{"id":1440,"date":"2025-12-17T12:35:19","date_gmt":"2025-12-17T05:35:19","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/tieu-chuan-gb-cho-inox-huong-dan-mua-hang-nhap-khau-chuan-xac\/"},"modified":"2025-12-17T12:35:19","modified_gmt":"2025-12-17T05:35:19","slug":"tieu-chuan-gb-cho-inox-huong-dan-mua-hang-nhap-khau-chuan-xac","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/tieu-chuan-gb-cho-inox-huong-dan-mua-hang-nhap-khau-chuan-xac\/","title":{"rendered":"Ti\u00eau chu\u1ea9n GB cho inox: h\u01b0\u1edbng d\u1eabn mua h\u00e0ng nh\u1eadp kh\u1ea9u chu\u1ea9n x\u00e1c"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-tieu-chuan-gb-la-gi-phan-biet-gb-va-gbt\">Ti\u00eau chu\u1ea9n GB l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t GB v\u00e0 GB\/T<\/a><\/li>\n<li><a href=\"#toc-1-cac-tieu-chuan-gb-quan-trong-cho-inox-nhap-khau\">C\u00e1c ti\u00eau chu\u1ea9n GB quan tr\u1ecdng cho inox nh\u1eadp kh\u1ea9u<\/a><\/li>\n<li><a href=\"#toc-2-cach-doc-ten-mac-gb-va-doi-chieu-voi-astmjis\">C\u00e1ch \u0111\u1ecdc t\u00ean m\u00e1c GB v\u00e0 \u0111\u1ed1i chi\u1ebfu v\u1edbi ASTM\/JIS<\/a><\/li>\n<li><a href=\"#toc-3-cac-yeu-cau-ky-thuat-chinh-theo-gb\">C\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ch\u00ednh theo GB<\/a><\/li>\n<li><a href=\"#toc-4-so-sanh-nhanh-gb-astm-jis\">So s\u00e1nh nhanh GB \u2013 ASTM \u2013 JIS<\/a><\/li>\n<li><a href=\"#toc-5-ho-so-chat-luong-khi-nhap-inox-trung-quoc-co-cqmtc\">H\u1ed3 s\u01a1 ch\u1ea5t l\u01b0\u1ee3ng khi nh\u1eadp inox Trung Qu\u1ed1c: CO, CQ\/MTC<\/a><\/li>\n<li><a href=\"#toc-6-checklist-kiem-tra-hang-thuc-te-theo-gb\">Checklist ki\u1ec3m tra h\u00e0ng th\u1ef1c t\u1ebf theo GB<\/a><\/li>\n<li><a href=\"#toc-7-rui-ro-thuong-gap-va-cach-phong-tranh\">R\u1ee7i ro th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ph\u00f2ng tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-8-nha-maythuong-hieu-gb-uy-tin-thuong-gap-tai-viet-n\">Nh\u00e0 m\u00e1y\/Th\u01b0\u01a1ng hi\u1ec7u GB uy t\u00edn th\u01b0\u1eddng g\u1eb7p t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-9-goi-y-quy-cach-dat-hang-mau-tham-khao\">G\u1ee3i \u00fd quy c\u00e1ch \u0111\u1eb7t h\u00e0ng m\u1eabu (tham kh\u1ea3o)<\/a><\/li>\n<li><a href=\"#toc-10-nen-chon-gb-hay-astmjis\">N\u00ean ch\u1ecdn GB hay ASTM\/JIS?<\/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>Inox theo ti\u00eau chu\u1ea9n GB (Trung Qu\u1ed1c) chi\u1ebfm t\u1ef7 tr\u1ecdng l\u1edbn trong ngu\u1ed3n cung nh\u1eadp kh\u1ea9u c\u1ee7a Vi\u1ec7t Nam. \u0110\u1ec3 mua \u0111\u00fang ch\u1ea5t l\u01b0\u1ee3ng, b\u1ea1n c\u1ea7n n\u1eafm v\u1eefng b\u1ed9 ti\u00eau chu\u1ea9n GB\/T \u00e1p d\u1ee5ng cho t\u1eebng d\u1ea1ng s\u1ea3n ph\u1ea9m, c\u00e1ch quy \u0111\u1ed5i m\u00e1c v\u1edbi ASTM\/JIS, c\u00e1ch \u0111\u1ecdc MTC\/CO\/CQ v\u00e0 quy tr\u00ecnh ki\u1ec3m tra th\u1ef1c t\u1ebf. