{"id":1664,"date":"2026-02-12T00:34:10","date_gmt":"2026-02-11T17:34:10","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-duc-chon-loai-nao-cho-du-an-cua-ban\/"},"modified":"2026-02-12T00:34:10","modified_gmt":"2026-02-11T17:34:10","slug":"ong-inox-han-hay-duc-chon-loai-nao-cho-du-an-cua-ban","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/ong-inox-han-hay-duc-chon-loai-nao-cho-du-an-cua-ban\/","title":{"rendered":"\u1ed0ng inox h\u00e0n hay \u0111\u00fac: Ch\u1ecdn lo\u1ea1i n\u00e0o cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n?"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-khai-niem-va-quy-trinh-san-xuat\">Kh\u00e1i ni\u1ec7m v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/a><\/li>\n<li><a href=\"#toc-1-so-sanh-ky-thuat-cot-loi\">So s\u00e1nh k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i<\/a><\/li>\n<li><a href=\"#toc-2-goi-y-chon-nhanh-theo-ung-dung\">G\u1ee3i \u00fd ch\u1ecdn nhanh theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-3-checklist-ra-quyet-dinh\">Checklist ra quy\u1ebft \u0111\u1ecbnh<\/a><\/li>\n<li><a href=\"#toc-4-dat-hang-dung-ngay-tu-dau\">\u0110\u1eb7t h\u00e0ng \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u<\/a><\/li>\n<li><a href=\"#toc-5-sai-lam-thuong-gap-can-tranh\">Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-6-vi-du-ung-dung-thuc-te\">V\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-7-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-8-ket-luan-nen-chon-loai-nao\">K\u1ebft lu\u1eadn: N\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/a><\/li>\n<\/ul>\n<\/div>\n<p>\u1ed0ng inox h\u00e0n v\u00e0 \u1ed1ng inox \u0111\u00fac (seamless) l\u00e0 hai l\u1ef1a ch\u1ecdn c\u1ed1t l\u00f5i khi thi\u1ebft k\u1ebf \u0111\u01b0\u1eddng \u1ed1ng, khung k\u1ebft c\u1ea5u hay thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7. \u0110\u00e2y l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 tr\u1ecdng t\u00e2m trong \u201cC\u1ea9m nang v\u1ec1 \u1ed0ng v\u00e0 H\u1ed9p Inox\u201d, nh\u01b0ng b\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i th\u1eb3ng v\u00e0o c\u00e2u h\u1ecfi: khi n\u00e0o n\u00ean d\u00f9ng \u1ed1ng h\u00e0n, khi n\u00e0o n\u00ean d\u00f9ng \u1ed1ng \u0111\u00fac \u2014 d\u1ef1a tr\u00ean y\u00eau c\u1ea7u \u00e1p su\u1ea5t, nhi\u1ec7t \u0111\u1ed9, m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, ti\u00eau chu\u1ea9n, kh\u1ea3 d\u1ee5ng v\u00e0 ng\u00e2n s\u00e1ch t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-khai-niem-va-quy-trinh-san-xuat\">Kh\u00e1i ni\u1ec7m