{"id":2104,"date":"2026-06-05T12:33:44","date_gmt":"2026-06-05T05:33:44","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-tieu-chi-chon-dung-cho-du-an-2\/"},"modified":"2026-06-05T12:33:44","modified_gmt":"2026-06-05T05:33:44","slug":"ong-inox-han-hay-ong-inox-duc-tieu-chi-chon-dung-cho-du-an-2","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-ong-inox-duc-tieu-chi-chon-dung-cho-du-an-2\/","title":{"rendered":"\u1ed0ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac: ti\u00eau ch\u00ed ch\u1ecdn \u0111\u00fang cho d\u1ef1 \u00e1n"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-tom-tat-nhanh-nen-chon-ong-inox-han-hay-ong-inox-d\">T\u00f3m t\u1eaft nhanh: N\u00ean ch\u1ecdn \u1ed1ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac?<\/a><\/li>\n<li><a href=\"#toc-1-ong-inox-han-khai-niem-tieu-chuan-dac-tinh\">\u1ed0ng inox h\u00e0n: Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n, \u0111\u1eb7c t\u00ednh<\/a><\/li>\n<li><a href=\"#toc-2-ong-inox-duc-seamlesslien-mach-khai-niem-tieu-chua\">\u1ed0ng inox \u0111\u00fac (seamless\/li\u1ec1n m\u1ea1ch): Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n, \u0111\u1eb7c t\u00ednh<\/a><\/li>\n<li><a href=\"#toc-3-so-sanh-ky-thuat-cot-loi\">So s\u00e1nh k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i<\/a><\/li>\n<li><a href=\"#toc-4-kha-nang-chiu-ap-vi-du-tinh-nhanh-bang-cong-thuc-b\">Kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p: v\u00ed d\u1ee5 t\u00ednh nhanh b\u1eb1ng c\u00f4ng th\u1ee9c Barlow<\/a><\/li>\n<li><a href=\"#toc-5-an-mon-va-tuoi-tho\">\u0102n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd<\/a><\/li>\n<li><a href=\"#toc-6-kich-co-quy-cach-pho-bien-tai-viet-nam\">K\u00edch c\u1ee1, quy c\u00e1ch ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-7-chi-phi-va-tong-chi-phi-so-huu-tco\">Chi ph\u00ed v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO)<\/a><\/li>\n<li><a href=\"#toc-8-checklist-quyet-dinh-nhanh\">Checklist quy\u1ebft \u0111\u1ecbnh nhanh<\/a><\/li>\n<li><a href=\"#toc-9-tinh-huong-ung-dung-dien-hinh\">T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/a><\/li>\n<li><a href=\"#toc-10-lap-dat-va-gia-cong-khuyen-nghi-thuc-te\">L\u1eafp \u0111\u1eb7t v\u00e0 gia c\u00f4ng: khuy\u1ebfn ngh\u1ecb th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-11-nguon-tham-khao\">Ngu\u1ed3n 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 (seamless\/li\u1ec1n m\u1ea1ch) l\u00e0 hai nh\u00f3m ch\u1ee7 l\u1ef1c trong m\u1ecdi d\u1ef1 \u00e1n \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 k\u1ebft c\u1ea5u inox. B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p ti\u00eau