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u00e0 th\u1ef1c t\u1ebf \u0111\u1ec3 k\u1ef9 s\u01b0, nh\u00e0 th\u1ea7u, ch\u1ee7 x\u01b0\u1edfng ra quy\u1ebft \u0111\u1ecbnh ch\u00ednh x\u00e1c.<\/p>\n<h2 id=\"toc-0-tieu-chuan-gb-la-gi-phan-biet-gb-va-gbt\">Ti\u00eau chu\u1ea9n GB l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t GB v\u00e0 GB\/T<\/h2>\n<p>&#8211; GB: Ti\u00eau chu\u1ea9n qu\u1ed1c gia b\u1eaft bu\u1ed9c c\u1ee7a Trung Qu\u1ed1c (Guobiao).<br \/>\n&#8211; GB\/T: Ti\u00eau chu\u1ea9n qu\u1ed1c gia d\u1ea1ng \u201ckhuy\u1ebfn ngh\u1ecb\u201d (Recommended). Trong l\u0129nh v\u1ef1c inox, ph\u1ea7n l\u1edbn ti\u00eau chu\u1ea9n l\u00e0 GB\/T v\u00e0 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 m\u00e1y l\u1edbn \u00e1p d\u1ee5ng nh\u01b0 chu\u1ea9n k\u1ef9 thu\u1eadt h\u1ee3p \u0111\u1ed3ng.<br \/>\n&#8211; C\u01a1 quan ban h\u00e0nh\/qu\u1ea3n l\u00fd: SAC (Standardization Administration of China).<\/p>\n<h2 id=\"toc-1-cac-tieu-chuan-gb-quan-trong-cho-inox-nhap-khau\">C\u00e1c ti\u00eau chu\u1ea9n GB quan tr\u1ecdng cho inox nh\u1eadp kh\u1ea9u<\/h2>\n<h3>B\u1ea3ng m\u00e3 m\u00e1c v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/h3>\n<p>&#8211; GB\/T 20878: Ti\u00eau chu\u1ea9n v\u1ec1 m\u00e1c th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 nhi\u1ec7t b\u1ec1n \u2013 quy \u0111\u1ecbnh t\u00ean m\u00e1c ki\u1ec3u 06Cr19Ni10, 022Cr17Ni12Mo2, v.v. c\u00f9ng th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111i\u1ec3n h\u00ecnh.<\/p>\n<h3>T\u1ea5m\/ru\u0301l (sheet, coil, plate)<\/h3>\n<p>&#8211; GB\/T 3280: Th\u00e9p kh\u00f4ng g\u1ec9 c\u00e1n ngu\u1ed9i d\u1ea1ng t\u1ea5m, l\u00e1 v\u00e0 d\u1ea3i. Quy \u0111\u1ecbnh b\u1ec1 m\u1eb7t (2B, BA, HL, No.4\u2026), dung sai, c\u01a1 t\u00ednh, ph\u01b0\u01a1ng ph\u00e1p th\u1eed.<br \/>\n&#8211; GB\/T 4237: Th\u00e9p kh\u00f4ng g\u1ec9 c\u00e1n n\u00f3ng d\u1ea1ng t\u1ea5m, l\u00e1 v\u00e0 d\u1ea3i (No.1).<br \/>\n&#8211; GB\/T 24511: T\u1ea5m\/d\u1ea3i inox d\u00f9ng cho thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p l\u1ef1c (y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t h\u01a1n v\u1ec1 c\u01a1 t\u00ednh, ki\u1ec3m tra).<\/p>\n<h3>\u1ed0ng<\/h3>\n<p>&#8211; GB\/T 12771: \u1ed0ng h\u00e0n inox v\u1eadn chuy\u1ec3n ch\u1ea5t l\u1ecfng (h\u00e0n TIG\/laser, th\u1eed \u00e1p\/h\u1ec7 s\u1ed1 k\u00edn).<br \/>\n&#8211; GB\/T 14976: \u1ed0ng inox \u0111\u00fac li\u1ec1n (seamless) v\u1eadn chuy\u1ec3n ch\u1ea5t l\u1ecfng.<br \/>\n&#8211; GB\/T 13296: \u1ed0ng inox cho n\u1ed3i h\u01a1i v\u00e0 b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t.