{"id":1646,"date":"2026-02-07T12:34:14","date_gmt":"2026-02-07T05:34:14","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-hop-vuong-chu-nhat-quy-cach-chuan-va-ung-dung-khung\/"},"modified":"2026-02-07T12:34:14","modified_gmt":"2026-02-07T05:34:14","slug":"inox-hop-vuong-chu-nhat-quy-cach-chuan-va-ung-dung-khung","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-hop-vuong-chu-nhat-quy-cach-chuan-va-ung-dung-khung\/","title":{"rendered":"Inox h\u1ed9p vu\u00f4ng, ch\u1eef nh\u1eadt: Quy c\u00e1ch chu\u1ea9n v\u00e0 \u1ee9ng d\u1ee5ng khung"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-khai-niem-tieu-chuan-va-pham-vi-su-dung\">Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-1-quy-cach-inox-hop-vuongchu-nhat-pho-bien-tai-thi-t\">Quy c\u00e1ch inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt ph\u1ed5 bi\u1ebfn t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-2-lua-chon-mac-thep-theo-moi-truong-lam-viec\">L\u1ef1a ch\u1ecdn m\u00e1c th\u00e9p theo m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/a><\/li>\n<li><a href=\"#toc-3-tinh-chat-co-hoc-tieu-bieu-trang-thai-u-tham-khao\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc ti\u00eau bi\u1ec3u (tr\u1ea1ng th\u00e1i \u1ee7, tham kh\u1ea3o)<\/a><\/li>\n<li><a href=\"#toc-4-cong-thuc-tinh-nhanh-khoi-luong-va-tiet-dien-chiu-\">C\u00f4ng th\u1ee9c t\u00ednh nhanh kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 ti\u1ebft di\u1ec7n ch\u1ecbu u\u1ed1n<\/a><\/li>\n<li><a href=\"#toc-5-ung-dung-dien-hinh-trong-lam-khung-ket-cau\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh trong l\u00e0m khung k\u1ebft c\u1ea5u<\/a><\/li>\n<li><a href=\"#toc-6-ky-thuat-gia-cong-han-va-xu-ly-be-mat-de-khung-ben\">K\u1ef9 thu\u1eadt gia c\u00f4ng, h\u00e0n v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u0111\u1ec3 khung b\u1ec1n\u2013\u0111\u1eb9p<\/a><\/li>\n<li><a href=\"#toc-7-kiem-soat-chat-luong-khi-mua-va-nghiem-thu\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng khi mua v\u00e0 nghi\u1ec7m thu<\/a><\/li>\n<li><a href=\"#toc-8-yeu-to-anh-huong-gia-va-luu-y-dat-hang\">Y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng gi\u00e1 v\u00e0 l\u01b0u \u00fd \u0111\u1eb7t h\u00e0ng<\/a><\/li>\n<li><a href=\"#toc-9-goi-y-quy-cach-theo-ung-dung\">G\u1ee3i \u00fd quy c\u00e1ch theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-10-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Inox h\u1ed9p vu\u00f4ng v\u00e0 ch\u1eef nh\u1eadt l\u00e0 d\u00f2ng \u1ed1ng h\u1ed9p \u0111\u1ecbnh h\u00ecnh (square\/rectangular tubes) \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng nh\u1ea5t \u0111\u1ec3 l\u00e0m khung k\u1ebft c\u1ea5u