{"id":24493,"date":"2026-01-15T15:26:07","date_gmt":"2026-01-15T08:26:07","guid":{"rendered":"https:\/\/worldsteelgroup.com\/?p=24493"},"modified":"2026-01-15T15:26:07","modified_gmt":"2026-01-15T08:26:07","slug":"toan-canh-thep-weathering-toan-cau-vat-lieu-tieu-chuan-tai-cac-quoc-gia","status":"publish","type":"post","link":"https:\/\/worldsteelgroup.com\/vi\/toan-canh-thep-weathering-toan-cau-vat-lieu-tieu-chuan-tai-cac-quoc-gia\/","title":{"rendered":"TO\u00c0N C\u1ea2NH TH\u00c9P WEATHERING TO\u00c0N C\u1ea6U: V\u1eacT LI\u1ec6U & TI\u00caU CHU\u1ea8N T\u1ea0I C\u00c1C QU\u1ed0C GIA"},"content":{"rendered":"

1. Kh\u00e1i qu\u00e1t v\u1ec1 th\u00e9p ch\u1ecbu th\u1eddi ti\u1ebft (weathering steel)<\/strong><\/h2>\n

Th\u00e9p ch\u1ecbu th\u1eddi ti\u1ebft (weathering steel)<\/strong> l\u00e0 nh\u00f3m th\u00e9p h\u1ee3p kim th\u1ea5p c\u00f3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kh\u00ed quy\u1ec3n nh\u1edd th\u00e0nh ph\u1ea7n h\u1ee3p kim \u0111\u1eb7c bi\u1ec7t (th\u01b0\u1eddng c\u00f3 Cu \u2013 \u0111\u1ed3ng, Cr \u2013 crom, Ni \u2013 niken, Si \u2013 silic, P \u2013 ph\u1ed1tpho). Khi ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi m\u00f4i tr\u01b0\u1eddng, th\u00e9p n\u00e0y h\u00ecnh th\u00e0nh m\u1ed9t l\u1edbp oxit b\u00e1m ch\u1eb7t g\u1ecdi l\u00e0 patina<\/em> gi\u00fap gi\u1ea3m t\u1ed1c \u0111\u1ed9 oxy h\u00f3a so v\u1edbi th\u00e9p carbon th\u01b0\u1eddng.<\/p>\n

L\u1edbp patina n\u00e0y l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c chu k\u1ef3 \u01b0\u1edbt v\u00e0 kh\u00f4 t\u1ef1 nhi\u00ean v\u00e0 ch\u00ednh t\u00ednh ch\u1ea5t n\u00e0y l\u00e0m cho weathering steel \u00edt c\u1ea7n b\u1ea3o d\u01b0\u1ee1ng, b\u1ec1n l\u00e2u h\u01a1n trong m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi<\/strong>. Tuy nhi\u00ean, v\u1eadt li\u1ec7u n\u00e0y \u0111\u00f2i h\u1ecfi \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu ph\u00f9 h\u1ee3p (wet\u2013dry cycles) v\u00e0 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ph\u00f9 h\u1ee3p n\u1ebfu m\u00f4i tr\u01b0\u1eddng qu\u00e1 \u1ea9m \u01b0\u1edbt ho\u1eb7c mu\u1ed1i bi\u1ec3n qu\u00e1 cao.<\/p>\n

C\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c nhau tr\u00ean th\u1ebf gi\u1edbi ch\u1ec9 kh\u00e1c nhau \u1edf th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc t\u1ed1i thi\u1ec3u, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m c\u1ee5 th\u1ec3<\/strong>, nh\u01b0ng \u0111\u1ec1u h\u01b0\u1edbng t\u1edbi vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kh\u00ed quy\u1ec3n t\u01b0\u01a1ng t\u1ef1<\/strong>, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho k\u1ebft c\u1ea5u, c\u1ea7u, m\u1eb7t ti\u1ec1n ki\u1ebfn tr\u00fac\u2026<\/p>\n

2. Ti\u00eau chu\u1ea9n v\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u weathering steel theo t\u1eebng n\u01b0\u1edbc<\/strong><\/h2>\n

Australia \/ Australia & New Zealand Standards<\/strong><\/h3>\n

\u1ede \u00dac \u2013 theo ti\u00eau chu\u1ea9n AS\/NZS, weathering steel \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0 quy \u0111\u1ecbnh trong c\u00e1c quy ph\u1ea1m th\u00e9p c\u1ea5u tr\u00fac, v\u00ed d\u1ee5 nh\u01b0:<\/p>\n

