{"id":1897,"date":"2026-04-13T00:34:13","date_gmt":"2026-04-12T17:34:13","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/tieu-chuan-bat-buoc-cho-ong-inox-cong-nghiep-astm-a312-a270\/"},"modified":"2026-04-13T00:34:13","modified_gmt":"2026-04-12T17:34:13","slug":"tieu-chuan-bat-buoc-cho-ong-inox-cong-nghiep-astm-a312-a270","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/tieu-chuan-bat-buoc-cho-ong-inox-cong-nghiep-astm-a312-a270\/","title":{"rendered":"Ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c cho \u1ed1ng inox c\u00f4ng nghi\u1ec7p: ASTM A312, A270"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-vi-sao-tieu-chuan-ong-inox-quan-trong\">V\u00ec sao ti\u00eau chu\u1ea9n \u1ed1ng inox quan tr\u1ecdng?<\/a><\/li>\n<li><a href=\"#toc-1-he-tieu-chuan-chinh-dung-cho-ong-inox\">H\u1ec7 ti\u00eau chu\u1ea9n ch\u00ednh d\u00f9ng cho \u1ed1ng inox<\/a><\/li>\n<li><a href=\"#toc-2-chi-tiet-cac-tieu-chuan-astm-quan-trong-cho-ong-in\">Chi ti\u1ebft c\u00e1c ti\u00eau chu\u1ea9n ASTM quan tr\u1ecdng cho \u1ed1ng inox<\/a><\/li>\n<li><a href=\"#toc-3-chon-tieu-chuan-nao-cho-tung-ung-dung\">Ch\u1ecdn ti\u00eau chu\u1ea9n n\u00e0o cho t\u1eebng \u1ee9ng d\u1ee5ng?<\/a><\/li>\n<li><a href=\"#toc-4-cac-yeu-cau-ky-thuat-then-chot-can-nam\">C\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt then ch\u1ed1t c\u1ea7n n\u1eafm<\/a><\/li>\n<li><a href=\"#toc-5-tuong-duong-va-quy-doi-voi-jiseniso\">T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 quy \u0111\u1ed5i v\u1edbi JIS\/EN\/ISO<\/a><\/li>\n<li><a href=\"#toc-6-chung-tu-chat-luong-va-truy-xuat-khi-mua-ong-inox\">Ch\u1ee9ng t\u1eeb ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 truy xu\u1ea5t khi mua \u1ed1ng inox<\/a><\/li>\n<li><a href=\"#toc-7-vi-du-chon-ong-nha-may-sua-duong-ong-cipsip\">V\u00ed d\u1ee5 ch\u1ecdn \u1ed1ng \u2013 Nh\u00e0 m\u00e1y s\u1eefa (\u0111\u01b0\u1eddng \u1ed1ng CIP\/SIP)<\/a><\/li>\n<li><a href=\"#toc-8-loi-pho-bien-khi-dat-hang-va-cach-tranh\">L\u1ed7i ph\u1ed5 bi\u1ebfn khi \u0111\u1eb7t h\u00e0ng v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-9-checklist-thong-tin-toi-thieu-khi-dat-hang\">Checklist th\u00f4ng tin t\u1ed1i thi\u1ec3u khi \u0111\u1eb7t h\u00e0ng<\/a><\/li>\n<li><a href=\"#toc-10-luu-kho-va-xu-ly\">L\u01b0u kho v\u00e0 x\u1eed l\u00fd<\/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 c\u00f4ng nghi\u1ec7p ph\u1ea3i tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n, ch\u1ed1ng \u0103n m\u00f2n, an to\u00e0n v\u1eadn h\u00e0nh v\u00e0 kh\u1ea3 n\u0103ng nghi\u1ec7m thu. B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p chi ti\u1ebft c\u00e1c ti\u00eau chu\u1ea9n quan tr\u1ecdng nh\u1ea5t cho \u1ed1ng inox (\u0111\u1eb7c bi\u1ec7t ASTM A312, A270\u2026) v\u00e0 c\u00e1ch ch\u1ecdn \u0111\u00fang theo t\u1eebng \u1ee9ng d\u1ee5ng. \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ea3nh gh\u00e9p thi\u1ebft y\u1ebfu trong h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n v\u00e0 ch\u1ee9ng nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng inox (ASTM, JIS, CO\/CQ), nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp v\u00e0 \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n ra quy\u1ebft \u0111\u1ecbnh mua h\u00e0ng.