<\/p>\n<h3>Th\u00e9p thanh\/d\u00e2y<\/h3>\n<p>&#8211; GB\/T 1220: Th\u00e9p thanh kh\u00f4ng g\u1ec9 (round bar, hex bar).<br \/>\n&#8211; GB\/T 4356, GB\/T 4241 (t\u00f9y \u1ee9ng d\u1ee5ng d\u00e2y, l\u00f2 xo\u2026).<\/p>\n<p>G\u1ee3i \u00fd: Khi \u0111\u1eb7t h\u00e0ng, lu\u00f4n ghi c\u1ee5 th\u1ec3 m\u00e3 ti\u00eau chu\u1ea9n (v\u00ed d\u1ee5: \u201cGB\/T 3280\u201d), m\u00e1c theo GB\/T 20878, tr\u1ea1ng th\u00e1i c\u00e1n (CR\/HR), ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (2B\/BA\/No.1), dung sai v\u00e0 y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m.<\/p>\n<h2 id=\"toc-2-cach-doc-ten-mac-gb-va-doi-chieu-voi-astmjis\">C\u00e1ch \u0111\u1ecdc t\u00ean m\u00e1c GB v\u00e0 \u0111\u1ed1i chi\u1ebfu v\u1edbi ASTM\/JIS<\/h2>\n<p>T\u00ean m\u00e1c GB m\u1edbi c\u00f3 d\u1ea1ng XxCrYyNiZz\u2026 th\u1ec3 hi\u1ec7n h\u00e0m l\u01b0\u1ee3ng nguy\u00ean t\u1ed1; v\u00ed d\u1ee5 06Cr19Ni10 kho\u1ea3ng C~0.06%, Cr~19%, Ni~10%.<br \/>\n&#8211; 06Cr19Ni10 \u2248 ASTM 304 (A240), JIS SUS304<br \/>\n&#8211; 022Cr19Ni10 \u2248 ASTM 304L, JIS SUS304L<br \/>\n&#8211; 06Cr17Ni12Mo2 \u2248 ASTM 316, JIS SUS316<br \/>\n&#8211; 022Cr17Ni12Mo2 \u2248 ASTM 316L, JIS SUS316L<br \/>\n&#8211; 10Cr17 \u2248 ASTM 430, JIS SUS430 (ferritic)<br \/>\n&#8211; 12Cr17Mn6Ni5N \u2248 ASTM\/UNS S20100 (201) \u2013 l\u01b0u \u00fd bi\u1ebfn th\u1ec3 200-series c\u00f3 bi\u00ean \u0111\u1ed9 Ni r\u1ed9ng, d\u1ec5 kh\u00e1c bi\u1ec7t t\u00ednh n\u0103ng<\/p>\n<p>L\u1eddi khuy\u00ean:<br \/>\n&#8211; Ghi \u201c\u0111\u1ed3ng th\u1eddi\u201d c\u1ea3 k\u00fd hi\u1ec7u GB v\u00e0 ASTM\/JIS trong h\u1ee3p \u0111\u1ed3ng \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn. V\u00ed d\u1ee5: \u201cGB\/T 3280, 06Cr19Ni10 (equiv. ASTM 304)\u201d.<br \/>\n&#8211; V\u1edbi 200-series, quy \u0111\u1ecbnh th\u00eam h\u00e0m l\u01b0\u1ee3ng Ni, Mn t\u1ed1i thi\u1ec3u v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc t\u1ed1i thi\u1ec3u nh\u1eb1m ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h2 id=\"toc-3-cac-yeu-cau-ky-thuat-chinh-theo-gb\">C\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ch\u00ednh theo GB<\/h2>\n<h3>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc (v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh)<\/h3>\n<p>&#8211; 06Cr19Ni10 (304): C \u2264 0.07; Cr 18.0\u201320.0; Ni 8.0\u201310.5; Mn \u2264 2.0; P \u2264 0.045; S \u2264 0.030; N \u2264 0.10.<br \/>\n&#8211; 022Cr17Ni12Mo2 (316L): C \u2264 0.03; Cr 16.0\u201318.0; Ni 10.0\u201314.0; Mo 2.0\u20133.0; Mn \u2264 2.0; P\/S t\u01b0\u01a1ng t\u1ef1 304.<br \/>\n&#8211; 10Cr17 (430): C \u2264 0.12; Cr 16.0\u201318.0; Ni g\u1ea7n nh\u01b0 0; c\u00f3 th\u1ec3 th\u00eam Ti\/Nb \u1ed5n \u0111\u1ecbnh h\u00f3a (t\u00f9y bi\u1ebfn th\u1ec3).