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    AS\/NZS 3678:2016<\/strong> \u2013 Th\u00e9p c\u00e1n n\u00f3ng, weathering grades nh\u01b0 WR350A<\/strong>, WR350B<\/strong>, v\u00e0 bi\u1ebfn th\u1ec3 v\u1edbi L0 \/ L20 th\u1ec3 hi\u1ec7n m\u1ee9c P (ph\u1ed1tpho) kh\u00e1c nhau cho \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n v\u00e0 kh\u1ea3 n\u0103ng h\u00e0n.<\/p>\n<\/li>\n

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    AS\/NZS 1594:2002<\/strong> & AS\/NZS 1595:1998<\/strong> \u2013 Quy \u0111\u1ecbnh v\u1ec1 t\u1ea5m c\u00e1n n\u00f3ng v\u00e0 cu\u1ed9n c\u00e1n m\u1ecfng weathering steel \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n<\/li>\n

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    AS\/NZS 1554.1:2014<\/strong> \u2013 Quy \u0111\u1ecbnh h\u00e0n k\u1ebft c\u1ea5u th\u00e9p weathering.<\/p>\n<\/li>\n

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    AS 4312:2019<\/strong> \u2013 H\u01b0\u1edbng d\u1eabn ph\u00e2n v\u00f9ng \u0103n m\u00f2n kh\u00ed quy\u1ec3n \u1edf \u00dac \u0111\u1ec3 thi\u1ebft k\u1ebf weathering steel ph\u00f9 h\u1ee3p.<\/p>\n<\/li>\n<\/ul>\n

    M\u1ed9t v\u00ed d\u1ee5 s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i \u1edf \u00dac l\u00e0 Redcor\u00ae weathering steel<\/strong> c\u1ee7a BlueScope, c\u00f3 hai d\u00f2ng ch\u00ednh:<\/p>\n

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      Type A<\/em> \u2013 v\u1edbi l\u01b0\u1ee3ng P cao h\u01a1n, th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng ki\u1ebfn tr\u00fac.<\/p>\n<\/li>\n

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      Type B<\/em> \u2013 v\u1edbi l\u01b0\u1ee3ng P th\u1ea5p h\u01a1n, ph\u00f9 h\u1ee3p cho k\u1ebft c\u1ea5u ch\u1ecbu t\u1ea3i l\u1edbn nh\u01b0 c\u1ea7u.<\/p>\n<\/li>\n<\/ul>\n

      \u01afu \u0111i\u1ec3m c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y l\u00e0 cung c\u1ea5p chi ti\u1ebft v\u1ec1 quy tr\u00ecnh h\u00e0n, \u0111i\u1ec1u ki\u1ec7n \u00e1p d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu \u00dac\u2013New Zealand<\/strong> v\u00e0 ch\u00fa tr\u1ecdng \u0111\u1ebfn chi ti\u1ebft thi\u1ebft k\u1ebf, thi c\u00f4ng v\u00e0 b\u1ea3o tr\u00ec weathering structures<\/strong>.<\/p>\n

      Nh\u1eadt B\u1ea3n \u2013 JIS (Japanese Industrial Standards)<\/strong><\/h3>\n

      Nh\u1eadt B\u1ea3n c\u0169ng c\u00f3 ti\u00eau chu\u1ea9n d\u00e0nh ri\u00eang cho \u201cweather resistance steel\u201d theo JIS G3125<\/strong>:<\/p>\n

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        JIS G3125 SPA-H<\/strong> v\u00e0 SPA-C<\/strong> \u2013 \u0110\u00e2y l\u00e0 c\u00e1c m\u00e1c weathering steel t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c grade c\u1ee7a Corten v\u00e0 th\u01b0\u1eddng d\u00f9ng cho k\u1ebft c\u1ea5u, t\u00e0u h\u1ecfa, container, v.v.<\/p>\n<\/li>\n<\/ul>\n

        Ngo\u00e0i ra theo ti\u00eau chu\u1ea9n JIS G3114<\/strong> c\u00f3 c\u00e1c danh m\u1ee5c nh\u01b0:<\/p>\n

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          SMA400W\/ SMA490W\/ SMA570W<\/strong> \u2013 c\u00e1c lo\u1ea1i thi\u1ebft k\u1ebf cho c\u00e1c m\u1ee9c b\u1ec1n v\u00e0 t\u00ednh ch\u1ed1ng \u0103n m\u00f2n kh\u00e1c nhau.<\/p>\n<\/li>\n<\/ul>\n

          C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc t\u1ed1i thi\u1ec3u (yield strength, tensile strength)<\/strong>, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, \u0111\u1eb7c tr\u01b0ng cho kh\u00ed h\u1eadu Nh\u1eadt v\u1edbi nhi\u1ec1u v\u00f9ng l\u1ea1nh v\u00e0 gi\u00f3 bi\u1ec3n.<\/p>\n