<\/p>\n<h2 id=\"toc-0-vi-sao-tieu-chuan-ong-inox-quan-trong\">V\u00ec sao ti\u00eau chu\u1ea9n \u1ed1ng inox quan tr\u1ecdng?<\/h2>\n<p>&#8211; \u0110\u1ea3m b\u1ea3o t\u00ednh n\u0103ng: \u0111\u1ed9 b\u1ec1n k\u00e9o\/ch\u1ea3y, \u0111\u1ed9 d\u00e0y th\u1ef1c, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p\/ nhi\u1ec7t, ch\u1ed1ng \u0103n m\u00f2n.<br \/>\n&#8211; T\u00ednh \u0111\u1ed3ng nh\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng l\u1eafp l\u1eabn: k\u00edch th\u01b0\u1edbc theo ASME B36.19M, dung sai, \u0111\u1ea7u n\u1ed1i.<br \/>\n&#8211; An to\u00e0n \u2013 tu\u00e2n th\u1ee7 ph\u00e1p l\u00fd: \u0111\u00e1p \u1ee9ng ASME B31.3\/B31.1, ti\u00eau chu\u1ea9n v\u1ec7 sinh cho th\u1ef1c ph\u1ea9m\/d\u01b0\u1ee3c.<br \/>\n&#8211; D\u1ec5 nghi\u1ec7m thu: c\u00f3 MTC 3.1, CO\/CQ, d\u1ea5u ki\u1ec3m so\u00e1t nhi\u1ec7t luy\u1ec7n v\u00e0 truy xu\u1ea5t Heat No.<\/p>\n<h2 id=\"toc-1-he-tieu-chuan-chinh-dung-cho-ong-inox\">H\u1ec7 ti\u00eau chu\u1ea9n ch\u00ednh d\u00f9ng cho \u1ed1ng inox<\/h2>\n<p>&#8211; ASTM\/ASME (Hoa K\u1ef3): chi ph\u1ed1i ph\u1ed5 bi\u1ebfn nh\u1ea5t t\u1ea1i VN cho \u1ed1ng ch\u1ecbu \u00e1p v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng c\u00f4ng ngh\u1ec7.<br \/>\n&#8211; JIS (Nh\u1eadt): th\u00f4ng d\u1ee5ng trong d\u1ef1 \u00e1n Nh\u1eadt, nh\u00e0 m\u00e1y FDI (v\u00ed d\u1ee5 JIS G3459).<br \/>\n&#8211; EN\/ISO (Ch\u00e2u \u00c2u): EN 10216-5 (\u1ed1ng inox \u0111\u00fac li\u1ec1n), EN 10217-7 (\u1ed1ng inox h\u00e0n); ISO 2037 (\u1ed1ng v\u1ec7 sinh).<br \/>\n&#8211; Ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc: ASME B36.19M (\u1ed1ng inox, schedule 5S\/10S\/40S\/80S).<br \/>\n&#8211; Ti\u00eau chu\u1ea9n b\u1ec1 m\u1eb7t\/vi sinh: ASME BPE (thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7 sinh h\u1ecdc \u2013 d\u01b0\u1ee3c).<\/p>\n<h2 id=\"toc-2-chi-tiet-cac-tieu-chuan-astm-quan-trong-cho-ong-in\">Chi ti\u1ebft c\u00e1c ti\u00eau chu\u1ea9n ASTM quan tr\u1ecdng cho \u1ed1ng inox<\/h2>\n<h3>ASTM A312\/A312M \u2013 \u1ed0ng inox austenitic ch\u1ecbu \u00e1p, nhi\u1ec7t, \u0103n m\u00f2n<\/h3>\n<p>&#8211; Ph\u1ea1m vi: \u1ed0ng inox austenitic li\u1ec1n m\u1ea1ch (SMLS) v\u00e0 h\u00e0n (WLD) cho d\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u0103n m\u00f2n n\u00f3i chung.<br \/>\n&#8211; M\u00e1c th\u00e9p ph\u1ed5 bi\u1ebfn: TP304\/304L, TP316\/316L, TP321, TP347, TP310S; c\u00f3 th\u1ec3 c\u00f3 si\u00eau austenitic ho\u1eb7c duplex theo \u0111\u1eb7t h\u00e0ng.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc: theo ASME B36.19M (OD inch), c\u00e1c schedule S (5S, 10S, 40S, 80S\u2026).