chu\u1ea9n, \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt, gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t, ch\u1ed1ng \u0103n m\u00f2n, chi ph\u00ed v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh \u0111\u1ec3 b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i ngay t\u1eeb \u0111\u1ea7u, gi\u1ea3m r\u1ee7i ro v\u00e0 t\u1ed1i \u01b0u t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t m\u1ea3nh gh\u00e9p quan tr\u1ecdng trong c\u1ea9m nang v\u1ec1 \u1ed1ng v\u00e0 h\u1ed9p inox (ph\u00e2n lo\u1ea1i, ti\u00eau chu\u1ea9n, \u1ee9ng d\u1ee5ng) nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y \u0111\u00e3 \u0111\u1ee7 \u0111\u1ed9c l\u1eadp \u0111\u1ec3 b\u1ea1n ra quy\u1ebft \u0111\u1ecbnh.<\/p>\n<h2 id=\"toc-0-tom-tat-nhanh-nen-chon-ong-inox-han-hay-ong-inox-d\">T\u00f3m t\u1eaft nhanh: N\u00ean ch\u1ecdn \u1ed1ng inox h\u00e0n hay \u1ed1ng inox \u0111\u00fac?<\/h2>\n<p>&#8211; Ch\u1ecdn \u1ed1ng inox h\u00e0n khi:<br \/>\n  &#8211; \u00c1p su\u1ea5t trung b\u00ecnh\u2013th\u1ea5p (\u2264 40\u201370 bar v\u1edbi \u1ed1ng theo SCH ph\u00f9 h\u1ee3p), nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng qu\u00e1 cao.<br \/>\n  &#8211; \u0110\u01b0\u1eddng k\u00ednh v\u1eeba\u2013l\u1edbn (DN \u2265 100) c\u1ea7n t\u1ed1i \u01b0u chi ph\u00ed; y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t \u0111\u1eb9p, trang tr\u00ed\/ki\u1ebfn tr\u00fac; \u1ed1ng c\u01a1 kh\u00ed (ASTM A554).<br \/>\n  &#8211; H\u1ec7 th\u1ed1ng th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c, bia r\u01b0\u1ee3u v\u1edbi \u1ed1ng h\u00e0n v\u1ec7 sinh, h\u00e0n TIG\/laser, m\u00e0i bead, passivation \u0111\u00fang quy tr\u00ecnh (ASTM A269\/A270).<br \/>\n&#8211; Ch\u1ecdn \u1ed1ng inox \u0111\u00fac (seamless) khi:<br \/>\n  &#8211; \u00c1p su\u1ea5t cao, xung \u0111\u1ed9ng\/chu k\u1ef3 m\u1ecfi, nhi\u1ec7t \u0111\u1ed9 cao; \u0111\u01b0\u1eddng \u1ed1ng h\u01a1i, d\u1ea7u kh\u00ed, h\u00f3a ch\u1ea5t kh\u1eafc nghi\u1ec7t.<br \/>\n  &#8211; \u0110\u01b0\u1eddng k\u00ednh nh\u1ecf\u2013trung b\u00ecnh (DN \u2264 100) c\u1ea7n \u0111\u1ed9 d\u00e0y l\u1edbn, \u0111\u1ed9 tin c\u1eady cao, ki\u1ec3m tra NDT nghi\u00eam ng\u1eb7t.<br \/>\n  &#8211; L\u1eafp \u0111\u1eb7t t\u1ea1i v\u1ecb tr\u00ed kh\u00f3 ki\u1ec3m so\u00e1t m\u1ed1i h\u00e0n ho\u1eb7c y\u00eau c\u1ea7u kh\u00f4ng c\u00f3 \u0111\u01b0\u1eddng h\u00e0n v\u00ec an to\u00e0n\/quy chu\u1ea9n.<\/p>\n<h2 id=\"toc-1-ong-inox-han-khai-niem-tieu-chuan-dac-tinh\">\u1ed0ng inox h\u00e0n: Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n, \u0111\u1eb7c t\u00ednh<\/h2>\n<p>&#8211; Quy tr\u00ecnh:<br \/>\n  &#8211; T\u1ea1o \u1ed1ng t\u1eeb d\u1ea3i inox (coil\/plate) b\u1eb1ng h\u00e0n TIG\/laser\/ERW d\u1ecdc ho\u1eb7c xo\u1eafn; c\u00f3\/kh\u00f4ng m\u00e0i ph\u1eb3ng \u0111\u01b0\u1eddng h\u00e0n; x\u1eed l\u00fd pickling\u2013passivation; c\u00f3 th\u1ec3 \u1ee7 dung d\u1ecbch (solution anneal).