nh\u1eb9\u2013trung b\u00ecnh nh\u1edd \u0111\u1ed9 b\u1ec1n, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 t\u00ednh th\u1ea9m m\u1ef9. Trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 c\u00e1c s\u1ea3n ph\u1ea9m inox (t\u1ea5m, cu\u1ed9n, \u1ed1ng, h\u1ed9p, thanh \u0111\u1eb7c), inox h\u1ed9p l\u00e0 \u201cx\u01b0\u01a1ng s\u1ed1ng\u201d cho c\u00e1c k\u1ebft c\u1ea5u khung nh\u00e0 x\u01b0\u1edfng, c\u1eeda c\u1ed5ng, gi\u00e0n m\u00e1i, khung m\u00e1y, k\u1ec7 \u2013 \u0111\u1eb7c bi\u1ec7t \u1edf nh\u1eefng \u1ee9ng d\u1ee5ng c\u1ea7n s\u1ea1ch, \u0111\u1eb9p v\u00e0 b\u1ec1n ngo\u00e0i tr\u1eddi. B\u00e0i vi\u1ebft n\u00e0y l\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 quy c\u00e1ch vu\u00f4ng\/ch\u1eef nh\u1eadt, m\u00e1c th\u00e9p, ti\u00eau chu\u1ea9n, t\u00ednh to\u00e1n nhanh ch\u1ecbu l\u1ef1c\u2013kh\u1ed1i l\u01b0\u1ee3ng, gia c\u00f4ng v\u00e0 l\u1ef1a ch\u1ecdn theo m\u00f4i tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-0-khai-niem-tieu-chuan-va-pham-vi-su-dung\">Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng<\/h2>\n<p>&#8211; C\u1ea5u t\u1ea1o: Inox h\u1ed9p \u0111\u01b0\u1ee3c t\u1ea1o h\u00ecnh t\u1eeb d\u1ea3i inox c\u00e1n ngu\u1ed9i\/c\u00e1n n\u00f3ng, h\u00e0n d\u1ecdc (welded) r\u1ed3i n\u1eafn th\u1eb3ng; ph\u1ed5 bi\u1ebfn cho k\u1ebft c\u1ea5u, n\u1ed9i\u2013ngo\u1ea1i th\u1ea5t, c\u01a1 kh\u00ed d\u00e2n d\u1ee5ng\u2013c\u00f4ng nghi\u1ec7p.<br \/>\n&#8211; Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m th\u01b0\u1eddng g\u1eb7p:<br \/>\n  &#8211; ASTM A554 (welded stainless steel mechanical tubing \u2013 trang tr\u00ed\/kh\u00f4ng \u00e1p l\u1ef1c), d\u00f9ng r\u1ed9ng r\u00e3i cho h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt.<br \/>\n  &#8211; EN 10296-2 (\u1ed1ng h\u00e0n inox cho c\u01a1 kh\u00ed) k\u1ebft h\u1ee3p EN 10088 (th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 t\u00ednh m\u00e1c th\u00e9p kh\u00f4ng g\u1ec9).<br \/>\n  &#8211; JIS G3448 (light-gauge stainless steel pipes for ordinary piping) v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n nh\u00e0 m\u00e1y.<br \/>\n&#8211; Chi\u1ec1u d\u00e0i ti\u00eau chu\u1ea9n: 6 m\/c\u00e2y; c\u00f3 c\u1eaft quy c\u00e1ch theo y\u00eau c\u1ea7u.<br \/>\n&#8211; B\u1ec1 m\u1eb7t: 2B\/BA, No.4\/HL (hairline), b\u00f3ng g\u01b0\u01a1ng 8K; th\u01b0\u1eddng ph\u1ee7 m\u00e0ng PVC b\u1ea3o v\u1ec7.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o ti\u00eau chu\u1ea9n: ASTM A554; EN 10088; EN 10296-2.