          Trung Qu\u1ed1c \u2013 GB\/T Standards<\/strong><\/h3>\n

          Trung Qu\u1ed1c c\u00f3 h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n ri\u00eang trong GB\/T 4171<\/strong> v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan:<\/p>\n

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            GB\/T 4171<\/strong> \u2013 Quy \u0111\u1ecbnh \u201csuperior atmospheric corrosion resisting structural steel\u201d v\u1edbi nhi\u1ec1u m\u00e1c nh\u01b0 Q235NH, Q355NH, Q460NH, Q550NH<\/strong>\u2026<\/p>\n<\/li>\n

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            Q355GNH \/ Q295GNH<\/strong> \u2013 L\u00e0 c\u00e1c m\u00e1c weathering steel cao c\u1ea5p h\u01a1n trong h\u1ec7 GB v\u1edbi \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n \u0111\u01b0\u1ee3c n\u00e2ng cao.<\/p>\n<\/li>\n

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            C\u00e1c m\u00e1c 09CuPCrNi-A\/B theo TB ti\u00eau chu\u1ea9n railway ho\u1eb7c Q\/BQB 340 B460NQR, B480GNQR\u2026 b\u1ed5 sung cho c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt \u0111\u1eb7c th\u00f9.<\/p>\n<\/li>\n<\/ul>\n

            Trung Qu\u1ed1c th\u01b0\u1eddng quy \u0111\u1ecbnh tolerance v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 d\u00e3n d\u00e0i v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, v\u1edbi m\u1ee5c ti\u00eau kh\u1ea3 n\u0103ng ch\u1ecbu \u0103n m\u00f2n kh\u00ed quy\u1ec3n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf kh\u00e1c<\/strong>.<\/p>\n

            Hoa K\u1ef3 \u2013 ASTM \/ AISI Standards<\/strong><\/h3>\n

            M\u1ef9 l\u00e0 n\u01a1i ph\u00e1t tri\u1ec3n s\u1edbm nh\u1ea5t c\u00e1c ti\u00eau chu\u1ea9n weathering steel, \u0111\u1eb7c bi\u1ec7t l\u00e0 ASTM do ASTM International ban h\u00e0nh:<\/p>\n

            C\u00e1c ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn g\u1ed3m:<\/p>\n

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              ASTM A588\/A588M<\/strong> \u2013 Th\u00e9p weathering structural v\u1edbi nhi\u1ec1u grade (A, B, K), \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 th\u00e0nh ph\u1ea7n h\u1ee3p kim ki\u1ec3m so\u00e1t \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<\/li>\n

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              ASTM A242<\/strong> \u2013 M\u00e1c weathering plate v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, th\u01b0\u1eddng d\u00f9ng cho k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi.<\/p>\n<\/li>\n

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              ASTM A606 (Type 4)<\/strong> \u2013 D\u00e0nh cho t\u1ea5m m\u1ecfng weathering steel.<\/p>\n<\/li>\n

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              ASTM A871-65<\/strong> \/ A709-50W<\/strong> \u2013 C\u00e1c m\u00e1c b\u1ed5 sung cho t\u1ea5m v\u00e0 thanh weathering.<\/p>\n<\/li>\n<\/ul>\n

              M\u1ef9 c\u0169ng c\u00f3 h\u01b0\u1edbng d\u1eabn r\u1ea5t chi ti\u1ebft v\u1ec1 thi\u1ebft k\u1ebf, th\u1eed nghi\u1ec7m, h\u00e0n v\u00e0 l\u1eafp d\u1ef1ng<\/strong> cho weathering steel trong c\u00e1c c\u00f4ng tr\u00ecnh c\u1ea7u \u0111\u01b0\u1eddng v\u00e0 k\u1ebft c\u1ea5u c\u00f4ng nghi\u1ec7p. Ngo\u00e0i ra ti\u00eau chu\u1ea9n bolt\/weathering fastener c\u0169ng \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a theo ASTM.<\/p>\n

              \u0110\u00f4ng Nam \u00c1 (ASEAN) \u2013 Ti\u00eau chu\u1ea9n & \u00c1p d\u1ee5ng<\/strong><\/h3>\n

              Khu v\u1ef1c ASEAN kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n th\u1ed1ng nh\u1ea5t ri\u00eang cho weathering steel nh\u01b0 M\u1ef9 hay Nh\u1eadt; h\u1ea7u h\u1ebft \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ASTM, JIS, EN hay GB<\/strong> trong thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n