v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t<\/h2>\n<h3>\u1ed0ng inox h\u00e0n (Welded)<\/h3>\n<p>&#8211; Quy tr\u00ecnh: C\u00e1n d\u1ea3i (coil) \u2192 cu\u1ed1n th\u00e0nh \u1ed1ng \u2192 h\u00e0n d\u1ecdc (ERW, TIG, laser, EFW) \u2192 x\u1eed l\u00fd b\u1ec1 m\u1eb7t (t\u1ea9y g\u1ec9, th\u1ee5 \u0111\u1ed9ng h\u00f3a), c\u00f3 th\u1ec3 m\u00e0i ph\u1eb3ng \u0111\u01b0\u1eddng h\u00e0n.<br \/>\n&#8211; Ti\u00eau chu\u1ea9n th\u01b0\u1eddng d\u00f9ng: ASTM A312\/A312M (\u1ed1ng h\u00e0n austenitic cho d\u1ecbch v\u1ee5 chung\/nhi\u1ec7t \u0111\u1ed9 cao), ASME B36.19M (k\u00edch th\u01b0\u1edbc \u1ed1ng inox), EN 10217-7 (\u1ed1ng h\u00e0n kh\u00f4ng g\u1ec9 cho m\u1ee5c \u0111\u00edch \u00e1p l\u1ef1c), ASTM A270 (\u1ed1ng v\u1ec7 sinh cho ng\u00e0nh s\u1eefa, th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c).<br \/>\n&#8211; \u0110\u1eb7c tr\u01b0ng: Gi\u00e1 t\u1ed1t, cung c\u1ea5p nhanh, k\u00edch th\u01b0\u1edbc l\u1edbn\/\u0111\u1ed9 d\u00e0y m\u1ecfng d\u1ec5 s\u1ea3n xu\u1ea5t, b\u1ec1 m\u1eb7t \u0111\u1ed3ng \u0111\u1ec1u. C\u00f3 m\u1ed1i h\u00e0n d\u1ecdc c\u1ea7n ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h3>\u1ed0ng inox \u0111\u00fac (Seamless)<\/h3>\n<p>&#8211; Quy tr\u00ecnh: \u0110\u00f9n\u2013\u0111\u1ee5c l\u1ed7 ph\u00f4i \u2192 c\u00e1n n\u00f3ng\/k\u00e9o ngu\u1ed9i \u2192 x\u1eed l\u00fd nhi\u1ec7t \u2192 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t.<br \/>\n&#8211; Ti\u00eau chu\u1ea9n th\u01b0\u1eddng d\u00f9ng: ASTM A312\/A312M (seamless), EN 10216-5 (\u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 li\u1ec1n m\u1ea1ch cho m\u1ee5c \u0111\u00edch \u00e1p l\u1ef1c), ASME B36.19M.<br \/>\n&#8211; \u0110\u1eb7c tr\u01b0ng: Kh\u00f4ng c\u00f3 m\u1ed1i h\u00e0n d\u1ecdc, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p cao\/chu k\u1ef3 t\u1ea3i kh\u1eafc nghi\u1ec7t t\u1ed1t h\u01a1n, th\u01b0\u1eddng c\u00f3 gi\u00e1 cao h\u01a1n v\u00e0 th\u1eddi gian \u0111\u1eb7t h\u00e0ng d\u00e0i h\u01a1n.<\/p>\n<h2 id=\"toc-1-so-sanh-ky-thuat-cot-loi\">So s\u00e1nh k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i<\/h2>\n<h3>1) Kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9<\/h3>\n<p>&#8211; Th\u00e0nh ph\u1ea7n quy\u1ebft \u0111\u1ecbnh: m\u00e1c th\u00e9p (v\u00ed d\u1ee5 304\/304L\/316L), chi\u1ec1u d\u00e0y (Schedule 5S\/10S\/40S\u2026), nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c, v\u00e0 \u201ch\u1ec7 s\u1ed1 m\u1ed1i h\u00e0n d\u1ecdc\u201d theo quy ph\u1ea1m thi\u1ebft k\u1ebf.