<br \/>\n&#8211; Ti\u00eau chu\u1ea9n th\u00f4ng d\u1ee5ng:<br \/>\n  &#8211; ASTM A312 (austenitic seamless\/welded cho d\u1ecbch v\u1ee5 \u00e1p l\u1ef1c), ASTM A358 (welded c\u1ee1 l\u1edbn), ASTM A269 (\u1ed1ng h\u00e0n\/li\u1ec1n m\u1ea1ch cho d\u1ecbch v\u1ee5 t\u1ed5ng h\u1ee3p), ASTM A270 (sanitary), ASTM A554 (\u1ed1ng c\u01a1 kh\u00ed\/trang tr\u00ed).<br \/>\n  &#8211; EN 10217-7 (welded stainless), JIS G3459\/G3463 (JP).<br \/>\n  &#8211; K\u00edch c\u1ee1 theo ASME B36.19M (sch 5S\/10S\/40S\/80S) ho\u1eb7c ISO 1127 (OD x WT).<br \/>\n&#8211; \u01afu \u0111i\u1ec3m:<br \/>\n  &#8211; Gi\u00e1 t\u1ed1t h\u01a1n 10\u201335% so v\u1edbi seamless c\u00f9ng quy c\u00e1ch (\u0111\u1eb7c bi\u1ec7t DN \u2265 100).<br \/>\n  &#8211; \u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u OD, \u0111\u1ed9 ph\u1eb3ng b\u1ec1 m\u1eb7t cao; d\u1ec5 ki\u1ebfm h\u00e0ng d\u00e0i 6\u201312 m; \u0111a d\u1ea1ng b\u1ec1 m\u1eb7t (2B, BA, hairline, No.4).<br \/>\n&#8211; H\u1ea1n ch\u1ebf:<br \/>\n  &#8211; T\u1ed3n t\u1ea1i v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t (HAZ) v\u00e0 \u0111\u01b0\u1eddng h\u00e0n \u2013 c\u1ea7n quy tr\u00ecnh h\u00e0n, t\u1ea9y g\u1ec9, th\u1ee5 \u0111\u1ed9ng h\u00f3a chu\u1ea9n \u0111\u1ec3 ch\u1ed1ng \u0103n m\u00f2n k\u1ebd\/nh\u1ea1y c\u1ea3m h\u00f3a.<br \/>\n  &#8211; \u1ede d\u1ecbch v\u1ee5 r\u1ea5t cao \u00e1p ho\u1eb7c m\u1ecfi cao, \u0111\u1ed9 tin c\u1eady th\u01b0\u1eddng k\u00e9m seamless.<\/p>\n<h3>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a \u1ed1ng inox h\u00e0n<\/h3>\n<p>&#8211; \u0110\u01b0\u1eddng \u1ed1ng c\u00f4ng ngh\u1ec7 \u00e1p su\u1ea5t v\u1eeba\/th\u1ea5p (CIP\/SIP ng\u00e0nh th\u1ef1c ph\u1ea9m \u2013 d\u00f9ng ASTM A270).<br \/>\n&#8211; HVAC, PCCC, h\u1ec7 th\u1ed1ng n\u01b0\u1edbc RO\/DI, \u0111\u01b0\u1eddng \u1ed1ng nh\u00e0 m\u00e1y d\u01b0\u1ee3c\u2013\u0111\u1ed3 u\u1ed1ng.<br \/>\n&#8211; K\u1ebft c\u1ea5u, lan can, khung m\u00e1y, \u1ed1ng trang tr\u00ed (ASTM A554).<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng h\u00f3a ch\u1ea5t \u0103n m\u00f2n nh\u1eb9\u2013trung b\u00ecnh (ch\u1ecdn m\u00e1c 316L\/2205 khi c\u00f3 Cl-).<\/p>\n<h2 id=\"toc-2-ong-inox-duc-seamlesslien-mach-khai-niem-tieu-chua\">\u1ed0ng inox \u0111\u00fac (seamless\/li\u1ec1n m\u1ea1ch): Kh\u00e1i ni\u1ec7m, ti\u00eau chu\u1ea9n, \u0111\u1eb7c t\u00ednh<\/h2>\n<p>&#8211; Quy tr\u00ecnh:<br \/>\n  &#8211; \u0110\u00f9n\/nhi\u1ec7t khoan ph\u00f4i \u0111\u1eb7c th\u00e0nh \u1ed1ng, sau \u0111\u00f3 c\u00e1n\/ngu\u1ed9i (cold-worked) \u0111\u1ea1t k\u00edch th\u01b0\u1edbc; kh\u00f4ng c\u00f3 \u0111\u01b0\u1eddng h\u00e0n.