              Tuy nhi\u00ean, ASEAN c\u00f3 ASEAN Guidelines on Standards and Conformance (AG-STRACAP)<\/strong> nh\u1eb1m t\u1ea1o khung th\u1ed1ng nh\u1ea5t h\u01a1n cho ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt \u2013 v\u1edbi m\u1ee5c ti\u00eau ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 c\u00f4ng nh\u1eadn l\u1eabn nhau gi\u1eefa c\u00e1c n\u01b0\u1edbc th\u00e0nh vi\u00ean<\/strong>. \u0110i\u1ec1u n\u00e0y h\u1ed7 tr\u1ee3 cho vi\u1ec7c th\u00f4ng th\u01b0\u01a1ng v\u00e0 \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u qu\u1ed1c t\u1ebf m\u00e0 kh\u00f4ng ph\u00e2n bi\u1ec7t g\u1ed1c ngu\u1ed3n xu\u1ea5t x\u1ee9.<\/p>\n

              Do kh\u00ed h\u1eadu \u0110\u00f4ng Nam \u00c1 th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m cao v\u00e0 nhi\u1ec1u m\u01b0a<\/strong>, vi\u1ec7c l\u1ef1a ch\u1ecdn l\u1edbp weathering steel ph\u00f9 h\u1ee3p c\u1ea7n x\u00e9t t\u1edbi m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n m\u00f4i tr\u01b0\u1eddng c\u1ee5 th\u1ec3<\/strong>, m\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ASTM ho\u1eb7c EN th\u01b0\u1eddng \u0111\u01b0a ra c\u00e1c y\u00eau c\u1ea7u chu k\u1ef3 wet\u2013dry<\/em>, m\u1ee9c chloride, v\u00e0 y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m k\u00e9o, u\u1ed1n t\u01b0\u01a1ng \u1ee9ng. \u0110i\u1ec1u n\u00e0y gi\u00fap k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf l\u1ef1a ch\u1ecdn ch\u00ednh x\u00e1c h\u01a1n cho t\u1eebng qu\u1ed1c gia trong khu v\u1ef1c.<\/p>\n

              3. So s\u00e1nh lo\u1ea1i v\u1eadt li\u1ec7u weathering steel theo ti\u00eau chu\u1ea9n<\/strong><\/h2>\n
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              Qu\u1ed1c gia \/ Ti\u00eau chu\u1ea9n<\/th>\nC\u00e1c lo\u1ea1i \/ m\u00e1c weathering steel<\/th>\nGhi ch\u00fa ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n
              M\u1ef9 (ASTM)<\/strong><\/td>\nA588 (A\/B\/K), A242, A606 Type 4, A871<\/td>\nD\u00e0nh cho k\u1ebft c\u1ea5u ch\u1ecbu t\u1ea3i, plate, sheet<\/td>\n<\/tr>\n
              Ch\u00e2u \u00c2u (EN 10025-5)<\/strong><\/td>\nS235J0W\/S235J2W, S355J0WP\/S355J2WP<\/td>\nC\u1ea3i thi\u1ec7n toughness, low-temp<\/td>\n<\/tr>\n
              Nh\u1eadt (JIS)<\/strong><\/td>\nSPA-H, SPA-C, SMA400W\/ SMA490W<\/td>\nWeathering cho k\u1ebft c\u1ea5u & rail<\/td>\n<\/tr>\n
              Trung Qu\u1ed1c (GB)<\/strong><\/td>\nQ235NH, Q355NH, Q460NH, Q355GNH<\/td>\nM\u00e1c weathering ph\u1ed5 bi\u1ebfn, \u0111a d\u1ea1ng<\/td>\n<\/tr>\n
              \u00dac\/NZ (AS\/NZS)<\/strong><\/td>\nWR350A\/B, CW300A, HW350A<\/td>\nQuy \u0111\u1ecbnh h\u00e0n & ph\u00e2n v\u00f9ng \u0103n m\u00f2n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

              4. \u1ee8ng d\u1ee5ng & l\u01b0u \u00fd k\u1ef9 thu\u1eadt<\/strong><\/h2>\n

              \u1ee8ng d\u1ee5ng<\/strong><\/h3>\n
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                C\u1ea7u, c\u00f4ng tr\u00ecnh h\u1ea1 t\u1ea7ng<\/strong> (khung th\u00e9p, k\u1ebft c\u1ea5u ch\u1ecbu t\u1ea3i l\u1edbn).<\/p>\n<\/li>\n

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                C\u00e1c k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi<\/strong> nh\u01b0 facade ki\u1ebfn tr\u00fac, t\u01b0\u1eddng ch\u1eafn, \u0111\u01b0\u1eddng \u1ed1ng th\u00e9p.<\/p>\n<\/li>\n