<br \/>\n&#8211; Th\u1ef1c ti\u1ec5n k\u1ef9 thu\u1eadt: Theo ASME B31.3 (Process Piping), \u1ed1ng li\u1ec1n m\u1ea1ch th\u01b0\u1eddng c\u00f3 h\u1ec7 s\u1ed1 m\u1ed1i h\u00e0n d\u1ecdc E = 1,0; \u1ed1ng h\u00e0n c\u00f3 E dao \u0111\u1ed9ng 0,85\u20131,0 t\u00f9y m\u1ee9c ki\u1ec3m tra NDT\/radiography v\u00e0 ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng. \u0110i\u1ec1u n\u00e0y khi\u1ebfn \u1ee9ng su\u1ea5t cho ph\u00e9p\/t\u00ednh \u00e1p su\u1ea5t thi\u1ebft k\u1ebf c\u1ee7a \u1ed1ng \u0111\u00fac nh\u00ecn chung thu\u1eadn l\u1ee3i h\u01a1n trong d\u1ecbch v\u1ee5 \u00e1p cao ho\u1eb7c chu k\u1ef3 nhi\u1ec7t kh\u1eafc nghi\u1ec7t.<br \/>\n&#8211; H\u1ec7 qu\u1ea3 ch\u1ecdn v\u1eadt t\u01b0:<br \/>\n  &#8211; D\u1ecbch v\u1ee5 \u00e1p su\u1ea5t cao, s\u1ed1c \u00e1p, rung \u0111\u1ed9ng\/chu k\u1ef3 nhi\u1ec7t l\u1edbn: \u01b0u ti\u00ean \u1ed1ng \u0111\u00fac.<br \/>\n  &#8211; D\u1ecbch v\u1ee5 \u00e1p th\u1ea5p\u2013trung b\u00ecnh (n\u01b0\u1edbc, kh\u00ed n\u00e9n, HVAC, PHE, CIP \u1edf T kh\u00f4ng qu\u00e1 cao): \u1ed1ng h\u00e0n \u0111\u1ea1t y\u00eau c\u1ea7u n\u1ebfu \u0111\u00fang ti\u00eau chu\u1ea9n v\u00e0 ki\u1ec3m tra.<\/p>\n<p>Ngu\u1ed3n: ASME B31.3; ASTM A312\/A312M; ASME B36.19M.<\/p>\n<h3>2) Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/h3>\n<p>&#8211; B\u1ea3n ch\u1ea5t: \u0102n m\u00f2n ph\u1ee5 thu\u1ed9c m\u00e1c th\u00e9p v\u00e0 b\u1ec1 m\u1eb7t. V\u1edbi \u1ed1ng h\u00e0n, v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t (HAZ) n\u1ebfu kh\u00f4ng t\u1ea9y g\u1ec9\/th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u00fang chu\u1ea9n c\u00f3 th\u1ec3 nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi \u0103n m\u00f2n k\u1ebd h\u1edf ho\u1eb7c \u0103n m\u00f2n tinh gi\u1edbi.<br \/>\n&#8211; Th\u1ef1c h\u00e0nh t\u1ed1t: D\u00f9ng m\u00e1c \u201cL\u201d (304L\/316L) \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1ea1y c\u1ea3m h\u00f3a; \u00e1p d\u1ee5ng t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A380\/A967; trong m\u00f4i tr\u01b0\u1eddng chloride (n\u01b0\u1edbc bi\u1ec3n, th\u00e1p gi\u1ea3i nhi\u1ec7t), c\u00e2n nh\u1eafc 316L ho\u1eb7c duplex. V\u1edbi \u1ed1ng h\u00e0n cho ng\u00e0nh v\u1ec7 sinh, y\u00eau c\u1ea7u \u0111\u00e1nh b\u00f3ng ID\/OD v\u00e0 l\u00e0m ph\u1eb3ng \u0111\u01b0\u1eddng h\u00e0n (ASTM A270).<br \/>\n&#8211; K\u1ebft lu\u1eadn: Khi s\u1ea3n xu\u1ea5t v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t chu\u1ea9n, \u1ed1ng h\u00e0n v\u00e0 \u1ed1ng \u0111\u00fac c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u00f9ng m\u00e1c th\u00e9p trong \u0111a s\u1ed1 m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n<p>Ngu\u1ed3n: ASTM A380; ASTM A967; ASTM A270.