<\/p>\n<h2 id=\"toc-1-quy-cach-inox-hop-vuongchu-nhat-pho-bien-tai-thi-t\">Quy c\u00e1ch inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt ph\u1ed5 bi\u1ebfn t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam<\/h2>\n<h3>K\u00edch th\u01b0\u1edbc ngo\u00e0i (OD) \u0111i\u1ec3n h\u00ecnh<\/h3>\n<p>&#8211; H\u1ed9p vu\u00f4ng (mm): 10\u00d710; 12\u00d712; 20\u00d720; 25\u00d725; 30\u00d730; 40\u00d740; 50\u00d750; 60\u00d760; 75\u00d775; 80\u00d780; 100\u00d7100.<br \/>\n&#8211; H\u1ed9p ch\u1eef nh\u1eadt (mm): 10\u00d720; 20\u00d740; 25\u00d750; 30\u00d760; 40\u00d760; 40\u00d780; 50\u00d7100; 60\u00d7120; 80\u00d7120.<br \/>\n&#8211; C\u00f3 th\u1ec3 \u0111\u1eb7t h\u00e0ng theo k\u00edch c\u1ee1 \u0111\u1eb7c bi\u1ec7t cho d\u1ef1 \u00e1n.<\/p>\n<h3>\u0110\u1ed9 d\u00e0y th\u00e0nh v\u00e0 dung sai<\/h3>\n<p>&#8211; \u0110\u1ed9 d\u00e0y (t): 0.6\u20133.0 mm (nh\u00f3m trang tr\u00ed\u2013khung nh\u1eb9); 3.0\u20136.0 mm (khung c\u00f4ng nghi\u1ec7p n\u1eb7ng h\u01a1n \u2013 t\u00f9y nh\u00e0 m\u00e1y).<br \/>\n&#8211; Dung sai tham kh\u1ea3o theo ASTM A554\/EN 10296:<br \/>\n  &#8211; K\u00edch th\u01b0\u1edbc ngo\u00e0i: \u00b10.5% (t\u1ed1i thi\u1ec3u kho\u1ea3ng \u00b10.3\u20130.5 mm t\u00f9y size).<br \/>\n  &#8211; \u0110\u1ed9 d\u00e0y: \u00b110%.<br \/>\n  &#8211; \u0110\u1ed9 vu\u00f4ng g\u00f3c, \u0111\u1ed9 th\u1eb3ng, \u0111\u1ed9 l\u01b0\u1ee3n g\u00f3c theo ti\u00eau chu\u1ea9n\/nh\u00e0 m\u00e1y; y\u00eau c\u1ea7u ch\u1eb7t ch\u1ebd h\u01a1n c\u00f3 th\u1ec3 \u0111\u1eb7t ri\u00eang cho k\u1ebft c\u1ea5u.<\/p>\n<h3>B\u1ec1 m\u1eb7t v\u00e0 b\u1ea3o v\u1ec7<\/h3>\n<p>&#8211; 2B\/BA cho khung k\u1ef9 thu\u1eadt, s\u01a1n\/ph\u1ee7 sau gia c\u00f4ng.<br \/>\n&#8211; No.4\/HL cho n\u1ed9i\u2013ngo\u1ea1i th\u1ea5t c\u1ea7n v\u00e2n x\u01b0\u1edbc \u0111\u1ed3ng \u0111\u1ec1u.<br \/>\n&#8211; 8K cho chi ti\u1ebft trang tr\u00ed cao c\u1ea5p.<br \/>\n&#8211; Ph\u1ee7 m\u00e0ng PVC m\u1ed9t\/both sides \u0111\u1ec3 ch\u1ed1ng x\u01b0\u1edbc khi gia c\u00f4ng\u2013v\u1eadn chuy\u1ec3n.<\/p>\n<h2 id=\"toc-2-lua-chon-mac-thep-theo-moi-truong-lam-viec\">L\u1ef1a ch\u1ecdn m\u00e1c th\u00e9p theo m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/h2>\n<p>&#8211; 201 (S20100): kinh t\u1ebf, \u0111\u1ed9 b\u1ec1n cao h\u01a1n 304 \u1edf tr\u1ea1ng th\u00e1i \u1ee7, ch\u1ed1ng g\u1ec9 \u1edf m\u00f4i tr\u01b0\u1eddng kh\u00f4\u2013n\u1ed9i th\u1ea5t; kh\u00f4ng khuy\u1ebfn ngh\u1ecb g\u1ea7n bi\u1ec3n\/h\u00f3a ch\u1ea5t. C\u1ea9n tr\u1ecdng khi h\u00e0n d\u00e0y l\u1edbn.<br \/>\n&#8211; 304\/304L (S30400\/S30403): c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa ch\u1ed1ng \u0103n m\u00f2n\u2013gia c\u00f4ng; ph\u00f9 h\u1ee3p \u0111a s\u1ed1 khung ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb, th\u1ef1c ph\u1ea9m, thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p s\u1ea1ch.