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                Thi\u1ebft b\u1ecb s\u00e2n ga, container, th\u00e1p truy\u1ec1n t\u1ea3i<\/strong>.<\/p>\n<\/li>\n<\/ul>\n

                L\u01b0u \u00fd khi d\u00f9ng weathering steel<\/strong><\/h3>\n
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                  Th\u00e9p n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 chu k\u1ef3 \u01b0\u1edbt \u2013 kh\u00f4 r\u00f5 r\u1ec7t<\/strong> \u0111\u1ec3 l\u1edbp patina ph\u00e1t tri\u1ec3n b\u1ec1n ch\u1eafc.<\/p>\n<\/li>\n

                • \n

                  Kh\u00f4ng ph\u00f9 h\u1ee3p \u1edf m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt li\u00ean t\u1ee5c hay g\u1ea7n bi\u1ec3n c\u00f3 mu\u1ed1i cao<\/strong> tr\u1eeb khi c\u00f3 gi\u1ea3i ph\u00e1p b\u1ed5 sung b\u1ea3o v\u1ec7.<\/p>\n<\/li>\n

                • \n

                  Khi h\u00e0n v\u00e0 l\u1eafp \u0111\u1eb7t, c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n h\u00e0n c\u1ee5 th\u1ec3 v\u00e0 h\u01b0\u1edbng d\u1eabn b\u1ea3o tr\u00ec \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng b\u1ecb ph\u00e1 v\u1ee1<\/strong>.<\/p>\n<\/li>\n<\/ul>\n

                  5. K\u1ebft lu\u1eadn<\/strong><\/h2>\n

                  T\u1ed5ng k\u1ebft l\u1ea1i, weathering steel l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u hi\u1ec7u qu\u1ea3 d\u00e0i h\u1ea1n cho k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi<\/strong> nh\u1edd l\u1edbp \u00f4x\u00edt b\u1ea3o v\u1ec7 t\u1ef1 h\u00ecnh th\u00e0nh. M\u1ed7i qu\u1ed1c gia c\u00f3 h\u1ec7 ti\u00eau chu\u1ea9n ri\u00eang<\/strong> (ASTM \u2013 M\u1ef9, JIS \u2013 Nh\u1eadt, GB \u2013 Trung Qu\u1ed1c, AS\/NZS \u2013 \u00dac) v\u1edbi c\u00e1c m\u00e1c v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nh\u01b0ng kh\u00e1c nhau v\u1ec1 chi ti\u1ebft th\u00e0nh ph\u1ea7n v\u00e0 qui tr\u00ecnh th\u1eed nghi\u1ec7m<\/strong>. Khu v\u1ef1c ASEAN th\u01b0\u1eddng \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf n\u00e0y, th\u00fac \u0111\u1ea9y s\u1ef1 \u0111\u1ed3ng nh\u1ea5t v\u00e0 linh ho\u1ea1t trong l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u khi thi\u1ebft k\u1ebf, s\u1ea3n xu\u1ea5t v\u00e0 thi c\u00f4ng c\u00e1c c\u00f4ng tr\u00ecnh s\u1eed d\u1ee5ng weathering steel.<\/p>\n","protected":false},"excerpt":{"rendered":"

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Kh\u00e1i qu\u00e1t v\u1ec1 th\u00e9p ch\u1ecbu th\u1eddi ti\u1ebft (weathering steel) Th\u00e9p ch\u1ecbu th\u1eddi ti\u1ebft (weathering steel) l\u00e0 nh\u00f3m th\u00e9p h\u1ee3p<\/p>\n","protected":false},"author":58,"featured_media":24492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[320],"tags":[],"class_list":["post-24493","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-world-steel"],"yoast_head":"\nTO\u00c0N C\u1ea2NH TH\u00c9P WEATHERING TO\u00c0N C\u1ea6U: V\u1eacT LI\u1ec6U & TI\u00caU CHU\u1ea8N T\u1ea0I C\u00c1C QU\u1ed0C GIA - World Steel Group<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/worldsteelgroup.com\/vi\/toan-canh-thep-weathering-toan-cau-vat-lieu-tieu-chuan-tai-cac-quoc-gia\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TO\u00c0N C\u1ea2NH TH\u00c9P WEATHERING TO\u00c0N C\u1ea6U: V\u1eacT LI\u1ec6U & TI\u00caU CHU\u1ea8N T\u1ea0I C\u00c1C QU\u1ed0C GIA\" \/>\n<meta property=\"og:description\" content=\"1. 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