<\/p>\n<h3>3) Dung sai, h\u00ecnh h\u1ecdc v\u00e0 b\u1ec1 m\u1eb7t<\/h3>\n<p>&#8211; \u1ed0ng h\u00e0n: \u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u \u0111\u01b0\u1eddng k\u00ednh v\u00e0 \u0111\u1ed9 d\u00e0y r\u1ea5t t\u1ed1t do l\u00e0m t\u1eeb coil; \u0111\u01b0\u1eddng h\u00e0n c\u00f3 th\u1ec3 m\u00e0i ph\u1eb3ng; d\u1ec5 \u0111\u1ea1t y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t trang tr\u00ed (No.4\/HL, 180\u2013400 grit).<br \/>\n&#8211; \u1ed0ng \u0111\u00fac: H\u00ecnh h\u1ecdc c\u00f3 th\u1ec3 bi\u1ebfn thi\u00ean nhi\u1ec1u h\u01a1n t\u00f9y l\u00f4 c\u00e1n\/k\u00e9o; th\u01b0\u1eddng ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t d\u1ea1ng pickled.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc ph\u1ed5 bi\u1ebfn t\u1ea1i VN: DN15\u2013DN300 (ASME B36.19M), Schedule 5S\/10S\/40S; \u1ed1ng trang tr\u00ed h\u1ec7 m\u00e9t (\u00d812.7\u2013\u00d8114, d\u00e0y 0,6\u20133,0 mm).<\/p>\n<h3>4) Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ch\u1ee9ng ch\u1ec9<\/h3>\n<p>&#8211; \u1ed0ng h\u00e0n: NDT (eddy current\/UT), ki\u1ec3m tra X-quang t\u1ea1i m\u1ed1i h\u00e0n v\u1edbi c\u1ea5p h\u1ea1ng cao; th\u1eed th\u1ee7y l\u1ef1c theo ASTM A312\/A270.<br \/>\n&#8211; \u1ed0ng \u0111\u00fac: Th\u01b0\u1eddng th\u1eed th\u1ee7y l\u1ef1c v\u00e0\/ho\u1eb7c NDT to\u00e0n th\u00e2n \u1ed1ng.<br \/>\n&#8211; Ch\u1ee9ng ch\u1ec9: \u0110\u1ec1 ngh\u1ecb y\u00eau c\u1ea7u MTC 3.1 (EN 10204), ghi r\u00f5 m\u00e1c th\u00e9p, nhi\u1ec7t luy\u1ec7n, c\u01a1 t\u00ednh, th\u00e0nh ph\u1ea7n, NDT, ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng.<\/p>\n<h3>5) Chi ph\u00ed v\u00e0 kh\u1ea3 d\u1ee5ng (th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam)<\/h3>\n<p>&#8211; \u1ed0ng h\u00e0n 304\/304L th\u01b0\u1eddng r\u1ebb h\u01a1n 20\u201340% so v\u1edbi \u1ed1ng \u0111\u00fac c\u00f9ng k\u00edch th\u01b0\u1edbc; ch\u00eanh l\u1ec7ch v\u1edbi 316\/316L c\u00f3 th\u1ec3 30\u201350% t\u00f9y th\u1eddi \u0111i\u1ec3m.<br \/>\n&#8211; H\u00e0ng s\u1eb5n kho: \u1ed0ng h\u00e0n (201\/304\/316L) \u0111a d\u1ea1ng k\u00edch c\u1ee1, b\u1ec1 m\u1eb7t trang tr\u00ed v\u00e0 c\u00f4ng nghi\u1ec7p; \u1ed1ng \u0111\u00fac c\u00e1c size ph\u1ed5 bi\u1ebfn Sch 10S\/40S s\u1eb5n h\u1ea1n ch\u1ebf h\u01a1n, size \u0111\u1eb7c th\u00f9 c\u1ea7n \u0111\u1eb7t h\u00e0ng.<\/p>\n<p>L\u01b0u \u00fd: T\u1ef7 l\u1ec7 ch\u00eanh l\u1ec7ch gi\u00e1 mang t\u00ednh tham kh\u1ea3o v\u00e0 bi\u1ebfn \u0111\u1ed9ng theo th\u1ecb tr\u01b0\u1eddng, xu\u1ea5t x\u1ee9, ch\u1ee9ng ch\u1ec9 v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m tra.