<br \/>\n(Gi\u1edbi h\u1ea1n c\u1ee5 th\u1ec3 tham chi\u1ebfu GB\/T 20878; c\u00f3 th\u1ec3 c\u00f3 ch\u00eanh sai t\u00f9y phi\u00ean b\u1ea3n c\u1eadp nh\u1eadt c\u1ee7a ti\u00eau chu\u1ea9n.)<\/p>\n<h3>C\u01a1 t\u00ednh tham kh\u1ea3o (t\u1ea5m c\u00e1n ngu\u1ed9i)<\/h3>\n<p>&#8211; 304: Tensile \u2265 520 MPa; Yield \u2265 205 MPa; \u0110\u1ed9 gi\u00e3n d\u00e0i \u2265 40% (L0=50 mm).<br \/>\n&#8211; 316L: Tensile \u2265 480 MPa; Yield \u2265 170\u2013200 MPa; \u0110\u1ed9 gi\u00e3n d\u00e0i \u2265 40%.<br \/>\n&#8211; 430: Tensile \u2265 450 MPa; Yield \u2265 205 MPa; \u0110\u1ed9 gi\u00e3n d\u00e0i \u2265 22\u201325%.<br \/>\n(L\u01b0u \u00fd: gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 ph\u1ee5 thu\u1ed9c chi\u1ec1u d\u00e0y, tr\u1ea1ng th\u00e1i \u1ee7; ki\u1ec3m theo t\u1eebng ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m GB\/T 3280, 4237.)<\/p>\n<h3>Dung sai k\u00edch th\u01b0\u1edbc v\u00e0 b\u1ec1 m\u1eb7t<\/h3>\n<p>&#8211; Chi\u1ec1u d\u00e0y: GB\/T 3280 quy \u0111\u1ecbnh dung sai theo d\u1ea3i b\u1ec1 d\u00e0y; v\u1edbi 2B \u2264 2.0 mm th\u01b0\u1eddng \u00b10.03\u20130.05 mm (tham kh\u1ea3o nh\u00e0 m\u00e1y).<br \/>\n&#8211; B\u1ec1 m\u1eb7t ph\u1ed5 bi\u1ebfn: No.1 (HR), 2B (CR m\u1edd), BA (CR b\u00f3ng \u1ee7 s\u00e1ng), HL (Hairline), No.4. Y\u00eau c\u1ea7u phim PVC b\u1ea3o v\u1ec7 khi gia c\u00f4ng trang tr\u00ed.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc th\u01b0\u01a1ng m\u1ea1i: 1219 mm (4 ft) v\u00e0 1500 mm; chi\u1ec1u d\u00e0i 2438 mm (8 ft), 3000 mm, ho\u1eb7c c\u1eaft theo y\u00eau c\u1ea7u; coil ID 508\/610 mm.<\/p>\n<h2 id=\"toc-4-so-sanh-nhanh-gb-astm-jis\">So s\u00e1nh nhanh GB \u2013 ASTM \u2013 JIS<\/h2>\n<p>&#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc: R\u1ea5t t\u01b0\u01a1ng \u0111\u1ed3ng; ph\u1ea1m vi Ni\/Cr c\u00f3 th\u1ec3 ch\u00eanh nh\u1eb9. ASTM A240 v\u00e0 JIS G4305\/G4304 l\u00e0 \u0111\u1ed1i chu\u1ea9n ph\u1ed5 bi\u1ebfn \u0111\u1ec3 \u201csong ti\u00eau chu\u1ea9n\u201d (dual certified).<br \/>\n&#8211; C\u01a1 t\u00ednh\/ph\u01b0\u01a1ng ph\u00e1p th\u1eed: T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1ec1 b\u1ea3n ch\u1ea5t (k\u00e9o, u\u1ed1n, va \u0111\u1eadp khi y\u00eau c\u1ea7u). M\u1ee9c y\u00eau c\u1ea7u c\u00f3 th\u1ec3 kh\u00e1c \u0111\u00f4i ch\u00fat theo chi\u1ec1u d\u00e0y v\u00e0 tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n.<br \/>\n&#8211; B\u1ec1 m\u1eb7t\/dung sai: Danh m\u1ee5c k\u00fd hi\u1ec7u b\u1ec1 m\u1eb7t d\u00f9ng chung (2B, BA\u2026); dung sai c\u1ea7n so k\u1ef9 t\u1eebng b\u1ea3ng ti\u00eau chu\u1ea9n.