<br \/>\n&#8211; X\u1eed l\u00fd nhi\u1ec7t: \u1ed0ng h\u00e0n ph\u1ea3i \u1ee7 dung d\u1ecbch (solution anneal), tr\u1eeb khi \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh kh\u00e1c v\u00e0 th\u1ecfa m\u00e3n th\u1eed nghi\u1ec7m.<br \/>\n&#8211; Th\u1eed nghi\u1ec7m: th\u1ee7y l\u1ef1c ho\u1eb7c NDT, th\u1eed b\u1eb9t\/b\u00e0nh, ki\u1ec3m th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, c\u01a1 t\u00ednh. Y\u00eau c\u1ea7u chung tham chi\u1ebfu ASTM A999.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: \u0111\u01b0\u1eddng \u1ed1ng c\u00f4ng ngh\u1ec7 h\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed, h\u01a1i b\u00e3o h\u00f2a, h\u1ec7 Piping B31.3.<\/p>\n<h3>ASTM A270\/A270M \u2013 \u1ed0ng inox v\u1ec7 sinh (sanitary) cho s\u1eefa, th\u1ef1c ph\u1ea9m, \u0111\u1ed3 u\u1ed1ng<\/h3>\n<p>&#8211; Ph\u1ea1m vi: \u1ed0ng inox austenitic v\u1ec7 sinh, y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 s\u1ea1ch v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t trong\/ngo\u00e0i.<br \/>\n&#8211; M\u00e1c: 304\/304L, 316\/316L l\u00e0 ch\u1ee7 \u0111\u1ea1o (\u01b0u ti\u00ean 316L \u0111\u1ec3 ch\u1ed1ng pitting trong m\u00f4i tr\u01b0\u1eddng Cl-).<br \/>\n&#8211; B\u1ec1 m\u1eb7t: y\u00eau c\u1ea7u \u0111\u1ed9 nh\u1eb5n b\u1ec1 m\u1eb7t (Ra) v\u00e0 t\u00ecnh tr\u1ea1ng m\u1ed1i h\u00e0n trong l\u00f2ng \u1ed1ng theo \u0111\u1eb7t h\u00e0ng; c\u00f3 th\u1ec3 \u0111\u00e1nh b\u00f3ng c\u01a1 h\u1ecdc, \u1ee7 s\u00e1ng (BA) ho\u1eb7c \u0111i\u1ec7n h\u00f3a (EP).<br \/>\n&#8211; Ki\u1ec3m so\u00e1t vi sinh: y\u00eau c\u1ea7u t\u1ea9y r\u1eeda \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A380\/A967 v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t b\u1ea9n.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: \u0111\u01b0\u1eddng \u1ed1ng CIP\/SIP, s\u1eefa \u2013 bia \u2013 \u0111\u1ed3 u\u1ed1ng; th\u01b0\u1eddng k\u1ebft h\u1ee3p y\u00eau c\u1ea7u ASME BPE cho d\u01b0\u1ee3c.<\/p>\n<h3>ASTM A269\/A269M \u2013 \u1ed0ng\/tube inox austenitic d\u1ecbch v\u1ee5 chung<\/h3>\n<p>&#8211; Ph\u1ea1m vi: Tube inox austenitic li\u1ec1n m\u1ea1ch ho\u1eb7c h\u00e0n cho d\u1ecbch v\u1ee5 chung, dung sai ch\u1eb7t h\u01a1n A312, \u0111\u01b0\u1eddng k\u00ednh th\u01b0\u1eddng nh\u1ecf (OD ki\u1ec3u tube).<br \/>\n&#8211; Ki\u1ec3m tra: NDT b\u1eaft bu\u1ed9c (eddy-current ho\u1eb7c si\u00eau \u00e2m) ho\u1eb7c th\u1eed th\u1ee7y l\u1ef1c; y\u00eau c\u1ea7u chung theo ASTM A1016.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: kh\u00ed c\u1ee5, h\u1ec7 \u0111o l\u01b0\u1eddng, instrumentation, coil.<\/p>\n<h3>ASTM A213\/A213M \u2013 \u1ed0ng\/tube inox li\u1ec1n m\u1ea1ch cho n\u1ed3i h\u01a1i, qu\u00e1 nhi\u1ec7t, trao \u0111\u1ed5i nhi\u1ec7t<\/h3>\n<p>&#8211; Ph\u1ea1m vi: Tube li\u1ec1n m\u1ea1ch inox austenitic v\u00e0 th\u00e9p ferritic cho n\u1ed3i h\u01a1i\/superheater\/heat-exchanger.