<br \/>\n&#8211; 316\/316L (S31600\/S31603): b\u1ed5 sung Mo, ch\u1ed1ng r\u1ed7 pitting\/\u0103n m\u00f2n k\u1ebd t\u1ed1t; ch\u1ecdn cho v\u00f9ng ven bi\u1ec3n, h\u1ed3 b\u01a1i (c\u00f3 Clo), h\u00f3a ch\u1ea5t nh\u1eb9.<br \/>\n&#8211; 430 (ferritic): d\u00f9ng cho trang tr\u00ed trong nh\u00e0, \u0111\u1ed9 b\u1ec1n h\u00e0n\u2013ch\u1ed1ng g\u1ec9 k\u00e9m h\u01a1n; kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho khung k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c\u2013ngo\u00e0i tr\u1eddi.<br \/>\nG\u1ee3i \u00fd nhanh:<br \/>\n&#8211; Trong nh\u00e0 kh\u00f4, ng\u00e2n s\u00e1ch t\u1ed1i \u01b0u: 201.<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb: 304\/304L.<br \/>\n&#8211; Ven bi\u1ec3n\/h\u00f3a ch\u1ea5t nh\u1eb9: 316\/316L.<br \/>\nNgu\u1ed3n: Nickel Institute \u2013 H\u01b0\u1edbng d\u1eabn ch\u1ecdn th\u00e9p kh\u00f4ng g\u1ec9; SSINA\/Outokumpu datasheets.<\/p>\n<h2 id=\"toc-3-tinh-chat-co-hoc-tieu-bieu-trang-thai-u-tham-khao\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc ti\u00eau bi\u1ec3u (tr\u1ea1ng th\u00e1i \u1ee7, tham kh\u1ea3o)<\/h2>\n<p>&#8211; 201: Re0.2 ~ 275 MPa; Rm ~ 515\u2013680 MPa; \u0111\u1ed9 d\u00e3n d\u00e0i ~ 40%.<br \/>\n&#8211; 304\/304L: Re0.2 ~ 205 MPa; Rm ~ 515\u2013620 MPa; \u0111\u1ed9 d\u00e3n d\u00e0i ~ 40%.<br \/>\n&#8211; 316\/316L: Re0.2 ~ 205 MPa; Rm ~ 515\u2013620 MPa; \u0111\u1ed9 d\u00e3n d\u00e0i ~ 40%.<br \/>\nL\u01b0u \u00fd: \u1ed0ng\/h\u1ed9p c\u00e1n ngu\u1ed9i c\u00f3 th\u1ec3 c\u00f3 \u1ee9ng su\u1ea5t\u2013\u0111\u1ed9 b\u1ec1n t\u0103ng; thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u c\u1ea7n h\u1ec7 s\u1ed1 an to\u00e0n v\u00e0 ki\u1ec3m ch\u1ee9ng th\u1ef1c t\u1ebf. Ngu\u1ed3n: SSINA, Outokumpu, ATI\/AK Steel datasheets.<\/p>\n<h2 id=\"toc-4-cong-thuc-tinh-nhanh-khoi-luong-va-tiet-dien-chiu-\">C\u00f4ng th\u1ee9c t\u00ednh nhanh kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 ti\u1ebft di\u1ec7n ch\u1ecbu u\u1ed1n<\/h2>\n<p>&#8211; Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n (b\u1ecf qua g\u00f3c l\u01b0\u1ee3n, mm\u00b2):<br \/>\n  A = B\u00d7H \u2212 (B\u22122t)\u00d7(H\u22122t)<br \/>\n  (v\u1edbi h\u1ed9p vu\u00f4ng: B = H)<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang inox \u2248 7.93 g\/cm\u00b3 = 0.00793 kg\/mm\u00b3\u00d710\u00b3 mm\/m.