<br \/>\n&#8211; Th\u1ef1c t\u1ebf th\u01b0\u01a1ng m\u1ea1i: Nhi\u1ec1u nh\u00e0 m\u00e1y Trung Qu\u1ed1c (TISCO, BAOSTEEL, TSINGSHAN\u2026) xu\u1ea5t MTC ghi \u0111\u1ed3ng th\u1eddi GB\/T v\u00e0 ASTM\/JIS \u0111\u1ec3 thu\u1eadn l\u1ee3i th\u00f4ng quan v\u00e0 ki\u1ec3m ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h2 id=\"toc-5-ho-so-chat-luong-khi-nhap-inox-trung-quoc-co-cqmtc\">H\u1ed3 s\u01a1 ch\u1ea5t l\u01b0\u1ee3ng khi nh\u1eadp inox Trung Qu\u1ed1c: CO, CQ\/MTC<\/h2>\n<p>&#8211; MTC (Mill Test Certificate) theo EN 10204 3.1: T\u00e0i li\u1ec7u c\u1ed1t l\u00f5i th\u1ec3 hi\u1ec7n ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng (v\u00ed d\u1ee5 GB\/T 3280), m\u00e1c (06Cr19Ni10), l\u00f4 luy\u1ec7n (Heat No.), ph\u00e2n t\u00edch h\u00f3a h\u1ecdc th\u1ef1c \u0111o, c\u01a1 t\u00ednh, k\u00edch th\u01b0\u1edbc, b\u1ec1 m\u1eb7t, tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n, ch\u1eef k\u00fd QA\/QC nh\u00e0 m\u00e1y. Ki\u1ec3m tra MTC kh\u1edbp 100% v\u1edbi nh\u00e3n ki\u1ec7n\/th\u00f9ng\/tem cu\u1ed9n.<br \/>\n&#8211; CQ (Certificate of Quality): \u1ede th\u1ef1c t\u1ebf nhi\u1ec1u nh\u00e0 m\u00e1y d\u00f9ng ch\u00ednh MTC l\u00e0m CQ.<br \/>\n&#8211; CO (Certificate of Origin): \u0110\u1ec3 h\u01b0\u1edfng \u01b0u \u0111\u00e3i thu\u1ebf theo ACFTA, y\u00eau c\u1ea7u CO Form E. Ki\u1ec3m th\u00f4ng tin ng\u01b0\u1eddi b\u00e1n, nh\u00e0 s\u1ea3n xu\u1ea5t, m\u00f4 t\u1ea3 h\u00e0ng, HS code, tr\u1ecdng l\u01b0\u1ee3ng, s\u1ed1 ki\u1ec7n kh\u1edbp Invoice\/Packing List.<br \/>\n&#8211; Ch\u1ee9ng nh\u1eadn ph\u00f2ng th\u00ed nghi\u1ec7m: N\u1ebfu c\u1ea7n th\u1eed \u0111\u1ed9c l\u1eadp, \u01b0u ti\u00ean k\u1ebft qu\u1ea3 t\u1eeb ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c CNAS c\u00f4ng nh\u1eadn (China National Accreditation Service).<\/p>\n<h2 id=\"toc-6-checklist-kiem-tra-hang-thuc-te-theo-gb\">Checklist ki\u1ec3m tra h\u00e0ng th\u1ef1c t\u1ebf theo GB<\/h2>\n<p>1) Ki\u1ec3m h\u1ed3 s\u01a1:<br \/>\n&#8211; MTC: C\u00f3 ti\u00eau chu\u1ea9n \u0111\u00fang (GB\/T 3280, 4237, 12771\u2026), \u0111\u00fang m\u00e1c (06Cr19Ni10\u2026), Heat No., EN 10204 3.1, ch\u1ec9 ti\u00eau h\u00f3a h\u1ecdc\/c\u01a1 t\u00ednh \u0111\u1ea1t.<br \/>\n&#8211; CO Form E, Invoice, Packing List: Kh\u1edbp nh\u00e0 s\u1ea3n xu\u1ea5t, m\u00f4 t\u1ea3, s\u1ed1 l\u01b0\u1ee3ng, tr\u1ecdng l\u01b0\u1ee3ng.<br \/>\n2) Ki\u1ec3m bao g\u00f3i v\u00e0 d\u1ea5u hi\u1ec7u:<br \/>\n&#8211; Nh\u00e3n ki\u1ec7n: M\u00e3 ti\u00eau chu\u1ea9n, m\u00e1c, k\u00edch th\u01b0\u1edbc, b\u1ec1 m\u1eb7t, s\u1ed1 cu\u1ed9n\/t\u1ea5m, Heat\/Coil No., t\u00ean nh\u00e0 m\u00e1y (TISCO\/BAOSTEEL\/TSINGSHAN\u2026).<br \/>\n&#8211; T\u00ecnh tr\u1ea1ng \u0111\u00f3ng g\u00f3i: Phim PVC, gi\u1ea5y d\u1ea7u, \u0111ai th\u00e9p, t\u1ea5m b\u1ea3o v\u1ec7 c\u1ea1nh; ch\u1ed1ng \u1ea9m gi\u00f3 mu\u1ed1i.