<\/p>\n<h2 id=\"toc-2-goi-y-chon-nhanh-theo-ung-dung\">G\u1ee3i \u00fd ch\u1ecdn nhanh theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>&#8211; N\u01b0\u1edbc s\u1ea1ch, n\u01b0\u1edbc RO, HVAC (\u00e1p th\u1ea5p\u2013trung b\u00ecnh, T \u2264 120\u00b0C):<br \/>\n  \u2192 \u1ed0ng h\u00e0n 304L\/316L, Schedule 5S\/10S, theo ASTM A312; v\u1edbi h\u1ec7 RO\/si\u00eau s\u1ea1ch d\u00f9ng \u1ed1ng h\u00e0n v\u1ec7 sinh ASTM A270, m\u1ed1i h\u00e0n m\u00e0i ph\u1eb3ng, \u0111\u00e1nh b\u00f3ng ID\/OD.<br \/>\n&#8211; Th\u1ef1c ph\u1ea9m \u2013 \u0111\u1ed3 u\u1ed1ng \u2013 d\u01b0\u1ee3c ph\u1ea9m (sanitary):<br \/>\n  \u2192 \u1ed0ng h\u00e0n ASTM A270 (304L\/316L), b\u1ec1 m\u1eb7t ID\/OD \u0111\u00e1nh b\u00f3ng, \u0111\u01b0\u1eddng h\u00e0n ph\u1eb3ng; ph\u1ee5 ki\u1ec7n clamp\/orbital welding.<br \/>\n&#8211; H\u00f3a ch\u1ea5t nh\u1eb9, CIP, \u0111\u01b0\u1eddng \u1ed1ng utility nh\u00e0 m\u00e1y (\u00e1p trung b\u00ecnh):<br \/>\n  \u2192 \u1ed0ng h\u00e0n 316L n\u1ebfu c\u00f3 chloride\/h\u00f3a ch\u1ea5t; y\u00eau c\u1ea7u t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n, NDT theo d\u1ef1 \u00e1n.<br \/>\n&#8211; H\u01a1i b\u00e3o h\u00f2a\/condensate, d\u1ea7u nhi\u1ec7t, \u00e1p cao \u2013 nhi\u1ec7t cao, rung \u0111\u1ed9ng m\u1ea1nh:<br \/>\n  \u2192 \u01afu ti\u00ean \u1ed1ng \u0111\u00fac ASTM A312 (304\/304L\/316L ho\u1eb7c m\u00e1c ch\u1ecbu nhi\u1ec7t ph\u00f9 h\u1ee3p), Schedule 40S tr\u1edf l\u00ean t\u00f9y t\u00ednh to\u00e1n theo ASME B31.3.<br \/>\n&#8211; D\u1ea7u kh\u00ed, h\u00f3a ch\u1ea5t \u00e1p l\u1ef1c, chu k\u1ef3 nhi\u1ec7t kh\u1eafc nghi\u1ec7t, an to\u00e0n qu\u00e1 tr\u00ecnh nghi\u00eam ng\u1eb7t:<br \/>\n  \u2192 \u1ed0ng \u0111\u00fac; ki\u1ec3m tra NDT m\u1edf r\u1ed9ng, ch\u1ee9ng ch\u1ec9 \u0111\u1ea7y \u0111\u1ee7; c\u00e2n nh\u1eafc duplex n\u1ebfu chloride cao\/nhi\u1ec7t \u0111\u1ed9 cao.<br \/>\n&#8211; K\u1ebft c\u1ea5u, lan can, khung m\u00e1y, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t t\u1ea5m (PHE) \u0111\u1ea7u v\u00e0o\/ra \u00e1p th\u1ea5p:<br \/>\n  \u2192 \u1ed0ng h\u00e0n 201\/304\/316 (ch\u1ecdn 304\/316 cho m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi\/ven bi\u1ec3n); b\u1ec1 m\u1eb7t trang tr\u00ed n\u1ebfu y\u00eau c\u1ea7u th\u1ea9m m\u1ef9.<\/p>\n<h2 id=\"toc-3-checklist-ra-quyet-dinh\">Checklist ra quy\u1ebft \u0111\u1ecbnh<\/h2>\n<p>Tr\u1ea3 l\u1eddi nhanh 6 c\u00e2u sau \u0111\u1ec3 ch\u1ed1t l\u1ef1a ch\u1ecdn:<br \/>\n1) \u00c1p su\u1ea5t thi\u1ebft k\u1ebf\/chu k\u1ef3 \u00e1p su\u1ea5t c\u00f3 cao kh\u00f4ng? N\u1ebfu cao\/dao \u0111\u1ed9ng m\u1ea1nh \u2192 nghi\u00eang v\u1ec1 \u1ed1ng \u0111\u00fac.