{"id":3437,"date":"2022-08-11T16:41:57","date_gmt":"2022-08-11T09:41:57","guid":{"rendered":"https:\/\/bestray.com\/blog\/?p=3437"},"modified":"2024-02-27T16:14:00","modified_gmt":"2024-02-27T09:14:00","slug":"tieu-chuan-tcvn5408-1991","status":"publish","type":"post","link":"https:\/\/bestray.com\/blog\/tieu-chuan-tcvn5408-1991\/","title":{"rendered":"TCVN 5408:1991 &#8211; Ti\u00eau chu\u1ea9n v\u1ec1 b\u1ea3o v\u1ec7 \u0103n m\u00f2n c\u1ee7a l\u1edbp m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, c\u00f3 m\u1ed9t h\u1ec7 ti\u00eau chu\u1ea9n mang t\u00ean <strong>TCVN 5408:1991<\/strong>. \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c tin t\u01b0\u1edfng v\u00e0 s\u1eed d\u1ee5ng t\u1ea1i Vi\u1ec7t Nam. Trong b\u00e0i vi\u1ebft n\u00e0y, Bestray s\u1ebd gi\u00fap b\u1ea1n l\u00e0m r\u00f5 h\u01a1n nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft v\u1ec1 TCVN 5408:1991.<\/span><\/p>\n<h2><strong>1. \u0110\u1ecbnh ngh\u0129a ti\u00eau chu\u1ea9n TCVN 5408:1991? Gi\u1ea3i th\u00edch v\u1ec1 s\u1ef1 thay th\u1ebf b\u1eb1ng TCVN 5408:2007<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">TCVN 5408:1991 l\u00e0 h\u1ec7 ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh v\u1ec1 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed, b\u1ea3o v\u1ec7 c\u00e1c s\u1ea3n ph\u1ea9m gang th\u00e9p tr\u00e1nh b\u1ecb \u0103n m\u00f2n b\u1eb1ng vi\u1ec7c ph\u1ee7 m\u1ed9t l\u1edbp m\u1ea1 k\u1ebdm n\u00f3ng. L\u1edbp ph\u1ee7 k\u1ebdm tr\u00ean b\u1ec1 m\u1eb7t gang th\u00e9p \u0111\u1ea1t chu\u1ea9n c\u0169ng ch\u00ednh l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n TCVN 5408:1991.<\/span><\/p>\n<figure id=\"attachment_3483\" aria-describedby=\"caption-attachment-3483\" style=\"width: 904px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3483 size-full\" src=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1.jpg\" alt=\"Ti\u00eau chu\u1ea9n TCVN 5408:1991\" width=\"904\" height=\"1053\" srcset=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1.jpg 904w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1-258x300.jpg 258w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1-879x1024.jpg 879w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1-768x895.jpg 768w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH1-1-696x811.jpg 696w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><figcaption id=\"caption-attachment-3483\" class=\"wp-caption-text\">S\u1ea3n ph\u1ea9m Bestray \u0111\u1ea1t ti\u00eau chu\u1ea9n TCVN 5408:1991.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">V\u1ec1 s\u1ef1 thay th\u1ebf ti\u00eau chu\u1ea9n tr\u00ean b\u1eb1ng TCVN 5408:2007 v\u1edbi t\u00ean ti\u1ebfng Vi\u1ec7t c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y ch\u00ednh l\u00e0: \u201cL\u1edbp ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng tr\u00ean b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m gang v\u00e0 th\u00e9p &#8211; y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed\u201d. C\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c, TCVN 5408:2007 c\u00f3 y\u00eau c\u1ea7u cao h\u01a1n \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh ph\u1ee7 k\u1ebdm. TCVN 5408:1991 l\u00e0 ti\u00eau chu\u1ea9n v\u1ec1 b\u1ea3o v\u1ec7 \u0103n m\u00f2n c\u1ee7a l\u1edbp ph\u1ee7 m\u1ea1 k\u1ebdm n\u00f3ng, c\u00f2n TCVN 5408:2007 l\u1ea1i c\u00f3 y\u00eau c\u1ea7u cao h\u01a1n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a l\u1edbp ph\u1ee7 n\u00ean s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 b\u1ec1n b\u1ec9 h\u01a1n. V\u1eady n\u00ean, TCVN 5408:1991 \u0111\u00e3 \u0111\u01b0\u1ee3c thay b\u1eb1ng TCVN 5408:2007.<\/span><\/p>\n<h2><strong>2. Ph\u1ea1m vi \u00e1p d\u1ee5ng<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">TCVN 5408:1991 quy \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed chung d\u00e0nh cho c\u00e1c l\u1edbp ph\u1ee7 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng tr\u00ean c\u00e1c s\u1ea3n ph\u1ea9m gang v\u00e0 th\u00e9p. Ngo\u00e0i ra, y\u00eau c\u1ea7u v\u1ec1 l\u1edbp m\u1ea1 k\u1ebdm n\u00f3ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ee9a qu\u00e1 2% c\u00e1c kim lo\u1ea1i kh\u00e1c.