<br \/>\n&#8211; Y\u00eau c\u1ea7u c\u01a1 t\u00ednh v\u00e0 h\u1ea1t tinh cao, ki\u1ec3m tra nghi\u00eam ng\u1eb7t theo ASTM A1016.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: \u1ed1ng l\u00f2 h\u01a1i, b\u1ed9 qu\u00e1 nhi\u1ec7t, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n<h3>ASTM A249\/A249M \u2013 \u1ed0ng\/tube inox h\u00e0n cho n\u1ed3i h\u01a1i v\u00e0 trao \u0111\u1ed5i nhi\u1ec7t<\/h3>\n<p>&#8211; Ph\u1ea1m vi: Tube austenitic h\u00e0n, \u00e9p n\u1eafn m\u1ed1i h\u00e0n (bead-worked), \u1ee7 dung d\u1ecbch; d\u00e0nh cho b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, b\u00ecnh ng\u01b0ng.<br \/>\n&#8211; Dung sai ch\u1eb7t, kh\u1ea3 n\u0103ng gi\u00e3n n\u1edf\/gi\u00e3n n\u1edf nhi\u1ec7t t\u1ed1t.<\/p>\n<h3>ASTM A358\/A358M \u2013 \u1ed0ng inox h\u00e0n EFW th\u00e0nh d\u00e0y, nhi\u1ec7t \u0111\u1ed9\/\u0103n m\u00f2n kh\u1eafc nghi\u1ec7t<\/h3>\n<p>&#8211; Ph\u1ea1m vi: \u1ed0ng austenitic h\u00e0n b\u1eb1ng EFW, nhi\u1ec1u Category (as-welded, welded &#038; annealed, y\u00eau c\u1ea7u ch\u1ee5p \u1ea3nh m\u1ed1i h\u00e0n RT).<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: d\u1ecbch v\u1ee5 \u0103n m\u00f2n cao, th\u00e0nh d\u00e0y, \u0111\u01b0\u1eddng k\u00ednh l\u1edbn.<\/p>\n<h3>ASTM A778 \u2013 \u1ed0ng inox austenitic h\u00e0n kh\u00f4ng \u1ee7 cho d\u1ecbch v\u1ee5 \u0103n m\u00f2n nh\u1eb9, \u00e1p th\u1ea5p<\/h3>\n<p>&#8211; Ph\u1ea1m vi: \u1ed0ng h\u00e0n kh\u00f4ng qua \u1ee7 cu\u1ed1i; chi ph\u00ed th\u1ea5p h\u01a1n A312.<br \/>\n&#8211; L\u01b0u \u00fd: Kh\u00f4ng d\u00f9ng cho nhi\u1ec7t\/\u00e1p su\u1ea5t cao; ch\u1ec9 khi ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n<h3>ASTM A554 \u2013 \u1ed0ng inox c\u01a1 kh\u00ed\/trang tr\u00ed (kh\u00f4ng d\u00f9ng cho ch\u1ecbu \u00e1p)<\/h3>\n<p>&#8211; Ph\u1ea1m vi: \u1ed0ng c\u01a1 kh\u00ed\/ki\u1ebfn tr\u00fac, \u0111\u1ed9 b\u00f3ng ngo\u1ea1i quan, dung sai kh\u00e1c A312.<br \/>\n&#8211; C\u1ea3nh b\u00e1o: Kh\u00f4ng thay th\u1ebf cho A312 trong h\u1ec7 piping ch\u1ecbu \u00e1p.<\/p>\n<h2 id=\"toc-3-chon-tieu-chuan-nao-cho-tung-ung-dung\">Ch\u1ecdn ti\u00eau chu\u1ea9n n\u00e0o cho t\u1eebng \u1ee9ng d\u1ee5ng?<\/h2>\n<p>&#8211; \u0110\u01b0\u1eddng \u1ed1ng c\u00f4ng ngh\u1ec7 ch\u1ecbu \u00e1p, h\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed: ASTM A312 (k\u00edch th\u01b0\u1edbc theo ASME B36.19M).<br \/>\n&#8211; H\u1ec7 th\u1ed1ng s\u1eefa \u2013 bia \u2013 \u0111\u1ed3 u\u1ed1ng \u2013 d\u01b0\u1ee3c: ASTM A270; n\u1ebfu d\u01b0\u1ee3c ph\u1ea9m, tham chi\u1ebfu th\u00eam ASME BPE v\u1ec1 b\u1ec1 m\u1eb7t (Ra) v\u00e0 h\u00e0n qu\u1ef9 \u0111\u1ea1o.<br \/>\n&#8211; N\u1ed3i h\u01a1i, qu\u00e1 nhi\u1ec7t, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t: ASTM A213 (li\u1ec1n m\u1ea1ch) ho\u1eb7c A249 (h\u00e0n) t\u00f9y thi\u1ebft k\u1ebf.<br \/>\n&#8211; D\u1ee5ng c\u1ee5 \u0111o, kh\u00ed n\u00e9n s\u1ea1ch, instrumentation: ASTM A269.