<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng 1 m\u00e9t:<br \/>\n  W (kg\/m) \u2248 0.00793 \u00d7 A<br \/>\n&#8211; M\u00f4 men qu\u00e1n t\u00ednh u\u1ed1n (b\u1ecf qua g\u00f3c l\u01b0\u1ee3n):<br \/>\n  &#8211; H\u1ed9p vu\u00f4ng: I = [B\u2074 \u2212 (B\u22122t)\u2074] \/ 12<br \/>\n  &#8211; H\u1ed9p ch\u1eef nh\u1eadt (u\u1ed1n theo tr\u1ee5c m\u1ea1nh H): Ix = [B\u00d7H\u00b3 \u2212 (B\u22122t)\u00d7(H\u22122t)\u00b3] \/ 12<br \/>\n&#8211; M\u00f4 men kh\u00e1ng u\u1ed1n: Z = I \/ (H\/2)<\/p>\n<p>V\u00ed d\u1ee5 1 \u2013 t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng:<br \/>\n&#8211; H\u1ed9p 40\u00d740\u00d71.5 mm: A = 40\u00d740 \u2212 37\u00d737 = 1600 \u2212 1369 = 231 mm\u00b2<br \/>\n  \u2192 W \u2248 0.00793\u00d7231 \u2248 1.83 kg\/m.<br \/>\n&#8211; H\u1ed9p 50\u00d750\u00d71.5 mm: A = 2500 \u2212 2209 = 291 mm\u00b2<br \/>\n  \u2192 W \u2248 2.31 kg\/m.<\/p>\n<p>V\u00ed d\u1ee5 2 \u2013 so s\u00e1nh kh\u1ea3 n\u0103ng ch\u1ecbu u\u1ed1n (th\u00e9p 304, \u03c3_allow \u2248 0.6\u00b7Re0.2 \u2248 123 MPa), d\u1ea7m \u0111\u01a1n gi\u1ea3n L = 1.2 m, t\u1ea3i \u0111\u1ec1u:<br \/>\n&#8211; 40\u00d740\u00d71.5: Z \u2248 2,858 mm\u00b3 \u2192 M_allow \u2248 123\u00d72,858 \u2248 0.352 kN\u00b7m<br \/>\n  \u2192 w_allow \u2248 8\u00b7M\/L\u00b2 \u2248 1.95 kN\/m (~199 kg\/m).<br \/>\n&#8211; 50\u00d750\u00d71.5: Z \u2248 4,568 mm\u00b3 \u2192 M_allow \u2248 0.562 kN\u00b7m<br \/>\n  \u2192 w_allow \u2248 3.12 kN\/m (~318 kg\/m).<br \/>\nK\u1ebft lu\u1eadn: t\u0103ng t\u1eeb 40 l\u00ean 50 mm (gi\u1eef t) cho kh\u1ea3 n\u0103ng ch\u1ecbu u\u1ed1n t\u0103ng ~60%. L\u01b0u \u00fd: t\u00ednh \u0111\u01a1n gi\u1ea3n, ch\u01b0a x\u00e9t \u1ed5n \u0111\u1ecbnh c\u1ee5c b\u1ed9, m\u1ed1i n\u1ed1i, l\u1ed7 khoan, rung \u0111\u1ed9ng; c\u00f4ng tr\u00ecnh quan tr\u1ecdng c\u1ea7n k\u1ef9 s\u01b0 k\u1ebft c\u1ea5u th\u1ea9m tra.<\/p>\n<h2 id=\"toc-5-ung-dung-dien-hinh-trong-lam-khung-ket-cau\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh trong l\u00e0m khung k\u1ebft c\u1ea5u<\/h2>\n<p>&#8211; Khung nh\u00e0 x\u01b0\u1edfng nh\u1eb9, gi\u00e0n k\u00e8o, d\u1ea7m \u0111\u1ee1 s\u00e0n thao t\u00e1c, lan can, c\u1ea7u thang.<br \/>\n&#8211; Khung c\u1eeda c\u1ed5ng, h\u00e0ng r\u00e0o, m\u00e1i hi\u00ean, gi\u00e0n ph\u01a1i \u2013 \u01b0u ti\u00ean 304\/316 cho ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; Khung m\u00e1y, b\u1ec7 thi\u1ebft b\u1ecb, b\u0103ng t\u1ea3i, b\u00e0n thao t\u00e1c ph\u00f2ng s\u1ea1ch \u2013 304\/316 b\u1ec1 m\u1eb7t 2B\/HL.<br \/>\n&#8211; K\u1ec7 kho, khung bi\u1ec3n b\u1ea3ng qu\u1ea3ng c\u00e1o, gi\u00e0n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi (outdoor): 304\/316; l\u01b0u \u00fd \u0103n m\u00f2n k\u1ebd t\u1ea1i g\u00e1 l\u1eafp.<br \/>\n&#8211; N\u1ed9i th\u1ea5t\u2013trang tr\u00ed: 201\/304 v\u1edbi ho\u00e0n thi\u1ec7n HL\/8K theo y\u00eau c\u1ea7u th\u1ea9m m\u1ef9.