<br \/>\n3) Ki\u1ec3m k\u00edch th\u01b0\u1edbc\/dung sai:<br \/>\n&#8211; D\u00f9ng th\u01b0\u1edbc c\u1eb7p\/d\u1ee5ng c\u1ee5 \u0111\u00e3 hi\u1ec7u chu\u1ea9n \u0111o chi\u1ec1u d\u00e0y\/\u0111\u1ed9 ph\u1eb3ng\/\u0111\u1ed9 cong; v\u1edbi coil, \u0111o c\u1ea3 \u0111\u1ea7u\/cu\u1ed1i cu\u1ed9n; x\u00e1c su\u1ea5t ki\u1ec3m t\u1ed1i thi\u1ec3u AQL 2.5 cho l\u00f4 l\u1edbn.<br \/>\n4) Ki\u1ec3m b\u1ec1 m\u1eb7t:<br \/>\n&#8211; Soi v\u1ebft x\u01b0\u1edbc, g\u1ec9, r\u1ed7, v\u1ebft \u0111en; v\u1edbi BA\/HL\/No.4 ki\u1ec3m \u0111\u1ed3ng \u0111\u1ec1u v\u00e2n v\u00e0 \u0111\u1ed9 b\u00f3ng; ki\u1ec3m l\u1edbp phim b\u1ea3o v\u1ec7.<br \/>\n5) Ki\u1ec3m PMI (Positive Material Identification):<br \/>\n&#8211; D\u00f9ng XRF c\u1ea7m tay ki\u1ec3m Cr\/Ni\/Mo. 304: Cr ~18\u201320, Ni ~8\u201310.5; 316L: th\u00eam Mo ~2; 430: Cr ~16\u201318, Ni r\u1ea5t th\u1ea5p. Tr\u00e1nh d\u00f9ng \u201cnam ch\u00e2m\u201d l\u00e0m ti\u00eau ch\u00ed duy nh\u1ea5t.<br \/>\n6) V\u1edbi \u1ed1ng:<br \/>\n&#8211; Ki\u1ec3m \u0111\u01b0\u1eddng h\u00e0n (\u0111\u1ed1i \u1ed1ng h\u00e0n): l\u00e0m s\u1ea1ch n\u1ed9i\/ngo\u1ea1i, m\u00e0i ph\u1eb3ng; th\u1eed \u00e1p\/hydro 100% ho\u1eb7c Eddy Current nh\u01b0 MTC ghi; \u0111\u1ed9 oval, \u0111\u1ed9 d\u00e0y th\u00e0nh; th\u1eed r\u00f2 r\u1ec9.<\/p>\n<h2 id=\"toc-7-rui-ro-thuong-gap-va-cach-phong-tranh\">R\u1ee7i ro th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ph\u00f2ng tr\u00e1nh<\/h2>\n<p>&#8211; 201 \u0111\u1ed9i l\u1ed1t 304: 201 c\u00f3 Ni th\u1ea5p, Mn cao \u2013 d\u1ec5 nhi\u1ec5m t\u1eeb nh\u1eb9, ch\u1ed1ng g\u1ec9 k\u00e9m h\u01a1n. Ph\u00f2ng tr\u00e1nh: y\u00eau c\u1ea7u Ni t\u1ed1i thi\u1ec3u v\u00e0 PMI.<br \/>\n&#8211; 304 h\u00fat nam ch\u00e2m nh\u1eb9: Do bi\u1ebfn c\u1ee9ng ngu\u1ed9i sinh martensite ho\u1eb7c c\u00f3 ferrite d\u01b0 \u2013 kh\u00f4ng \u0111\u1ed3ng ngh\u0129a \u201cgi\u1ea3\u201d. K\u1ebft lu\u1eadn b\u1eb1ng PMI\/\u0111\u1ecbnh l\u01b0\u1ee3ng h\u00f3a h\u1ecdc.<br \/>\n&#8211; D\u01b0\u1edbi chu\u1ea9n \u0111\u1ed9 d\u00e0y: M\u1ed9t s\u1ed1 l\u00f4 th\u1ef1c t\u1ebf \u00e2m dung sai ngo\u00e0i ph\u1ea1m vi. Gi\u1ea3i ph\u00e1p: quy \u0111\u1ecbnh dung sai r\u00f5 trong h\u1ee3p \u0111\u1ed3ng (v\u00ed d\u1ee5 \u00b10.03 mm cho 1.5 mm 2B) v\u00e0 \u0111o AQL.<br \/>\n&#8211; B\u1ec1 m\u1eb7t BA\/HL kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t: Y\u00eau c\u1ea7u m\u1eabu duy\u1ec7t tr\u01b0\u1edbc; ghi r\u00f5 ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn\/reject.<br \/>\n&#8211; H\u1ed3 s\u01a1 sai l\u1ec7ch: Ch\u1ec9 nh\u1eadp c\u1ee7a nh\u00e0 m\u00e1y\/mill v\u00e0 th\u01b0\u01a1ng hi\u1ec7u c\u00f3 ti\u1ebfng; \u0111\u1ed1i chi\u1ebfu Heat\/Coil No. tr\u00ean MTC v\u1edbi nh\u00e3n ki\u1ec7n.