7t ID \u0111\u1ea1t Ra \u2264 0.8 \u03bcm (ho\u1eb7c theo BPE SF1\u2013SF4); kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i d\u00f9ng \u1ed1ng \u0111\u00fac.<br \/>\n&#8211; \u00c1p cao\/chu k\u1ef3 nhi\u1ec7t d\u00e0y \u0111\u1eb7c ho\u1eb7c y\u00eau c\u1ea7u c\u1ef1c k\u1ef3 nghi\u00eam ng\u1eb7t: c\u00e2n nh\u1eafc \u1ed1ng \u0111\u00fac ho\u1eb7c \u1ed1ng h\u00e0n BPE c\u1ea5p cao k\u00e8m NDE 100%.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nuoc_bien_RO_muoi_clorua\"><\/span>N\u01b0\u1edbc bi\u1ec3n, RO, mu\u1ed1i clorua<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; N\u01b0\u1edbc bi\u1ec3n l\u1ea1nh\u2013\u1ea5m: 316L c\u00f3 th\u1ec3 d\u00f9ng cho \u00e1p th\u1ea5p n\u1ebfu ki\u1ec3m so\u00e1t \u0103n m\u00f2n c\u1ee5c b\u1ed9 t\u1ea1i m\u1ed1i h\u00e0n; t\u1ed1t h\u01a1n ch\u1ecdn duplex 2205. H\u1ec7 th\u1ed1ng kh\u1eafc nghi\u1ec7t: \u1ed1ng \u0111\u00fac 2205\/2507 ho\u1eb7c \u1ed1ng h\u00e0n ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 ch\u1ee9ng ch\u1ec9 NDE.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hoa_chat_dau_khi_H2S_sour_service\"><\/span>H\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed, H2S (sour service)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u01afu ti\u00ean \u1ed1ng \u0111\u00fac theo y\u00eau c\u1ea7u NACE MR0175\/ISO 15156 khi ph\u00f9 h\u1ee3p; n\u1ebfu d\u00f9ng \u1ed1ng h\u00e0n ph\u1ea3i ki\u1ec3m so\u00e1t ch\u1eb7t quy tr\u00ecnh, NDE v\u00e0 v\u1eadt li\u1ec7u m\u1ed1i h\u00e0n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hoi_condensate_lo_hoi_trao_doi_nhiet\"><\/span>H\u01a1i, condensate, l\u00f2 h\u01a1i, trao \u0111\u1ed5i nhi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; H\u01a1i b\u00e3o h\u00f2a \u00e1p trung b\u00ecnh: \u1ed1ng h\u00e0n A312 SCH 40S ho\u1eb7c \u1ed1ng \u0111\u00fac \u0111\u1ec1u d\u00f9ng \u0111\u01b0\u1ee3c; ki\u1ec3m tra y\u00eau c\u1ea7u E trong thi\u1ebft k\u1ebf.<br \/>\n&#8211; Nhi\u1ec7t cao\/chu k\u1ef3 \u00e1p l\u1edbn: \u01b0u ti\u00ean \u1ed1ng \u0111\u00fac.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"HVAC_PCCC_cap_thoat_nuoc_cong_nghiep\"><\/span>HVAC, PCCC, c\u1ea5p tho\u00e1t n\u01b0\u1edbc c\u00f4ng nghi\u1ec7p<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u1ed0ng h\u00e0n l\u00e0 l\u1ef1a ch\u1ecdn kinh t\u1ebf, \u0111\u00e1p \u1ee9ng t\u1ed1t \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c th\u00f4ng d\u1ee5ng khi tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n v\u00e0 th\u1eed \u00e1p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ket_cau_lan_can_khung_xuong_trang_tri\"><\/span>K\u1ebft c\u1ea5u, lan can, khung x\u01b0\u1edfng, trang tr\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u1ed0ng h\u00e0n c\u01a1 kh\u00ed A554 (201\/304\/316) l\u00e0 ti\u00eau chu\u1ea9n; ch\u1ecdn ho\u00e0n thi\u1ec7n HL\/No.4\/BA theo nhu c\u1ea7u th\u1ea9m m\u1ef9.<\/p>\n<h2 id=\"toc-7-checklist-ky-thuat-truoc-khi-quyet-dinh\"><span class=\"ez-toc-section\" id=\"Checklist_ky_thuat_truoc_khi_quyet_dinh\"><\/span>Checklist k\u1ef9 thu\u1eadt tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c: nhi\u1ec7t \u0111\u1ed9, clorua, pH, H2S, oxy h\u00f3a.<br \/>\n&#8211; \u00c1p su\u1ea5t\/chu k\u1ef3 t\u1ea3i: c\u00f3 xung \u00e1p, rung \u0111\u1ed9ng hay kh\u00f4ng.<br \/>\n&#8211; C\u1ee1 \u1ed1ng v\u00e0 chi\u1ec1u d\u00e0y: th\u00e0nh d\u00e0y nh\u1ecf\u2013trung nghi\u00eang v\u1ec1 \u1ed1ng \u0111\u00fac; \u0111\u01b0\u1eddng k\u00ednh l\u1edbn\/th\u00e0nh m\u1ecfng nghi\u00eang v\u1ec1 \u1ed1ng h\u00e0n.