<\/p>\n<h2 id=\"toc-6-ky-thuat-gia-cong-han-va-xu-ly-be-mat-de-khung-ben\">K\u1ef9 thu\u1eadt gia c\u00f4ng, h\u00e0n v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u0111\u1ec3 khung b\u1ec1n\u2013\u0111\u1eb9p<\/h2>\n<p>&#8211; C\u1eaft\u2013gia c\u00f4ng: d\u00f9ng l\u01b0\u1ee1i\/c\u01b0a\/c\u1eaft plasma ph\u00f9 h\u1ee3p inox; tr\u00e1nh nhi\u1ec5m b\u1ea9n s\u1eaft (carbon steel) \u2013 t\u00e1ch bi\u1ec7t d\u1ee5ng c\u1ee5, ch\u1ed5i, g\u00e1 k\u1eb9p.<br \/>\n&#8211; H\u00e0n:<br \/>\n  &#8211; TIG\/GTAW cho t\u1ea5m m\u1ecfng, m\u1ed1i h\u00e0n \u0111\u1eb9p; MIG\/GMAW cho n\u0103ng su\u1ea5t cao h\u01a1n; d\u00f9ng d\u00e2y \u0111i\u1ec1n L: 308L (cho 304), 316L (cho 316). 201 c\u00f3 th\u1ec3 h\u00e0n TIG\/MIG, ch\u1ecdn v\u1eadt li\u1ec7u \u0111i\u1ec1n t\u01b0\u01a1ng th\u00edch, \u01b0u ti\u00ean 308L khi c\u1ea7n ch\u1ed1ng g\u1ec9 t\u1ed1t h\u01a1n.<br \/>\n  &#8211; Ki\u1ec3m so\u00e1t nhi\u1ec7t v\u00e0o th\u1ea5p, back-purge (kh\u00ed b\u1ea3o v\u1ec7 m\u1eb7t sau) v\u1edbi \u1ed1ng k\u00edn \u0111\u1ec3 tr\u00e1nh \u201cch\u00e1y \u0111\u01b0\u1eddng h\u00e0n\u201d (sugaring).<br \/>\n&#8211; X\u1eed l\u00fd sau h\u00e0n: ng\u00e2m\/ph\u1ee7 paste t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng h\u00f3a (pickling &#038; passivation), r\u1eeda s\u1ea1ch, s\u1ea5y kh\u00f4; \u0111\u00e1nh x\u01b0\u1edbc\/\u0111\u00e1nh b\u00f3ng ph\u1ee5c h\u1ed3i b\u1ec1 m\u1eb7t No.4\/HL\/8K.<br \/>\n&#8211; Bu l\u00f4ng\u2013ph\u1ee5 ki\u1ec7n: n\u00ean ch\u1ecdn inox \u0111\u1ed3ng c\u1ea5p (304 \u0111i v\u1edbi 304; 316 v\u1edbi 316) \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; B\u1ea3o tr\u00ec: r\u1eeda \u0111\u1ecbnh k\u1ef3 b\u1eb1ng n\u01b0\u1edbc s\u1ea1ch\/x\u00e0 ph\u00f2ng trung t\u00ednh; tr\u00e1nh clo \u0111\u1eadm \u0111\u1eb7c, axit m\u1ea1nh b\u00e1m l\u00e2u tr\u00ean b\u1ec1 m\u1eb7t.<\/p>\n<h2 id=\"toc-7-kiem-soat-chat-luong-khi-mua-va-nghiem-thu\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng khi mua v\u00e0 nghi\u1ec7m thu<\/h2>\n<p>&#8211; Ch\u1ee9ng ch\u1ec9: CO\/CQ, MTC (Mill Test Certificate) th\u1ec3 hi\u1ec7n m\u00e1c, th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh theo ASTM\/EN\/JIS.<br \/>\n&#8211; Ki\u1ec3m tra nhanh:<br \/>\n  &#8211; \u0110o k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 th\u1eb3ng; ki\u1ec3m \u0111\u1ed9 vu\u00f4ng v\u00e0 m\u00e9o g\u00f3c.<br \/>\n  &#8211; Quan s\u00e1t \u0111\u01b0\u1eddng h\u00e0n: \u0111\u1ec1u, kh\u00f4ng r\u1ed7\/ch\u00e1y x\u00e9m; \u00edt bi\u00ean g\u1ed3; n\u1eafn th\u1eb3ng t\u1ed1t.<br \/>\n  &#8211; Soi b\u1ec1 m\u1eb7t: \u0111\u1ed3ng \u0111\u1ec1u, kh\u00f4ng x\u01b0\u1edbc s\u00e2u; m\u00e0ng PVC c\u00f2n nguy\u00ean.<br \/>\n  &#8211; Ki\u1ec3m tra PMI (XRF) khi c\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u00fang m\u00e1c 304\/316; test mu\u1ed1i (salt spray) kh\u00f4ng thay th\u1ebf cho x\u00e1c \u0111\u1ecbnh m\u00e1c.