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">TCVN 5408:1991 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho h\u1ea7u h\u1ebft c\u00e1c s\u1ea3n ph\u1ea9m gang th\u00e9p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, ngo\u1ea1i tr\u1eeb c\u00e1c s\u1ea3n ph\u1ea9m sau:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ea5m v\u00e0 d\u00e2y m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c \u0111em nh\u00fang n\u00f3ng li\u00ean t\u1ee5c<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u1ed0ng v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng \u0111\u01b0\u1ee3c ph\u1ee7 trong c\u00e1c nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t k\u1ebdm n\u00f3ng t\u1ef1 \u0111\u1ed9ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c s\u1ea3n ph\u1ea9m k\u1ebdm nh\u00fang n\u00f3ng c\u00f3 c\u00e1c ti\u00eau chu\u1ea9n \u0111\u1eb7c bi\u1ec7t v\u00e0 th\u00eam y\u00eau c\u1ea7u b\u1ed5 sung ho\u1eb7c nh\u1eefng y\u00eau c\u1ea7u kh\u00e1c v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee7a TCVN 5408:1991.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ngo\u00e0i ra, c\u00e1c ti\u00eau chu\u1ea9n cho s\u1ea3n ph\u1ea9m ri\u00eang c\u0169ng c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p v\u1edbi TCVN 5408:1991 b\u1eb1ng c\u00e1ch n\u00eau ra s\u1ed1 hi\u1ec7u c\u1ee7a ti\u00eau chu\u1ea9n ho\u1eb7c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c s\u1eeda \u0111\u1ed5i c\u1ee5 th\u1ec3 cho t\u1eebng s\u1ea3n ph\u1ea9m.<\/span><\/p>\n<figure id=\"attachment_3484\" aria-describedby=\"caption-attachment-3484\" style=\"width: 382px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3484 size-full\" src=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH2-removebg-preview.jpg\" alt=\"Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng TCVN 5408:1991\" width=\"382\" height=\"653\" srcset=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH2-removebg-preview.jpg 382w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH2-removebg-preview-175x300.jpg 175w\" sizes=\"auto, (max-width: 382px) 100vw, 382px\" \/><figcaption id=\"caption-attachment-3484\" class=\"wp-caption-text\">TCVN 5408:1991 quy \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed chung d\u00e0nh cho c\u00e1c l\u1edbp ph\u1ee7 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng tr\u00ean c\u00e1c s\u1ea3n ph\u1ea9m gang v\u00e0 th\u00e9p<\/figcaption><\/figure>\n<h2><strong>3. Ti\u00eau chu\u1ea9n vi\u1ec7n d\u1eabn<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Ti\u00eau chu\u1ea9n vi\u1ec7n d\u1eabn c\u1ee7a TCVN 5408:1991 c\u00f3 k\u00e8m theo c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn. \u0110\u00e2y l\u00e0 nh\u1eefng t\u00e0i li\u1ec7u r\u1ea5t c\u1ea7n thi\u1ebft cho h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n n\u00e0y. V\u1ec1 nguy\u00ean t\u1eafc \u00e1p d\u1ee5ng, \u0111\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn c\u00f3 ghi n\u0103m c\u00f4ng b\u1ed1 th\u00ec s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng phi\u00ean b\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00eau. C\u00f2n \u0111\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c ghi n\u0103m c\u00f4ng b\u1ed1 th\u00ec s\u1ebd \u00e1p d\u1ee5ng theo phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t, bao g\u1ed3m c\u00e1c s\u1eeda \u0111\u1ed5i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng ti\u00eau chu\u1ea9n vi\u1ec7n d\u1eabn c\u1ee7a TCVN 5408:1991 qua c\u00e1c n\u0103m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TCVN 5878:2007 (ISO 2178 : 1982): L\u00e0 ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh v\u1ec1 L\u1edbp ph\u1ee7 kh\u00f4ng t\u1eeb tr\u00ean ch\u1ea5t n\u1ec1n t\u1eeb \u2013 \u0110o chi\u1ec1u d\u00e0y l\u1edbp m\u1ea1 \u2013 Ph\u01b0\u01a1ng ph\u00e1p t\u1eeb.