<br \/>\n&#8211; Y\u00eau c\u1ea7u quy chu\u1ea9n: B31.3, PED\u2026 h\u1ec7 s\u1ed1 E, NDE b\u1eaft bu\u1ed9c.<br \/>\n&#8211; B\u1ec1 m\u1eb7t v\u00e0 v\u1ec7 sinh: Ra, lo\u1ea1i b\u1ecf g\u1edd h\u00e0n, BPE\/A270 c\u00f3 c\u1ea7n kh\u00f4ng.<br \/>\n&#8211; Ngu\u1ed3n cung\/ti\u1ebfn \u0111\u1ed9: s\u1eb5n kho hay \u0111\u1eb7t h\u00e0ng.<br \/>\n&#8211; Ng\u00e2n s\u00e1ch v\u00f2ng \u0111\u1eddi: chi ph\u00ed v\u1eadt t\u01b0 + r\u1ee7i ro \u0103n m\u00f2n\/b\u1ea3o tr\u00ec.<\/p>\n<h2 id=\"toc-8-thong-so-va-kiem-tra-chat-luong-can-yeu-cau-voi-nh\"><span class=\"ez-toc-section\" id=\"Thong_so_va_kiem_tra_chat_luong_can_yeu_cau_voi_nha_cung_cap\"><\/span>Th\u00f4ng s\u1ed1 v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u1ea7n y\u00eau c\u1ea7u v\u1edbi nh\u00e0 cung c\u1ea5p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m: ASTM\/EN t\u01b0\u01a1ng \u1ee9ng; m\u00e1c th\u00e9p, t\u00ecnh tr\u1ea1ng x\u1eed l\u00fd nhi\u1ec7t.<br \/>\n&#8211; Ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u: EN 10204 3.1 (th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh, k\u1ebft qu\u1ea3 NDE\/hydrotest).<br \/>\n&#8211; Ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y: Eddy Current\/UT 100% cho \u0111\u01b0\u1eddng h\u00e0n (\u1ee9ng d\u1ee5ng \u00e1p l\u1ef1c); Hydrotest theo ti\u00eau chu\u1ea9n.<br \/>\n&#8211; B\u1ec1 m\u1eb7t: pickling &#038; passivation; \u0111\u1ed9 nh\u00e1m ID\/OD; c\u00f3 m\u00e0i b\u1ecf g\u1edd h\u00e0n trong kh\u00f4ng (sanitary).<br \/>\n&#8211; Dung sai: OD, WT, \u0111\u1ed9 \u00f4-van, \u0111\u1ed9 th\u1eb3ng theo ASTM\/EN.<br \/>\n&#8211; Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c: heat number, traceability.<\/p>\n<h2 id=\"toc-9-sai-lam-pho-bien-can-tranh\"><span class=\"ez-toc-section\" id=\"Sai_lam_pho_bien_can_tranh\"><\/span>Sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; D\u00f9ng \u1ed1ng trang tr\u00ed A554 cho \u0111\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c\/\u0103n m\u00f2n m\u00e0 kh\u00f4ng c\u00f3 \u1ee7\u2013NDE ph\u00f9 h\u1ee3p.<br \/>\n&#8211; B\u1ecf qua x\u1eed l\u00fd pickling\/passivation v\u00e0 v\u1ec7 sinh m\u1ed1i h\u00e0n t\u1ea1i c\u00f4ng tr\u01b0\u1eddng.<br \/>\n&#8211; Kh\u00f4ng t\u00ednh \u0111\u1ebfn h\u1ec7 s\u1ed1 E trong thi\u1ebft k\u1ebf theo B31.3 d\u1eabn \u0111\u1ebfn ch\u1ecdn m\u1ecfng qu\u00e1 m\u1ee9c.<br \/>\n&#8211; Ch\u1ecdn 304L cho n\u01b0\u1edbc bi\u1ec3n\/clorua cao r\u1ed3i ph\u00e1t sinh r\u1ed7 c\u1ee5c b\u1ed9 t\u1ea1i m\u1ed1i h\u00e0n.<\/p>\n<h2 id=\"toc-10-khuyen-nghi-lua-chon-theo-kich-ban-dien-hinh\"><span class=\"ez-toc-section\" id=\"Khuyen_nghi_lua_chon_theo_kich_ban_dien_hinh\"><\/span>Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo k\u1ecbch b\u1ea3n \u0111i\u1ec3n h\u00ecnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Nh\u00e0 m\u00e1y s\u1eefa \u2013 CIP\/SIP 316L, 8 barg: \u1ed0ng h\u00e0n A270\/BPE 316L, ID bead removed, Ra \u2264 0.8 \u03bcm.<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc bi\u1ec3n 35\u2030, 40\u00b0C, b\u01a1m tu\u1ea7n ho\u00e0n: \u1ed0ng \u0111\u00fac duplex 2205 (ho\u1eb7c \u1ed1ng h\u00e0n duplex ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 NDE), m\u1eb7t b\u00edch\/gio\u0103ng t\u01b0\u01a1ng th\u00edch.<br \/>\n&#8211; H\u01a1i b\u00e3o h\u00f2a 12 barg, DN50\u2013DN150: \u1ed0ng h\u00e0n A312 TP304\/316 SCH 40S ho\u1eb7c \u1ed1ng \u0111\u00fac; x\u00e1c nh\u1eadn E v\u00e0 NDE theo thi\u1ebft k\u1ebf.