<br \/>\n2) Nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh > 120\u2013150\u00b0C? N\u1ebfu c\u00f3 \u2192 ki\u1ec3m tra ti\u00eau chu\u1ea9n, th\u01b0\u1eddng \u01b0u ti\u00ean \u1ed1ng \u0111\u00fac.<br \/>\n3) M\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n (chloride, pH, v\u1ec7 sinh CIP\/SIP)? N\u1ebfu kh\u1eafc nghi\u1ec7t \u2192 ch\u1ecdn m\u00e1c th\u00e9p ph\u00f9 h\u1ee3p (316L\/duplex) v\u00e0 ti\u00eau chu\u1ea9n v\u1ec7 sinh; \u1ed1ng h\u00e0n v\u1eabn ph\u00f9 h\u1ee3p n\u1ebfu x\u1eed l\u00fd b\u1ec1 m\u1eb7t chu\u1ea9n.<br \/>\n4) Y\u00eau c\u1ea7u v\u1ec7 sinh, b\u1ec1 m\u1eb7t trong b\u00f3ng g\u01b0\u01a1ng? \u2192 \u1ed0ng h\u00e0n ASTM A270.<br \/>\n5) Ng\u00e2n s\u00e1ch v\u00e0 ti\u1ebfn \u0111\u1ed9 c\u00f3 g\u1eaft? \u2192 \u1ed0ng h\u00e0n t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 s\u1eb5n h\u00e0ng.<br \/>\n6) Quy ph\u1ea1m thi\u1ebft k\u1ebf\/Bid Spec quy \u0111\u1ecbnh lo\u1ea1i \u1ed1ng? \u2192 Tu\u00e2n th\u1ee7 tuy\u1ec7t \u0111\u1ed1i (nhi\u1ec1u spec quy \u0111\u1ecbnh seamless cho c\u00e1c line \u00e1p\/nhi\u1ec7t cao).<\/p>\n<h2 id=\"toc-4-dat-hang-dung-ngay-tu-dau\">\u0110\u1eb7t h\u00e0ng \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u<\/h2>\n<p>Khi g\u1eedi y\u00eau c\u1ea7u b\u00e1o gi\u00e1\/mua h\u00e0ng, h\u00e3y n\u00eau r\u00f5:<br \/>\n&#8211; Lo\u1ea1i \u1ed1ng: h\u00e0n hay \u0111\u00fac (welded\/seamless).<br \/>\n&#8211; M\u00e1c th\u00e9p: 304\/304L\/316L\u2026 v\u00e0 ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng (ASTM A312, EN 10216-5\/EN 10217-7\u2026).<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc: OD \u00d7 WT ho\u1eb7c DN + Schedule (5S\/10S\/40S) theo ASME B36.19M; chi\u1ec1u d\u00e0i thanh (th\u01b0\u1eddng 6 m).<br \/>\n&#8211; B\u1ec1 m\u1eb7t: pickled &#038; passivated, \u0111\u00e1nh b\u00f3ng No.4\/HL; v\u1edbi sanitary n\u00eau r\u00f5 \u0111\u1ed9 nh\u00e1m Ra.<br \/>\n&#8211; Y\u00eau c\u1ea7u ki\u1ec3m tra: hydrotest, NDT (eddy current\/UT), X-ray m\u1ed1i h\u00e0n n\u1ebfu c\u1ea7n; MTC 3.1 (EN 10204); PMI khi giao h\u00e0ng.<br \/>\n&#8211; \u0110\u1ea7u \u1ed1ng: Plain end (PE) hay Beveled end (BE).<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9: co, t\u00ea, m\u0103ng s\u00f4ng, m\u1eb7t b\u00edch c\u00f9ng ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u.