<\/p>\n<h2 id=\"toc-8-nha-maythuong-hieu-gb-uy-tin-thuong-gap-tai-viet-n\">Nh\u00e0 m\u00e1y\/Th\u01b0\u01a1ng hi\u1ec7u GB uy t\u00edn th\u01b0\u1eddng g\u1eb7p t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>&#8211; TISCO (Taiyuan Iron &#038; Steel)<br \/>\n&#8211; BAOSTEEL\/LISCO (Guangzhou\/Lianzhong Stainless)<br \/>\n&#8211; TSINGSHAN\/DESHENG (Qingshan Group)<br \/>\n&#8211; JISCO (Jiuquan), Yongjin, Hongwang (CR finish)<br \/>\nG\u1ee3i \u00fd: \u01afu ti\u00ean MTC b\u1ea3n g\u1ed1c, tem laser ho\u1eb7c in n\u1ed5i tr\u00ean m\u00e9p t\u1ea5m\/cu\u1ed9n th\u1ec3 hi\u1ec7n nh\u00e0 m\u00e1y + ti\u00eau chu\u1ea9n + m\u00e1c.<\/p>\n<h2 id=\"toc-9-goi-y-quy-cach-dat-hang-mau-tham-khao\">G\u1ee3i \u00fd quy c\u00e1ch \u0111\u1eb7t h\u00e0ng m\u1eabu (tham kh\u1ea3o)<\/h2>\n<p>&#8211; T\u1ea5m 304 (c\u00e1n ngu\u1ed9i): \u201cGB\/T 3280, 06Cr19Ni10 (equiv. ASTM A240 304), 2B, 1.5 x 1219 x 2438 mm, dung sai \u0111\u1ed9 d\u00e0y \u00b10.03 mm, phim PVC 1 m\u1eb7t, EN 10204 3.1 MTC, Ni \u2265 8.0%.\u201d<br \/>\n&#8211; T\u1ea5m 316L (c\u00e1n n\u00f3ng): \u201cGB\/T 4237, 022Cr17Ni12Mo2 (ASTM A240 316L), No.1, 8 x 1500 x 6000 mm, test c\u01a1 t\u00ednh theo ti\u00eau chu\u1ea9n, MTC 3.1.\u201d<br \/>\n&#8211; \u1ed0ng h\u00e0n 304: \u201cGB\/T 12771, 06Cr19Ni10 (ASTM A312 TP304 dual cert.), \u03c638.1 x 1.5 mm, pickling &#038; passivation, hydrotest 100%, MTC 3.1.\u201d<br \/>\n&#8211; Thanh tr\u00f2n 304: \u201cGB\/T 1220, 06Cr19Ni10, \u03c620 mm, T\u1ed5 ch\u1ee9c \u1ee7, ki\u1ec3m UT theo y\u00eau c\u1ea7u, MTC 3.1.\u201d<\/p>\n<h2 id=\"toc-10-nen-chon-gb-hay-astmjis\">N\u00ean ch\u1ecdn GB hay ASTM\/JIS?<\/h2>\n<p>&#8211; N\u1ebfu gia c\u00f4ng trong n\u01b0\u1edbc, y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt th\u00f4ng d\u1ee5ng: GB\/T ho\u00e0n to\u00e0n \u0111\u00e1p \u1ee9ng khi \u0111i k\u00e8m MTC minh b\u1ea1ch.<br \/>\n&#8211; N\u1ebfu s\u1ea3n ph\u1ea9m ph\u1ea3i xu\u1ea5t kh\u1ea9u\/quy chu\u1ea9n \u0111\u1eb7c th\u00f9: y\u00eau c\u1ea7u \u201cdual standard\u201d (GB\/T + ASTM A240\/A312 ho\u1eb7c JIS G4304\/G4305) \u0111\u1ec3 d\u1ec5 t\u01b0\u01a1ng th\u00edch h\u1ed3 s\u01a1.<br \/>\n&#8211; V\u1edbi thi\u1ebft b\u1ecb \u00e1p l\u1ef1c: \u01b0u ti\u00ean GB\/T 24511 ho\u1eb7c ASTM\/JIS t\u01b0\u01a1ng \u0111\u01b0\u01a1ng; tu\u00e2n th\u1ee7 ph\u00e1p l\u00fd Vi\u1ec7t Nam \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u ch\u1ecbu \u00e1p l\u1ef1c.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; GB\/T 3280 (Cold-rolled stainless steel plate, sheet and strip) v\u00e0 GB\/T 4237 (Hot-rolled stainless steel plate, sheet and strip) \u2013 SAC, Standardization Administration of China.