<br \/>\n&#8211; Lan can ngo\u00e0i tr\u1eddi: \u1ed0ng h\u00e0n A554 304 (ho\u1eb7c 316 g\u1ea7n bi\u1ec3n), ho\u00e0n thi\u1ec7n HL\/No.4.<br \/>\n&#8211; \u1ed0ng \u0111o \u00e1p, \u0111i\u1ec1u khi\u1ec3n 1\/4&#8243;\u20131\/2&#8243;, th\u00e0nh d\u00e0y: \u1ed0ng \u0111\u00fac A269\/A213 TP316\/316L.<\/p>\n<h2 id=\"toc-11-tai-lieu-tham-khao\"><span class=\"ez-toc-section\" id=\"Tai_lieu_tham_khao\"><\/span>T\u00e0i li\u1ec7u tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; ASTM A312\/A312M \u2013 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.<br \/>\n&#8211; ASTM A269\/A249\/A270, ASME BPE \u2013 \u1ed0ng inox cho thi\u1ebft b\u1ecb trao \u0111\u1ed5i nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng v\u1ec7 sinh.<br \/>\n&#8211; ASTM A554 \u2013 Welded Stainless Steel Mechanical Tubing.<br \/>\n&#8211; EN 10216-5, EN 10217-7 \u2013 \u1ed0ng inox \u0111\u00fac\/h\u00e0n theo chu\u1ea9n ch\u00e2u \u00c2u.<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe.<br \/>\n&#8211; ASME B31.3 \u2013 Process Piping (h\u1ec7 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng h\u00e0n E v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh).<br \/>\n&#8211; Nickel Institute, Guidelines on Chloride Stress Corrosion Cracking of Stainless Steels; TWI Knowledge Summary: Seamless vs Welded Tube and Pipe.<\/p>\n<h2 id=\"toc-12-ket-luan\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u1ed0ng inox h\u00e0n t\u1ed1i \u01b0u cho \u0111a s\u1ed1 \u1ee9ng d\u1ee5ng \u0111\u01b0\u1eddng k\u00ednh v\u1eeba\u2013l\u1edbn, \u00e1p th\u1ea5p\u2013trung, y\u00eau c\u1ea7u v\u1ec7 sinh v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 v\u1edbi chi ph\u00ed\/ti\u1ebfn \u0111\u1ed9 t\u1ed1t, v\u1edbi \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n (\u1ee7, pickling, NDE khi c\u1ea7n).<br \/>\n&#8211; \u1ed0ng inox \u0111\u00fac l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n cho \u00e1p l\u1ef1c\/nhi\u1ec7t \u0111\u1ed9\/chu k\u1ef3 kh\u1eaft khe ho\u1eb7c m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n d\u1eef d\u1ed9i, k\u00edch th\u01b0\u1edbc nh\u1ecf\u2013trung\/th\u00e0nh d\u00e0y, v\u00e0 khi ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf c\u1ea7n h\u1ec7 s\u1ed1 E = 1.0.<br \/>\n&#8211; Quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng n\u00ean d\u1ef1a tr\u00ean: m\u00f4i tr\u01b0\u1eddng, \u00e1p\u2013nhi\u1ec7t, y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n, k\u00edch th\u01b0\u1edbc\u2013th\u00e0nh d\u00e0y, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi. C\u1ea7n so\u00e1t l\u1ea1i E\/NDE v\u00e0 ch\u1ee9ng ch\u1ec9 theo ASTM\/EN \u00e1p d\u1ee5ng.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n nhanh theo b\u1ea3n v\u1ebd\/thuy\u1ebft minh k\u1ef9 thu\u1eadt? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t c\u1ea5u h\u00ecnh t\u1ed1i \u01b0u v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt, ti\u00eau chu\u1ea9n, ch\u1ecbu \u00e1p, \u0103n m\u00f2n v\u00e0 chi ph\u00ed \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh \u1ed1ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac cho t\u1eebng \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p c\u1ee5 th\u1ec3.<\/p>\n","protected":false},"author":7,"featured_media":1037,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=2611"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2611\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1037"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}