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng th\u00e0nh d\u00e0y, \u0103n m\u00f2n\/nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t, DN l\u1edbn: ASTM A358.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng \u00e1p th\u1ea5p\/\u0103n m\u00f2n nh\u1eb9, t\u1ed1i \u01b0u chi ph\u00ed: ASTM A778 (\u0111\u00e1nh gi\u00e1 r\u1ee7i ro k\u1ef9).<br \/>\n&#8211; \u1ee8ng d\u1ee5ng c\u01a1 kh\u00ed\/trang tr\u00ed, kh\u00f4ng \u00e1p: ASTM A554.<\/p>\n<h2 id=\"toc-4-cac-yeu-cau-ky-thuat-then-chot-can-nam\">C\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt then ch\u1ed1t c\u1ea7n n\u1eafm<\/h2>\n<h3>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 m\u00e1c th\u00e9p<\/h3>\n<p>&#8211; 304\/304L: \u0111a d\u1ee5ng; 304L c\u00f3 C th\u1ea5p, ch\u1ed1ng \u0103n m\u00f2n tinh gi\u1edbi t\u1ed1t sau h\u00e0n.<br \/>\n&#8211; 316\/316L: b\u1ed5 sung Mo, ch\u1ed1ng pitting\/crevice trong m\u00f4i tr\u01b0\u1eddng Cl-.<br \/>\n&#8211; 321\/347: \u1ed5n \u0111\u1ecbnh h\u00f3a Ti\/Nb cho nhi\u1ec7t \u0111\u1ed9 cao.<br \/>\n&#8211; Duplex (2205\u2026) ho\u1eb7c si\u00eau austenitic (904L\u2026): m\u00f4i tr\u01b0\u1eddng Cl- cao, H2S\/Cl- kh\u1eafc nghi\u1ec7t.<br \/>\n&#8211; Ki\u1ec3m tra PMI\/chemscan v\u1edbi d\u1ef1 \u00e1n quan tr\u1ecdng; y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 nhi\u1ec7t luy\u1ec7n.<\/p>\n<h3>C\u01a1 t\u00ednh (tham chi\u1ebfu ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3)<\/h3>\n<p>&#8211; V\u00ed d\u1ee5 tham kh\u1ea3o: v\u1edbi 304L\/316L theo A312, b\u1ec1n k\u00e9o min kho\u1ea3ng 485 MPa, ch\u1ea3y min kho\u1ea3ng 170 MPa (gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c xem b\u1ea3n ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh).<br \/>\n&#8211; Tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa \u1ed1ng h\u00e0n\/\u0111\u00fac li\u1ec1n v\u1ec1 \u0111\u1ed9 dai va \u0111\u1eadp v\u00e0 v\u00f9ng HAZ.<\/p>\n<h3>K\u00edch th\u01b0\u1edbc, schedule, dung sai<\/h3>\n<p>&#8211; K\u00edch th\u01b0\u1edbc \u1ed1ng inox theo ASME B36.19M (OD danh ngh\u0129a inch; Schedule 5S\/10S\/40S\/80S\u2026).<br \/>\n&#8211; Dung sai: A312 dung sai ti\u00eau chu\u1ea9n; A269\/A270 th\u01b0\u1eddng ch\u1eb7t h\u01a1n v\u1edbi tube nh\u1ecf v\u00e0 \u1ed1ng v\u1ec7 sinh.<br \/>\n&#8211; \u0110\u1eb7t h\u00e0ng ph\u1ea3i n\u00eau r\u00f5: OD, WT (ho\u1eb7c Schedule), chi\u1ec1u d\u00e0i (R\/L, D\/L), chu\u1ea9n \u0111\u1ea7u \u1ed1ng (plain end\/beveled), v\u00e0 ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc.<\/p>\n<h3>X\u1eed l\u00fd nhi\u1ec7t<\/h3>\n<p>&#8211; A312\/A358\/A249 y\u00eau c\u1ea7u \u1ee7 dung d\u1ecbch sau h\u00e0n; A778 l\u00e0 ngo\u1ea1i l\u1ec7 (kh\u00f4ng \u1ee7).<br \/>\n&#8211; \u1ee6 \u0111\u00fang d\u1ea3i nhi\u1ec7t \u0111\u1ed9 cho m\u00e1c austenitic \u0111\u1ec3 h\u00f2a tan carbide, \u0111\u1ea3m b\u1ea3o \u0103n m\u00f2n v\u00e0 c\u01a1 t\u00ednh.