<br \/>\n&#8211; \u0110\u00f3ng g\u00f3i: b\u00f3 ch\u1eafc ch\u1eafn, ch\u00e8n ch\u1ed1ng va \u0111\u1eadp; l\u01b0u kho kh\u00f4 r\u00e1o, tr\u00e1nh n\u01b0\u1edbc \u0111\u1ecdng\u2013mu\u1ed1i.<\/p>\n<h2 id=\"toc-8-yeu-to-anh-huong-gia-va-luu-y-dat-hang\">Y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng gi\u00e1 v\u00e0 l\u01b0u \u00fd \u0111\u1eb7t h\u00e0ng<\/h2>\n<p>&#8211; M\u00e1c th\u00e9p (201 < 304 < 316), \u0111\u1ed9 d\u00e0y, quy c\u00e1ch, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t, nh\u00e3n m\u00e1c nh\u00e0 m\u00e1y.\n- Bi\u1ebfn \u0111\u1ed9ng gi\u00e1 Nickel\/Cr\/Mo qu\u1ed1c t\u1ebf; ngu\u1ed3n g\u1ed1c (VN\/\u0110\u00e0i Loan\/Trung Qu\u1ed1c\/ch\u00e2u \u00c2u).\n- D\u1ecbch v\u1ee5 c\u1eaft, phay \u0111\u1ea7u, khoan l\u1ed7, \u0111\u00e1nh x\u01b0\u1edbc\u2013b\u1ecdc PVC.\n- G\u1ee3i \u00fd: ch\u1ed1t r\u00f5 ti\u00eau chu\u1ea9n (ASTM A554\/EN 10296), b\u1ec1 m\u1eb7t, dung sai, c\u1ea5p h\u00e0n; y\u00eau c\u1ea7u ki\u1ec3m th\u01b0\u1edbc\u2013th\u1eb3ng; \u0111\u1eb7t d\u01b0 hao cho c\u1eaft\u2013gia c\u00f4ng.\n\n\n\n<h2 id=\"toc-9-goi-y-quy-cach-theo-ung-dung\">G\u1ee3i \u00fd quy c\u00e1ch theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>&#8211; Khung n\u1ed9i th\u1ea5t\/k\u1ec7 nh\u1eb9 trong nh\u00e0 (kh\u00f4): 201, 25\u00d725\u00d71.2\u20131.5; 20\u00d740\u00d71.2\u20131.5; b\u1ec1 m\u1eb7t HL\/No.4.<br \/>\n&#8211; C\u1eeda c\u1ed5ng\u2013lan can ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb: 304\/304L, 40\u00d740\u00d71.5\u20132.0; 40\u00d780\u00d71.5\u20132.0; b\u1ec1 m\u1eb7t No.4\/HL ho\u1eb7c s\u01a1n t\u0129nh \u0111i\u1ec7n chuy\u00ean d\u1ee5ng cho inox.<br \/>\n&#8211; Gi\u00e0n m\u00e1i, bi\u1ec3n b\u1ea3ng, khung m\u00e1y v\u1eeba: 304, 50\u00d750\u00d71.5\u20132.5; 50\u00d7100\u00d72.0\u20133.0; h\u00e0n TIG\/MIG, passivation sau h\u00e0n.<br \/>\n&#8211; Ven bi\u1ec3n\/h\u00f3a ch\u1ea5t nh\u1eb9\/nh\u00e0 m\u00e1y th\u1ef1c ph\u1ea9m: 316L, ch\u1ecdn \u0111\u1ed9 d\u00e0y 2.0\u20133.0; ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng c\u1ea5p; b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3.<\/p>\n<h2 id=\"toc-10-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A554 \u2013 Standard Specification for Welded Stainless Steel Mechanical Tubing (astm.org)<br \/>\n&#8211; EN 10088 \u2013 Stainless steels: List of stainless steels and mechanical properties (cen.eu \/ national standards bodies)<br \/>\n&#8211; EN 10296-2 \u2013 Welded circular steel tubes for mechanical and general engineering purposes \u2013 Stainless steels<br \/>\n&#8211; SSINA \u2013 Stainless