<br \/>\n&#8211; Ti\u00eau chu\u1ea9n th\u00f4ng d\u1ee5ng:<br \/>\n  &#8211; ASTM A312 (seamless), ASTM A269, EN 10216-5 (seamless stainless), JIS G3459\/G3463.<br \/>\n&#8211; \u01afu \u0111i\u1ec3m:<br \/>\n  &#8211; Ch\u1ecbu \u00e1p\u2013nhi\u1ec7t\u2013m\u1ecfi t\u1ed1t h\u01a1n, \u0111\u1ed9 tin c\u1eady cao t\u1ea1i \u0111i\u1ec3m m\u1ecfi\/dao \u0111\u1ed9ng.<br \/>\n  &#8211; Ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, chu k\u1ef3 nhi\u1ec7t cao, h\u1ec7 th\u1ed1ng an to\u00e0n quan tr\u1ecdng.<br \/>\n&#8211; H\u1ea1n ch\u1ebf:<br \/>\n  &#8211; Gi\u00e1 cao h\u01a1n; v\u1edbi DN l\u1edbn, chi ph\u00ed v\u00e0 th\u1eddi gian giao h\u00e0ng t\u0103ng m\u1ea1nh.<br \/>\n  &#8211; Dung sai b\u1ec1 m\u1eb7t\/OD \u0111\u00f4i khi k\u00e9m \u0111\u1eb9p h\u01a1n \u1ed1ng h\u00e0n \u0111\u00e1nh b\u00f3ng s\u1eb5n (v\u1edbi \u1ee9ng d\u1ee5ng trang tr\u00ed).<\/p>\n<h3>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a \u1ed1ng inox \u0111\u00fac<\/h3>\n<p>&#8211; H\u01a1i b\u00e3o h\u00f2a\/nhi\u1ec7t d\u1ea7u, h\u00f3a ch\u1ea5t \u00e1p l\u1ef1c cao, d\u1ea7u kh\u00ed, n\u1ed3i h\u01a1i, trao \u0111\u1ed5i nhi\u1ec7t.<br \/>\n&#8211; H\u1ec7 th\u1ed1ng c\u00f3 xung \u00e1p, rung \u0111\u1ed9ng l\u1edbn, nhi\u1ec7t \u0111\u1ed9 cao, y\u00eau c\u1ea7u kh\u1eaft khe theo ASME B31.3.<\/p>\n<h2 id=\"toc-3-so-sanh-ky-thuat-cot-loi\">So s\u00e1nh k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i<\/h2>\n<p>&#8211; V\u1eadt li\u1ec7u\/m\u00e1c th\u00e9p ph\u1ed5 bi\u1ebfn:<br \/>\n  &#8211; 304\/304L: t\u1ed5ng qu\u00e1t; 316\/316L: ch\u1ecbu clorua\/pitting t\u1ed1t h\u01a1n; 321\/347: ch\u1ecbu nhi\u1ec7t; 310S: nhi\u1ec7t cao; Duplex 2205: b\u1ec1n cao, ch\u1ed1ng \u0103n m\u00f2n r\u1ed7\u2013k\u1ebd t\u1ed1t.<br \/>\n&#8211; C\u01a1 t\u00ednh (tham kh\u1ea3o): gi\u1edbi h\u1ea1n ch\u1ea3y 170\u2013205 MPa; b\u1ec1n k\u00e9o 485\u2013620 MPa t\u00f9y m\u00e1c\/\u0111i\u1ec1u ki\u1ec7n; cho ph\u00e9p thi\u1ebft k\u1ebf theo ASME B31.3.<br \/>\n&#8211; Dung sai:<br \/>\n  &#8211; Theo ASTM A312\/A999: chi\u1ec1u d\u00e0y th\u00e0nh t\u1ed1i thi\u1ec3u -12.5%; OD\/\u0111\u1ed9 th\u1eb3ng theo b\u1ea3ng ti\u00eau chu\u1ea9n. ISO 1127 c\u00f3 c\u00e1c c\u1ea5p D\/T ri\u00eang.<br \/>\n&#8211; B\u1ec1 m\u1eb7t:<br \/>\n  &#8211; C\u00f4ng nghi\u1ec7p: No.1, 2B; trang tr\u00ed\/c\u01a1 kh\u00ed: BA, No.4, HL (ASTM A554); v\u1ec7 sinh: Ra \u2264 0.8 \u03bcm (ASTM A270 t\u00f9y c\u1ea5p).<br \/>\n&#8211; Ki\u1ec3m tra (QA\/QC):<br \/>\n  &#8211; Hydrotest 100% l\u00f4; NDT: eddy current\/UT cho \u0111\u01b0\u1eddng h\u00e0n; RT (X-ray) v\u1edbi \u1ed1ng h\u00e0n y\u00eau c\u1ea7u cao (ASTM A358).