<\/p>\n<h3>Th\u1eed nghi\u1ec7m v\u00e0 ki\u1ec3m tra<\/h3>\n<p>&#8211; Th\u1eed th\u1ee7y l\u1ef1c ho\u1eb7c NDT (eddy current\/si\u00eau \u00e2m) theo y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n.<br \/>\n&#8211; Th\u1eed b\u1eb9t\/b\u00e0nh, u\u1ed1n, \u0111\u1ed9 b\u1ec1n k\u00e9o; ch\u1ee5p \u1ea3nh m\u1ed1i h\u00e0n (RT) v\u1edbi A358 Category c\u00f3 quy \u0111\u1ecbnh.<br \/>\n&#8211; Ki\u1ec3m tra \u0103n m\u00f2n tinh gi\u1edbi (ASTM A262) khi c\u00f3 y\u00eau c\u1ea7u d\u1ef1 \u00e1n.<br \/>\n&#8211; V\u1ec7 sinh \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a: ASTM A380\/A967 \u0111\u1ed1i v\u1edbi \u1ed1ng v\u1ec7 sinh.<\/p>\n<h2 id=\"toc-5-tuong-duong-va-quy-doi-voi-jiseniso\">T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 quy \u0111\u1ed5i v\u1edbi JIS\/EN\/ISO<\/h2>\n<p>&#8211; JIS G3459: \u1ed0ng inox cho \u0111\u01b0\u1eddng \u1ed1ng th\u00f4ng d\u1ee5ng, ph\u1ea1m vi t\u01b0\u01a1ng t\u1ef1 ASTM A312 (kh\u00f4ng ho\u00e0n to\u00e0n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 1-1).<br \/>\n&#8211; JIS G3448: \u1ed0ng inox m\u1ecfng cho c\u1ea5p n\u01b0\u1edbc\/sinh ho\u1ea1t.<br \/>\n&#8211; EN 10216-5: \u1ed0ng inox li\u1ec1n m\u1ea1ch; EN 10217-7: \u1ed0ng inox h\u00e0n cho m\u1ee5c \u0111\u00edch ch\u1ecbu \u00e1p.<br \/>\n&#8211; ISO 2037: \u1ed0ng inox cho ng\u00e0nh s\u1eefa \u2013 v\u1ec7 sinh (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ee5c ti\u00eau v\u1edbi A270).<br \/>\nL\u01b0u \u00fd: ti\u00eau chu\u1ea9n kh\u00e1c nhau v\u1ec1 dung sai, th\u1eed nghi\u1ec7m, k\u00fd hi\u1ec7u; lu\u00f4n \u0111\u1ed1i chi\u1ebfu b\u1ea3n ti\u00eau chu\u1ea9n \u0111\u1ec3 thay th\u1ebf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h2 id=\"toc-6-chung-tu-chat-luong-va-truy-xuat-khi-mua-ong-inox\">Ch\u1ee9ng t\u1eeb ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 truy xu\u1ea5t khi mua \u1ed1ng inox<\/h2>\n<p>&#8211; MTC 3.1 (EN 10204): ch\u1ee9ng ch\u1ec9 nh\u00e0 m\u00e1y th\u1ec3 hi\u1ec7n Heat No., ph\u00e2n t\u00edch h\u00f3a h\u1ecdc, c\u01a1 t\u00ednh, k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m.<br \/>\n&#8211; CO\/CQ: gi\u1ea5y ch\u1ee9ng nh\u1eadn xu\u1ea5t x\u1ee9\/ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 nghi\u1ec7m thu v\u00e0 th\u1ee7 t\u1ee5c.<br \/>\n&#8211; \u0110\u00f3ng d\u1ea5u\/marking: ti\u00eau chu\u1ea9n (v\u00ed d\u1ee5 A312), m\u00e1c, size\/schedule, Heat No., nh\u00e0 s\u1ea3n xu\u1ea5t.<br \/>\n&#8211; Y\u00eau c\u1ea7u b\u1ed5 sung (khi c\u1ea7n): NACE MR0175\/ISO 15156 cho m\u00f4i tr\u01b0\u1eddng H2S; ki\u1ec3m so\u00e1t ferrite v\u00f9ng h\u00e0n; test RT\/UT 100%.<\/p>\n<h2 id=\"toc-7-vi-du-chon-ong-nha-may-sua-duong-ong-cipsip\">V\u00ed d\u1ee5 ch\u1ecdn \u1ed1ng \u2013 Nh\u00e0 m\u00e1y s\u1eefa (\u0111\u01b0\u1eddng \u1ed1ng CIP\/SIP)<\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n: ASTM A270 316L.<br \/>\n&#8211; B\u1ec1 m\u1eb7t: y\u00eau c\u1ea7u Ra trong \u2264 0.8 \u03bcm (ho\u1eb7c theo URS), h\u00e0n trong m\u00e0i ph\u1eb3ng, t\u1ea9y \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a.