<\/p>\n<h2 id=\"toc-5-sai-lam-thuong-gap-can-tranh\">Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh<\/h2>\n<p>&#8211; D\u00f9ng \u1ed1ng h\u00e0n trang tr\u00ed (201\/304 m\u1ecfng, ch\u1ec9 \u0111\u00e1nh b\u00f3ng ngo\u00e0i) cho \u0111\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c \u2192 ti\u1ec1m \u1ea9n r\u1ee7i ro v\u1ee1\/\u0103n m\u00f2n trong.<br \/>\n&#8211; Kh\u00f4ng t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n l\u1eafp \u0111\u1eb7t \u2192 gi\u1ea3m tu\u1ed5i th\u1ecd do \u0103n m\u00f2n \u0111i\u1ec3m.<br \/>\n&#8211; Tr\u1ed9n l\u1eabn 201 v\u1edbi 304\/316 trong c\u00f9ng h\u1ec7 \u2192 ch\u00eanh l\u1ec7ch b\u1ec1n \u0103n m\u00f2n g\u00e2y h\u01b0 h\u1ea1i c\u1ee5c b\u1ed9.<br \/>\n&#8211; Ch\u1ecdn Schedule qu\u00e1 m\u1ecfng v\u00ec \u201cti\u1ebft ki\u1ec7m\u201d \u2192 kh\u00f4ng \u0111\u1ea1t \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc\/\u0103n m\u00f2n theo thi\u1ebft k\u1ebf.<br \/>\n&#8211; B\u1ecf qua quy ph\u1ea1m thi\u1ebft k\u1ebf (ASME B31.3\/B31.1\u2026) khi t\u00ednh b\u1ec1 d\u00e0y\/\u00e1p su\u1ea5t.<\/p>\n<h2 id=\"toc-6-vi-du-ung-dung-thuc-te\">V\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n<p>&#8211; D\u00e2y chuy\u1ec1n n\u01b0\u1edbc u\u1ed1ng \u0111\u00f3ng chai: \u1ed0ng h\u00e0n ASTM A270 316L, m\u1ed1i h\u00e0n m\u00e0i ph\u1eb3ng, \u0111\u00e1nh b\u00f3ng ID\/OD Ra \u2264 0,8 \u00b5m, h\u00e0n orbital \u2192 v\u1ec7 sinh t\u1ed1i \u01b0u, chi ph\u00ed h\u1ee3p l\u00fd.<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng h\u01a1i b\u00e3o h\u00f2a 10\u201320 bar trong nh\u00e0 m\u00e1y: \u1ed0ng \u0111\u00fac ASTM A312 304\/316L, Schedule 40S; \u0111\u1ea7u BE \u0111\u1ec3 h\u00e0n \u0111\u1ed1i \u0111\u1ea7u; NDT theo B31.3.<br \/>\n&#8211; H\u1ec7 th\u1ed1ng n\u01b0\u1edbc mu\u1ed1i tu\u1ea7n ho\u00e0n: \u01afu ti\u00ean 316L; n\u1ebfu \u00e1p th\u1ea5p, \u1ed1ng h\u00e0n pickled &#038; passivated \u0111\u1ea1t; g\u1ea7n bi\u1ec3n\/x\u1ecbt mu\u1ed1i \u2192 c\u00e2n nh\u1eafc duplex ho\u1eb7c s\u01a1n b\u1ea3o v\u1ec7 ngo\u00e0i.<\/p>\n<h2 id=\"toc-7-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A312\/A312M \u2013 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes: https:\/\/www.astm.org\/a0312_a0312m-22.html<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe (dimensions): https:\/\/www.asme.org<br \/>\n&#8211; EN 10216-5 \u2013 Seamless steel tubes for pressure purposes \u2013 Stainless steel: https:\/\/standards.iteh.ai\/catalog\/standards\/cen\/41a0c7d5-\u2026<br \/>\n&#8211; EN 10217-7 \u2013 Welded steel tubes for pressure purposes \u2013 Stainless steel: https:\/\/standards.iteh.ai<br \/>\n&#8211; ASME B31.3 \u2013 Process Piping: https:\/\/www.asme.org\/codes-standards<br \/>\n&#8211; ASTM A270 \u2013 Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing: https:\/\/www.astm.org\/a0270-22.html<br \/>\n&#8211; ASTM A380\/A967 \u2013 Cleaning, Descaling, and Passivation of Stainless Steel: https:\/\/www.astm.org<\/p>\n<h2 id=\"toc-8-ket-luan-nen-chon-loai-nao\">K\u1ebft lu\u1eadn: N\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/h2>\n<p>&#8211; Ch\u1ecdn \u1ed1ng inox h\u00e0n khi b\u1ea1n c\u1ea7n t\u1ed1i \u01b0u chi ph\u00ed, ti\u1ebfn \u0111\u1ed9, y\u00eau c\u1ea7u \u00e1p su\u1ea5t\u2013nhi\u1ec7t \u0111\u1ed9 \u1edf m\u1ee9c th\u1ea5p \u0111\u1ebfn trung b\u00ecnh, ho\u1eb7c c\u1ea7n b\u1ec1 m\u1eb7t v\u1ec7 sinh\/trang tr\u00ed cao (ASTM A270).<br \/>\n&#8211; Ch\u1ecdn \u1ed1ng inox \u0111\u00fac khi h\u1ec7 th\u1ed1ng ch\u1ecbu \u00e1p\/nhi\u1ec7t cao, s\u1ed1c \u00e1p\/rung \u0111\u1ed9ng l\u1edbn, ho\u1eb7c quy ph\u1ea1m\/bid spec y\u00eau c\u1ea7u seamless; \u01b0u ti\u00ean cho c\u00e1c line quan tr\u1ecdng v\u1ec1 an to\u00e0n qu\u00e1 tr\u00ecnh.<br \/>\n&#8211; Trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, m\u00e1c th\u00e9p v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t quy\u1ebft \u0111\u1ecbnh nhi\u1ec1u h\u01a1n b\u1ea3n ch\u1ea5t h\u00e0n\/\u0111\u00fac. Thi\u1ebft k\u1ebf theo \u0111\u00fang quy ph\u1ea1m (ASME B31.3), ch\u1ecdn schedule ph\u00f9 h\u1ee3p v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m tra\/ch\u1ee9ng ch\u1ec9 \u0111\u1ea7y \u0111\u1ee7 s\u1ebd \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd v\u00e0 an to\u00e0n.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n chi ti\u1ebft h\u1ed3 s\u01a1 k\u1ef9 thu\u1eadt, ti\u00eau chu\u1ea9n v\u00e0 b\u00e1o gi\u00e1 t\u1ed1i \u01b0u cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u2013 Hotline: 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 \u0111\u00fac theo ti\u00eau chu\u1ea9n, \u00e1p su\u1ea5t, \u0103n m\u00f2n, chi ph\u00ed v\u00e0 \u1ee9ng d\u1ee5ng. G\u1ee3i \u00fd ch\u1ecdn nhanh cho \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam.<\/p>\n","protected":false},"author":7,"featured_media":1006,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1664","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\/1664","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=1664"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1664\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1006"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}