<br \/>\n  &#8211; PMI, ch\u1ee9ng ch\u1ec9 MTC 3.1 (EN 10204), passivation theo ASTM A380\/A967.<\/p>\n<h2 id=\"toc-4-kha-nang-chiu-ap-vi-du-tinh-nhanh-bang-cong-thuc-b\">Kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p: v\u00ed d\u1ee5 t\u00ednh nhanh b\u1eb1ng c\u00f4ng th\u1ee9c Barlow<\/h2>\n<p>&#8211; C\u00f4ng th\u1ee9c x\u1ea5p x\u1ec9 (th\u00e0nh m\u1ecfng): P \u2248 2 \u00d7 S \u00d7 t \/ (D \u2212 t)<br \/>\n  &#8211; P: \u00e1p su\u1ea5t cho ph\u00e9p (MPa), S: \u1ee9ng su\u1ea5t cho ph\u00e9p (MPa) theo v\u1eadt li\u1ec7u\/nhi\u1ec7t \u0111\u1ed9, t: chi\u1ec1u d\u00e0y (mm), D: \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i (mm).<br \/>\n&#8211; V\u00ed d\u1ee5 1 (NPS 2 \u2013 DN50, 304L, 100\u00b0C):<br \/>\n  &#8211; OD D = 60.3 mm; SCH 40S \u2192 t = 3.91 mm (ASME B36.19M); S \u2248 138 MPa (ASME B31.3).<br \/>\n  &#8211; P \u2248 2\u00d7138\u00d73.91\/(60.3\u22123.91) \u2248 19.1 MPa \u2248 191 bar.<br \/>\n  &#8211; K\u1ebft lu\u1eadn: v\u1edbi 10\u201320 bar, c\u1ea3 \u1ed1ng h\u00e0n \u0111\u1ea1t chu\u1ea9n A312 v\u00e0 \u1ed1ng seamless \u0111\u1ec1u d\u01b0 an to\u00e0n n\u1ebfu h\u00e0n\/QA \u0111\u00fang.<br \/>\n&#8211; V\u00ed d\u1ee5 2 (NPS 4 \u2013 DN100, 316L, 100\u00b0C):<br \/>\n  &#8211; OD D = 114.3 mm; SCH 10S \u2192 t = 3.05 mm; S \u2248 129 MPa.<br \/>\n  &#8211; P \u2248 2\u00d7129\u00d73.05\/(114.3\u22123.05) \u2248 7.1 MPa \u2248 71 bar.<br \/>\n  &#8211; K\u1ebft lu\u1eadn: \u1ed1ng h\u00e0n A312 SCH 10S v\u1eabn \u0111\u00e1p \u1ee9ng t\u1ed1t ph\u1ea7n l\u1edbn h\u1ec7 th\u1ed1ng n\u01b0\u1edbc\/quy tr\u00ecnh \u00e1p th\u1ea5p\u2013trung b\u00ecnh.<br \/>\n&#8211; L\u01b0u \u00fd:<br \/>\n  &#8211; Thi\u1ebft k\u1ebf th\u1ef1c t\u1ebf ph\u1ea3i ki\u1ec3m tra theo ti\u00eau chu\u1ea9n \u0111\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c (ASME B31.3\/B31.1), h\u1ec7 s\u1ed1 m\u1ed1i h\u00e0n, h\u1ec7 s\u1ed1 \u0103n m\u00f2n, nhi\u1ec7t \u0111\u1ed9, t\u1ea3i tr\u1ecdng ngo\u00e0i.<\/p>\n<h2 id=\"toc-5-an-mon-va-tuoi-tho\">\u0102n m\u00f2n v\u00e0 tu\u1ed5i th\u1ecd<\/h2>\n<p>&#8211; V\u00f9ng \u0111\u01b0\u1eddng h\u00e0n c\u1ee7a \u1ed1ng h\u00e0n c\u00f3 nguy c\u01a1 nh\u1ea1y c\u1ea3m h\u00f3a\/\u0103n m\u00f2n k\u1ebd n\u1ebfu:<br \/>\n  &#8211; D\u00f9ng m\u00e1c kh\u00f4ng \u201cL\u201d (C cao), kh\u00f4ng \u1ee7 dung d\u1ecbch, kh\u00f4ng pickling &#038; passivation tri\u1ec7t \u0111\u1ec3.<br \/>\n&#8211; Bi\u1ec7n ph\u00e1p:<br \/>\n  &#8211; \u01afu ti\u00ean 304L\/316L cho h\u00e0n; y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p m\u00e0i bead, pickling\u2013passivation, ki\u1ec3m tra ferrite, purge kh\u00ed tr\u01a1 khi h\u00e0n l\u1eafp \u0111\u1eb7t.