<br \/>\n&#8211; Gia c\u00f4ng: h\u00e0n TIG qu\u1ef9 \u0111\u1ea1o, kh\u00ed che Ar, ki\u1ec3m tra n\u1ed9i soi (borescope).<br \/>\n&#8211; Ch\u1ee9ng t\u1eeb: MTC 3.1, ch\u1ee9ng nh\u1eadn v\u1ec7 sinh v\u1eadt li\u1ec7u; n\u1ebfu theo d\u01b0\u1ee3c, tham chi\u1ebfu th\u00eam ASME BPE cho ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (SF) v\u00e0 ki\u1ec3m so\u00e1t Endotoxin.<br \/>\n&#8211; K\u1ebft n\u1ed1i ph\u1ee5 ki\u1ec7n: \u1ed1ng \u2013 co \u2013 t\u00ea \u2013 clamp fitting \u0111\u1ea1t chu\u1ea9n sanitary \u0111\u1ed3ng b\u1ed9.<\/p>\n<h2 id=\"toc-8-loi-pho-bien-khi-dat-hang-va-cach-tranh\">L\u1ed7i ph\u1ed5 bi\u1ebfn khi \u0111\u1eb7t h\u00e0ng v\u00e0 c\u00e1ch tr\u00e1nh<\/h2>\n<p>&#8211; Nh\u1ea7m A554 (c\u01a1 kh\u00ed\/trang tr\u00ed) thay cho A312 (ch\u1ecbu \u00e1p).<br \/>\n&#8211; Kh\u00f4ng n\u00eau schedule\/\u0111\u1ed9 d\u00e0y \u2192 th\u00e0nh m\u1ecfng, gi\u1ea3m \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c.<br \/>\n&#8211; Ch\u1ecdn 304 thay v\u00ec 316L cho m\u00f4i tr\u01b0\u1eddng Cl- \u2192 pitting s\u1edbm.<br \/>\n&#8211; V\u1edbi \u1ed1ng v\u1ec7 sinh, kh\u00f4ng quy \u0111\u1ecbnh Ra v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u2192 kh\u00f3 nghi\u1ec7m thu.<br \/>\n&#8211; Thi\u1ebfu MTC 3.1\/CO\/CQ \u2192 kh\u00f4ng qua QA\/QC d\u1ef1 \u00e1n.<br \/>\n&#8211; Tr\u1ed9n chu\u1ea9n k\u00edch th\u01b0\u1edbc (metric tube vs inch pipe) \u2192 kh\u00f4ng l\u1eafp \u0111\u01b0\u1ee3c ph\u1ee5 ki\u1ec7n.<\/p>\n<h2 id=\"toc-9-checklist-thong-tin-toi-thieu-khi-dat-hang\">Checklist th\u00f4ng tin t\u1ed1i thi\u1ec3u khi \u0111\u1eb7t h\u00e0ng<\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n: ASTM A312\/A270\/A269\/\u2026<br \/>\n&#8211; M\u00e1c th\u00e9p: 304\/304L\/316\/316L\/321\/\u2026<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc: OD, WT (ho\u1eb7c Schedule), chi\u1ec1u d\u00e0i.<br \/>\n&#8211; K\u1ebft c\u1ea5u: li\u1ec1n m\u1ea1ch hay h\u00e0n; y\u00eau c\u1ea7u \u1ee7 dung d\u1ecbch.<br \/>\n&#8211; Ki\u1ec3m tra: Hydro\/NDT, RT\/UT (n\u1ebfu c\u1ea7n), A262 (n\u1ebfu c\u1ea7n).<br \/>\n&#8211; B\u1ec1 m\u1eb7t: pickled &#038; passivated; v\u1edbi A270 n\u00eau Ra v\u00e0 y\u00eau c\u1ea7u \u0111\u00e1nh b\u00f3ng\/EP.<br \/>\n&#8211; Ch\u1ee9ng t\u1eeb: MTC 3.1, CO\/CQ; c\u00e1c y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t (NACE, ferrite).<br \/>\n&#8211; \u0110\u00f3ng g\u00f3i: n\u1eafp b\u1ecbt \u0111\u1ea7u, b\u1ecdc PE\/PP, pallet g\u1ed7, ch\u1ed1ng nhi\u1ec5m s\u1eaft.<\/p>\n<h2 id=\"toc-10-luu-kho-va-xu-ly\">L\u01b0u kho v\u00e0 x\u1eed l\u00fd<\/h2>\n<p>&#8211; B\u1ea3o v\u1ec7 \u0111\u1ea7u \u1ed1ng, tr\u00e1nh va \u0111\u1eadp m\u00e9p v\u00e1t.<br \/>\n&#8211; L\u01b0u kho kh\u00f4 r\u00e1o, tr\u00e1nh nhi\u1ec5m b\u1ea9n s\u1eaft th\u00e9p carbon.