Steel Grade Data (ssina.com)<br \/>\n&#8211; Outokumpu \u2013 Core 304\/316 datasheets (outokumpu.com)<br \/>\n&#8211; ATI\/AK Steel \u2013 Type 201\/304\/316 Stainless Steel Datasheets (atimetals.com \/ aksteel.com)<\/p>\n<h2 id=\"toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; Inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho khung k\u1ebft c\u1ea5u nh\u1eb9\u2013trung b\u00ecnh nh\u1edd \u0111\u1ed9 b\u1ec1n, ch\u1ed1ng \u0103n m\u00f2n, thi c\u00f4ng nhanh v\u00e0 t\u00ednh th\u1ea9m m\u1ef9.<br \/>\n&#8211; Quy c\u00e1ch ph\u1ed5 bi\u1ebfn tr\u1ea3i t\u1eeb 10\u00d710 \u0111\u1ebfn 100\u00d7100 v\u00e0 10\u00d720 \u0111\u1ebfn 80\u00d7120 mm, \u0111\u1ed9 d\u00e0y 0.6\u20136.0 mm; ch\u1ecdn theo t\u1ea3i, nh\u1ecbp, y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t.<br \/>\n&#8211; M\u00e1c 201 ph\u00f9 h\u1ee3p trong nh\u00e0; 304 cho \u0111a s\u1ed1 \u1ee9ng d\u1ee5ng ngo\u00e0i tr\u1eddi; 316\/316L cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (ven bi\u1ec3n, clo, h\u00f3a ch\u1ea5t).<br \/>\n&#8211; H\u00e3y thi\u1ebft k\u1ebf c\u00f3 c\u01a1 s\u1edf: d\u00f9ng c\u00f4ng th\u1ee9c t\u00ednh nhanh Z, W \u0111\u1ec3 so s\u00e1nh, nh\u01b0ng c\u00f4ng tr\u00ecnh quan tr\u1ecdng c\u1ea7n k\u1ef9 s\u01b0 th\u1ea9m tra v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n.<br \/>\n&#8211; Thi c\u00f4ng chu\u1ea9n: h\u00e0n TIG\/MIG \u0111\u00fang v\u1eadt li\u1ec7u \u0111i\u1ec1n, back-purge, passivation; tr\u00e1nh nhi\u1ec5m b\u1ea9n s\u1eaft; ch\u1ecdn ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng c\u1ea5p.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ch\u1ee9ng ch\u1ec9 gi\u00fap c\u00f4ng tr\u00ecnh b\u1ec1n\u2013\u0111\u1eb9p, ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn quy c\u00e1ch, m\u00e1c th\u00e9p v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u2013 Hotline: 0343.417.281 \u2013 Email: inoxcongnghiep.cuongthinh@gmail.com.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ed5ng h\u1ee3p quy c\u00e1ch inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt: k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 d\u00e0y, m\u00e1c 201\/304\/316, dung sai, c\u00f4ng th\u1ee9c t\u00ednh t\u1ea3i &#038; kh\u1ed1i l\u01b0\u1ee3ng, \u1ee9ng d\u1ee5ng khung.<\/p>\n","protected":false},"author":7,"featured_media":1008,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1646","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\/1646","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=1646"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1646\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1008"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}