<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng clorua cao, n\u01b0\u1edbc bi\u1ec3n, h\u00f3a ch\u1ea5t oxy h\u00f3a:<br \/>\n  &#8211; Ch\u1ecdn 316L ho\u1eb7c Duplex 2205; 304\/201 cho trang tr\u00ed kh\u00f4 r\u00e1o, tr\u00e1nh ngo\u00e0i tr\u1eddi ven bi\u1ec3n.<\/p>\n<h2 id=\"toc-6-kich-co-quy-cach-pho-bien-tai-viet-nam\">K\u00edch c\u1ee1, quy c\u00e1ch ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>&#8211; K\u00edch th\u01b0\u1edbc:<br \/>\n  &#8211; OD 6\u2013630 mm; \u0111\u1ed9 d\u00e0y 0.5\u201312 mm; chi\u1ec1u d\u00e0i ti\u00eau chu\u1ea9n 6\u20136.1 m, theo y\u00eau c\u1ea7u c\u00f3 th\u1ec3 12 m.<br \/>\n&#8211; H\u1ec7 k\u00edch c\u1ee1:<br \/>\n  &#8211; ASME B36.19M: Sch 5S\/10S\/40S\/80S (nhi\u1ec1u h\u00e0ng s\u1eb5n kho t\u1eeb DN15 \u0111\u1ebfn DN300).<br \/>\n  &#8211; ISO 1127\/ODxWT cho \u1ed1ng c\u01a1 kh\u00ed\/trang tr\u00ed (ASTM A554) v\u00e0 \u1ed1ng v\u1ec7 sinh (ASTM A269\/A270).<br \/>\n&#8211; B\u1ec1 m\u1eb7t s\u1eb5n c\u00f3: No.1, 2B, BA, Hairline, No.4; trong n\u01b0\u1edbc ch\u1ee7 y\u1ebfu h\u00e0ng nh\u1eadp Trung Qu\u1ed1c, \u0110\u00e0i Loan, Indonesia; \u1ed1ng seamless ph\u1ed5 bi\u1ebfn \u0111\u1ebfn DN100.<\/p>\n<h2 id=\"toc-7-chi-phi-va-tong-chi-phi-so-huu-tco\">Chi ph\u00ed v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO)<\/h2>\n<p>&#8211; \u1ed0ng h\u00e0n: r\u1ebb h\u01a1n 10\u201335%, leadtime ng\u1eafn, b\u1ec1 m\u1eb7t \u0111\u1eb9p; chi ph\u00ed gia c\u00f4ng\/l\u1eafp \u0111\u1eb7t th\u01b0\u1eddng th\u1ea5p h\u01a1n.<br \/>\n&#8211; \u1ed0ng seamless: gi\u00e1 cao h\u01a1n, nh\u01b0ng ti\u1ebft ki\u1ec7m r\u1ee7i ro \u1edf \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t (cao \u00e1p, nhi\u1ec7t, m\u1ecfi).<br \/>\n&#8211; TCO ph\u1ee5 thu\u1ed9c:<br \/>\n  &#8211; \u0110i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, chi ph\u00ed ng\u1eebng m\u00e1y do r\u00f2 r\u1ec9, y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9\/validation (\u0111\u1eb7c bi\u1ec7t th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c), th\u1eddi gian giao h\u00e0ng.<\/p>\n<h2 id=\"toc-8-checklist-quyet-dinh-nhanh\">Checklist quy\u1ebft \u0111\u1ecbnh nhanh<\/h2>\n<p>&#8211; \u00c1p su\u1ea5t l\u00e0m vi\u1ec7c:<br \/>\n  &#8211; \u2264 40\u201370 bar: \u01b0u ti\u00ean \u1ed1ng h\u00e0n theo SCH ph\u00f9 h\u1ee3p; > 70\u2013100+ bar ho\u1eb7c c\u00f3 xung \u0111\u1ed9ng: c\u00e2n nh\u1eafc seamless.<br \/>\n&#8211; Nhi\u1ec7t \u0111\u1ed9:<br \/>\n  &#8211; \u2264 250\u00b0C: \u1ed1ng h\u00e0n A312 th\u01b0\u1eddng \u0111\u1ee7; > 250\u2013550\u00b0C: \u01b0u ti\u00ean seamless\/m\u00e1c ch\u1ecbu nhi\u1ec7t (321\/347\/310S).