<br \/>\n&#8211; V\u1edbi \u1ed1ng v\u1ec7 sinh: b\u1ecdc k\u00edn, ch\u1ec9 m\u1edf khi l\u1eafp \u0111\u1eb7t; d\u00f9ng g\u0103ng s\u1ea1ch.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A312\/A312M \u2013 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes (ASTM International): https:\/\/www.astm.org<br \/>\n&#8211; ASTM A270\/A270M \u2013 Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing (ASTM International): https:\/\/www.astm.org<br \/>\n&#8211; ASTM A269\/A269M, A213\/A213M, A249\/A249M, A358\/A358M, A778; y\u00eau c\u1ea7u chung A999\/A999M v\u00e0 A1016\/A1016M (ASTM International): https:\/\/www.astm.org<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe (The American Society of Mechanical Engineers): https:\/\/www.asme.org<br \/>\n&#8211; ASME BPE \u2013 Bioprocessing Equipment Standard (ASME): https:\/\/www.asme.org<br \/>\n&#8211; JIS G3459 (Japanese Standards Association): https:\/\/www.jsa.or.jp<br \/>\n&#8211; EN 10216-5 v\u00e0 EN 10217-7 (CEN): https:\/\/standards.cen.eu<br \/>\n&#8211; ASTM A380\/A967 \u2013 L\u00e0m s\u1ea1ch, t\u1ea9y r\u1eeda v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a inox (ASTM International): https:\/\/www.astm.org<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; ASTM A312 l\u00e0 ti\u00eau chu\u1ea9n \u201cx\u01b0\u01a1ng s\u1ed1ng\u201d cho \u1ed1ng inox c\u00f4ng nghi\u1ec7p ch\u1ecbu \u00e1p\/\u0103n m\u00f2n; A270 d\u00e0nh cho \u1ee9ng d\u1ee5ng v\u1ec7 sinh th\u1ef1c ph\u1ea9m \u2013 \u0111\u1ed3 u\u1ed1ng \u2013 d\u01b0\u1ee3c v\u1edbi y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t cao.<br \/>\n&#8211; C\u00e1c ti\u00eau chu\u1ea9n b\u1ed5 tr\u1ee3 (A269, A213, A249, A358, A778, A554) ph\u1ee5c v\u1ee5 nh\u1eefng k\u1ecbch b\u1ea3n c\u1ee5 th\u1ec3; ch\u1ecdn \u0111\u00fang ti\u00eau chu\u1ea9n gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n, tu\u1ed5i th\u1ecd v\u00e0 nghi\u1ec7m thu thu\u1eadn l\u1ee3i.<br \/>\n&#8211; Khi \u0111\u1eb7t h\u00e0ng, lu\u00f4n n\u00eau r\u00f5 ti\u00eau chu\u1ea9n, m\u00e1c, schedule\/\u0111\u1ed9 d\u00e0y, x\u1eed l\u00fd nhi\u1ec7t, y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m, b\u1ec1 m\u1eb7t v\u00e0 ch\u1ee9ng t\u1eeb MTC 3.1\/CO\/CQ.<br \/>\nC\u1ea7n t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n v\u00e0 m\u00e1c th\u00e9p t\u1ed1i \u01b0u cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n \u1ed1ng inox: ASTM A312, A270, A269, A213\u2026 C\u00e1ch ch\u1ecdn theo \u1ee9ng d\u1ee5ng, ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng, ch\u1ee9ng t\u1eeb MTC 3.1 v\u00e0 CO\/CQ.<\/p>\n","protected":false},"author":7,"featured_media":1056,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1897","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\/1897","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=1897"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1897\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1056"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}