<br \/>\n&#8211; GB\/T 20878 (Stainless and heat-resistant steel grades and chemical composition) \u2013 SAC.<br \/>\n&#8211; GB\/T 12771 (Welded stainless steel pipes for fluid transport), GB\/T 14976 (Seamless stainless steel pipes) \u2013 SAC.<br \/>\n&#8211; ASTM A240\/A240M \u2013 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications \u2013 ASTM International (astm.org).<br \/>\n&#8211; JIS G4304\/G4305 \u2013 Hot-\/Cold-rolled stainless steel plate, sheet and strip \u2013 Japanese Standards Association.<br \/>\n&#8211; EN 10204 \u2013 Metallic products \u2013 Types of inspection documents \u2013 CEN.<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>Mu\u1ed1n mua inox nh\u1eadp kh\u1ea9u theo ti\u00eau chu\u1ea9n Trung Qu\u1ed1c m\u1ed9t c\u00e1ch an to\u00e0n, b\u1ea1n c\u1ea7n: x\u00e1c \u0111\u1ecbnh \u0111\u00fang ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m GB\/T \u0111i k\u00e8m m\u00e1c theo GB\/T 20878; \u0111\u1ed1i chi\u1ebfu v\u1edbi ASTM\/JIS khi c\u1ea7n; ki\u1ec3m nghi\u00eam ng\u1eb7t MTC (EN 10204 3.1) v\u00e0 CO Form E; th\u1ef1c hi\u1ec7n PMI v\u00e0 ki\u1ec3m dung sai\/b\u1ec1 m\u1eb7t theo checklist. L\u1ef1a ch\u1ecdn nh\u00e0 m\u00e1y uy t\u00edn (TISCO, BAOSTEEL, TSINGSHAN\u2026) v\u00e0 n\u00eau r\u00f5 dung sai, b\u1ec1 m\u1eb7t, y\u00eau c\u1ea7u Ni\/Mo t\u1ed1i thi\u1ec3u trong h\u1ee3p \u0111\u1ed3ng s\u1ebd gi\u00fap h\u1ea1n ch\u1ebf r\u1ee7i ro nh\u01b0 h\u00e0ng d\u01b0\u1edbi chu\u1ea9n hay nh\u1ea7m m\u00e1c. Th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1c b\u01b0\u1edbc tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 khai th\u00e1c t\u1ed1i \u0111a l\u1ee3i th\u1ebf gi\u00e1 v\u00e0 ngu\u1ed3n cung c\u1ee7a inox theo ti\u00eau chu\u1ea9n GB m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng k\u1ef9 thu\u1eadt cho c\u00f4ng tr\u00ecnh v\u00e0 s\u1ea3n ph\u1ea9m.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ti\u00eau chu\u1ea9n, quy c\u00e1ch v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t? Li\u00ean h\u1ec7 Inox Cuong Thinh \u2013 Hotline: 0343.417.281 \u2013 Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u GB\/T 3280, 4237, 12771 v\u00e0 m\u00e3 06Cr19Ni10 (304), 022Cr17Ni12Mo2 (316L). C\u00e1ch \u0111\u1ecdc MTC, so s\u00e1nh ASTM\/JIS, checklist khi mua inox Trung Qu\u1ed1c.<\/p>\n","protected":false},"author":7,"featured_media":1070,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1440","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\/1440","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=1440"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1440\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1070"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}