<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng:<br \/>\n  &#8211; Cl- cao\/h\u00f3a ch\u1ea5t m\u1ea1nh: 316L\/2205; y\u00eau c\u1ea7u v\u1ec7 sinh: A269\/A270, b\u1ec1 m\u1eb7t trong m\u1ecbn, m\u1ed1i h\u00e0n m\u00e0i\/\u0111\u00e1nh b\u00f3ng, passivation.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc:<br \/>\n  &#8211; DN \u2265 100: \u1ed1ng h\u00e0n kinh t\u1ebf h\u01a1n; DN \u2264 100, \u00e1p cao: seamless hi\u1ec7u qu\u1ea3 h\u01a1n.<br \/>\n&#8211; Ch\u1ee9ng ch\u1ec9 &#038; QA:<br \/>\n  &#8211; Y\u00eau c\u1ea7u MTC 3.1, hydrotest, NDT, PMI; v\u1edbi \u1ed1ng h\u00e0n quan tr\u1ecdng, y\u00eau c\u1ea7u RT\/X-ray m\u1ed1i h\u00e0n (\u0111\u1eb7c bi\u1ec7t A358).<\/p>\n<h2 id=\"toc-9-tinh-huong-ung-dung-dien-hinh\">T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/h2>\n<p>&#8211; H\u01a1i b\u00e3o h\u00f2a 8\u201312 bar, 180\u00b0C, DN50:<br \/>\n  &#8211; \u1ed0ng h\u00e0n A312 304L\/316L SCH 40S \u0111\u00e1p \u1ee9ng; n\u1ebfu rung \u0111\u1ed9ng m\u1ea1nh\/c\u00fa s\u1ed1c \u00e1p: c\u00e2n nh\u1eafc seamless.<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng CIP ng\u00e0nh \u0111\u1ed3 u\u1ed1ng, DN65:<br \/>\n  &#8211; \u1ed0ng h\u00e0n v\u1ec7 sinh ASTM A270 316L, m\u00e0i bead trong, Ra \u2264 0.8 \u03bcm, h\u00e0n TIG v\u1edbi back purge.<br \/>\n&#8211; H\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c\/kh\u00ed n\u00e9n \u00e1p cao, DN20:<br \/>\n  &#8211; \u1ed0ng seamless A312 316L SCH 80S, fittings forged; ki\u1ec3m tra \u00e1p l\u1ef1c v\u00e0 NDT.<br \/>\n&#8211; Lan can\/khung m\u00e1y ngo\u00e0i tr\u1eddi n\u1ed9i \u0111\u00f4:<br \/>\n  &#8211; \u1ed0ng h\u00e0n c\u01a1 kh\u00ed ASTM A554 304\/201, b\u1ec1 m\u1eb7t HL\/No.4; ven bi\u1ec3n ch\u1ecdn 316.<\/p>\n<h2 id=\"toc-10-lap-dat-va-gia-cong-khuyen-nghi-thuc-te\">L\u1eafp \u0111\u1eb7t v\u00e0 gia c\u00f4ng: khuy\u1ebfn ngh\u1ecb th\u1ef1c t\u1ebf<\/h2>\n<p>&#8211; H\u00e0n l\u1eafp: d\u00f9ng kh\u00ed b\u1ea3o v\u1ec7 hai ph\u00eda (back purge) v\u1edbi \u1ed1ng quy tr\u00ecnh; tr\u00e1nh \u0111\u01b0\u1eddng h\u00e0n b\u1ecb oxy h\u00f3a \u0111en.<br \/>\n&#8211; X\u1eed l\u00fd sau h\u00e0n: pickling\u2013passivation (ASTM A380\/A967); r\u1eeda s\u1ea1ch clorua.<br \/>\n&#8211; U\u1ed1n ngu\u1ed9i: b\u00e1n k\u00ednh t\u1ed1i thi\u1ec3u 2\u20133D (t\u00f9y ph\u01b0\u01a1ng ph\u00e1p\/\u1ed1ng); d\u00f9ng mandrel cho \u1ed1ng m\u1ecfng.<br \/>\n&#8211; Gh\u00e9p n\u1ed1i: ch\u1ecdn ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9 ti\u00eau chu\u1ea9n (ASME B16.9\/B16.11, clamp sanitary ISO\/ASME BPE).<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A312\/A312M: Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.<br \/>\n&#8211; ASTM A269, ASTM A270 (Sanitary), ASTM A554 (Mechanical Tubing), ASTM A380\/A967 (L\u00e0m s\u1ea1ch\/Passivation).<br \/>\n&#8211; ASME B36.19M: Stainless Steel Pipe; ASME B31.3: Process Piping (\u1ee9ng su\u1ea5t cho ph\u00e9p).<br \/>\n&#8211; EN 10216-5 (Seamless stainless), EN 10217-7 (Welded stainless), EN 10204 (MTC 3.1).<br \/>\n&#8211; ISO 1127: Stainless steel tubes \u2013 Dimensions, tolerances.<br \/>\n&#8211; JIS G3459\/G3463: Stainless steel pipes for corrosive\/high-temperature service.<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; \u1ed0ng inox h\u00e0n ph\u00f9 h\u1ee3p \u0111a s\u1ed1 \u1ee9ng d\u1ee5ng \u00e1p su\u1ea5t v\u1eeba\u2013th\u1ea5p, k\u00edch th\u01b0\u1edbc l\u1edbn, y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t \u0111\u1eb9p v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed. V\u1edbi quy tr\u00ecnh h\u00e0n\u2013passivation \u0111\u00fang, \u0111\u1ed9 b\u1ec1n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n \u0111\u00e1p \u1ee9ng t\u1ed1t ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p.<br \/>\n&#8211; \u1ed0ng inox \u0111\u00fac (seamless) l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n cho \u00e1p su\u1ea5t\/nhi\u1ec7t \u0111\u1ed9\/xung \u0111\u1ed9ng cao, m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng tr\u1ecdng y\u1ebfu.<br \/>\n&#8211; Quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng n\u00ean d\u1ef1a tr\u00ean: \u00e1p su\u1ea5t\u2013nhi\u1ec7t \u0111\u1ed9, m\u00f4i tr\u01b0\u1eddng, k\u00edch th\u01b0\u1edbc, y\u00eau c\u1ea7u v\u1ec7 sinh\/ch\u1ee9ng ch\u1ec9 v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu. C\u1ea7n t\u00ednh theo chu\u1ea9n (ASME B31.3), ch\u1ecdn m\u00e1c th\u00e9p ph\u00f9 h\u1ee3p (304L\/316L\/321\/2205), v\u00e0 y\u00eau c\u1ea7u QA\/NDT r\u00f5 r\u00e0ng trong h\u1ee3p \u0111\u1ed3ng.<\/p>\n<p>Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn, b\u00e1o gi\u00e1 t\u1ed1t v\u00e0 s\u1eb5n h\u00e0ng t\u1ea1i H\u00e0 N\u1ed9i.<br \/>\nHotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh \u1ed1ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac: ti\u00eau chu\u1ea9n, \u0111\u1ed9 b\u1ec1n, \u00e1p su\u1ea5t, ch\u1ed1ng \u0103n m\u00f2n, chi ph\u00ed v\u00e0 \u1ee9ng d\u1ee5ng. K\u00e8m b\u1ea3ng ch\u1ecdn nhanh theo \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p>\n","protected":false},"author":7,"featured_media":1064,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2104","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\/2104","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=2104"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2104\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1064"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}