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TCVN 7665 (ISO 1460): Ti\u00eau chu\u1ea9n v\u1ec1 L\u1edbp ph\u1ee7 kim lo\u1ea1i \u2013 L\u1edbp ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng tr\u00ean c\u00e1c v\u1eadt li\u1ec7u ch\u1ee9a s\u1eaft \u2013 X\u00e1c \u0111\u1ecbnh kh\u1ed1i l\u01b0\u1ee3ng l\u1edbp m\u1ea1 tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ISO 752: Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh cho k\u1ebdm th\u1ecfi<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ISO 2063:1991: Ti\u00eau chu\u1ea9n v\u1ec1 l\u1edbp ph\u1ee7 kim lo\u1ea1i v\u00e0 c\u00e1c ch\u1ea5t v\u00f4 c\u01a1 kh\u00e1c \u2013 Phun ph\u1ee7 Nhi\u1ec7t \u2013 K\u1ebdm, nh\u00f4m v\u00e0 c\u00e1c h\u1ee3p kim c\u1ee7a ch\u00fang.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ISO 2064:1980: Ti\u00eau chu\u1ea9n v\u1ec1 m\u1ea1 kim lo\u1ea1i v\u00e0 c\u00e1c ch\u1ea5t v\u00f4 c\u01a1 kh\u00e1c \u2013 C\u00e1c \u0111\u1ecbnh ngh\u0129a v\u00e0 quy \u01b0\u1edbc li\u00ean quan \u0111\u1ebfn \u0111o chi\u1ec1u d\u00e0y.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ISO 2859-1: Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh v\u1ec1 quy tr\u00ecnh l\u1ea5y m\u1eabu \u0111\u1ec3 ki\u1ec3m tra m\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ISO 10474: Ti\u00eau chu\u1ea9n v\u1ec1 Th\u00e9p v\u00e0 s\u1ea3n ph\u1ea9m th\u00e9p \u2013 T\u00e0i li\u1ec7u ki\u1ec3m tra<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">EN 1179: Ti\u00eau chu\u1ea9n v\u1ec1 K\u1ebdm v\u00e0 h\u1ee3p kim k\u1ebdm \u2013 K\u1ebdm nguy\u00ean sinh<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_3485\" aria-describedby=\"caption-attachment-3485\" style=\"width: 433px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3485 size-full\" src=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH3-removebg-preview.jpg\" alt=\"Ti\u00eau chu\u1ea9n tr\u00ean vi\u1ec7n d\u1eabn\" width=\"433\" height=\"576\" srcset=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH3-removebg-preview.jpg 433w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH3-removebg-preview-226x300.jpg 226w\" sizes=\"auto, (max-width: 433px) 100vw, 433px\" \/><figcaption id=\"caption-attachment-3485\" class=\"wp-caption-text\">Ti\u00eau chu\u1ea9n vi\u1ec7n d\u1eabn c\u1ee7a TCVN 5408:1991 c\u00f3 k\u00e8m theo c\u00e1c t\u00e0i li\u1ec7u vi\u1ec7n d\u1eabn<\/figcaption><\/figure>\n<h2><strong>4. Thu\u1eadt ng\u1eef v\u00e0 \u0111\u1ecbnh ngh\u0129a<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Trong ti\u00eau chu\u1ea9n TCVN 5408:1991, c\u00e1c \u0111\u1ecbnh ngh\u0129a \u0111\u01b0\u1ee3c n\u00eau d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng chung v\u1edbi thu\u1eadt ng\u1eef trong ti\u00eau chu\u1ea9n ISO 2064.<\/span><\/p>\n<h3><strong>4.1. Ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng (hot dip galvanizing)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Trong h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n TCVN 5408:1991, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 h\u00ecnh th\u00e0nh l\u1edbp ph\u1ee7 k\u1ebdm ho\u1eb7c c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p v\u1edbi h\u1ee3p kim k\u1ebdm &#8211; gang tr\u00ean s\u1ea3n ph\u1ea9m gang th\u00e9p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nh\u00fang th\u00e9p ho\u1eb7c gang \u0111\u01b0\u1ee3c \u0111\u00fac trong k\u1ebdm n\u00f3ng ch\u1ea3y.<\/span><\/p>\n<h3><strong>4.2. M\u1eabu ki\u1ec3m tra (control sample)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Theo TCVN 5408:1991, m\u1ed7i l\u00f4 h\u00e0ng s\u1ebd ch\u1ecdn ra m\u1ed9t s\u1ea3n ph\u1ea9m ho\u1eb7c m\u1ed9t nh\u00f3m s\u1ea3n ph\u1ea9m \u0111\u1ec3 ti\u1ebfn h\u00e0nh ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng.<\/span><\/p>\n<h3><strong>4.3. Chi\u1ec1u d\u00e0y c\u1ee7a l\u1edbp ph\u1ee7 c\u1ee5c b\u1ed9 (local coating thickness)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Thu\u1eadt ng\u1eef n\u00e0y n\u00f3i v\u1ec1 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a chi\u1ec1u d\u00e0y l\u1edbp ph\u1ee7 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1eeb s\u1ed1 l\u1ea7n \u0111o c\u1ee5 th\u1ec3 trong di\u1ec7n t\u00edch chu\u1ea9n, d\u00e0nh cho ph\u01b0\u01a1ng ph\u00e1p th\u1eed t\u1eeb t\u00ednh ho\u1eb7c nh\u1eefng gi\u00e1 tr\u1ecb ri\u00eang \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1eeb vi\u1ec7c th\u1eed ph\u00e2n t\u00edch kh\u1ed1i l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/span><\/p>\n<h3><strong>4.4. Chi\u1ec1u d\u00e0y c\u1ee7a l\u1edbp ph\u1ee7 trung b\u00ecnh (mean coating thickness)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a c\u00e1c chi\u1ec1u d\u00e0y c\u1ee5c b\u1ed9 ho\u1eb7c tr\u00ean m\u1ed9t s\u1ea3n ph\u1ea9m l\u1edbn, c\u0169ng c\u00f3 th\u1ec3 tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c s\u1ea3n ph\u1ea9m trong m\u1eabu ki\u1ec3m tra.<\/span><\/p>\n<h3><strong>4.5. Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a l\u1edbp ph\u1ee7 trung b\u00ecnh (mean coating mass)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Theo TCVN 5408:1991, gi\u00e1 tr\u1ecb n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh ho\u1eb7c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng m\u1eabu ki\u1ec3m tra \u0111\u01b0\u1ee3c ch\u1ecdn theo \u0111i\u1ec1u 5 s\u1eed d\u1ee5ng c\u00e1c m\u1eabu th\u1eed ph\u00f9 h\u1ee3p v\u1edbi TCVN 7665 ho\u1eb7c b\u1eb1ng c\u00e1ch quy \u0111\u1ed5i chi\u1ec1u d\u00e0y l\u1edbp ph\u1ee7 trung b\u00ecnh.<\/span><\/p>\n<h3><strong>4.6. Gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t (minimum value)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Theo TCVN 5408:1991, gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau: Trong m\u1ed9t di\u1ec7n t\u00edch chu\u1ea9n, ng\u01b0\u1eddi ta s\u1ebd l\u1ea5y gi\u00e1 tr\u1ecb \u0111o ri\u00eang th\u1ea5p nh\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c theo ph\u01b0\u01a1ng ph\u00e1p th\u1eed ph\u00e2n t\u00edch kh\u1ed1i l\u01b0\u1ee3ng ho\u1eb7c gi\u00e1 tr\u1ecb trung b\u00ecnh th\u1ea5p nh\u1ea5t \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb s\u1ed1 l\u1ea7n \u0111o c\u1ee5 th\u1ec3 theo ph\u01b0\u01a1ng ph\u00e1p th\u1eed t\u1eeb.<\/span><\/p>\n<h2><strong>5. C\u00e1c y\u00eau c\u1ea7u chung<\/strong><\/h2>\n<h3><strong>5.1. B\u1ec3 ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Trong b\u1ec3 ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng c\u00f3 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn k\u1ebdm n\u00f3ng. Trong \u0111\u00f3, t\u1ed5ng l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t kh\u00e1c gang v\u00e0 thi\u1ebfc trong k\u1ebdm n\u00f3ng kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 1,5% t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng. L\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n ISO 752 ho\u1eb7c EN 1179.<\/span><\/p>\n<h3><strong>5.2. Th\u00f4ng tin \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi kh\u00e1ch h\u00e0ng<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Y\u00eau c\u1ea7u n\u00e0y n\u1eb1m trong ph\u1ee5 l\u1ee5c A c\u1ee7a TCVN 5408:1991. Trong m\u1ee5c n\u00e0y, b\u1ed9 ph\u1eadn chuy\u00ean m\u00f4n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c th\u00f4ng tin sau v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch \u0111\u1eb7c bi\u1ec7t. N\u1ebfu kh\u00f4ng, kh\u00e1ch h\u00e0ng s\u1ebd c\u00f3 nhi\u1ec7m v\u1ee5 cung c\u1ea5p v\u00e0 ch\u1ec9 r\u00f5 c\u00e1c th\u00f4ng tin:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1c thu\u1ed9c t\u00ednh b\u1ea5t k\u1ef3 c\u1ee7a kim lo\u1ea1i n\u1ec1n c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ee7 k\u1ebdm n\u00f3ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Th\u1ef1c hi\u1ec7n nh\u1eadn d\u1ea1ng c\u1ee5 th\u1ec3 c\u00e1c b\u1ec1 m\u1eb7t quan tr\u1ecdng (b\u1eb1ng b\u1ea3n v\u1ebd ho\u1eb7c cung c\u1ea5p c\u00e1c m\u1eabu c\u00f3 \u0111\u00e1nh d\u1ea5u c\u1ee5 th\u1ec3).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cung c\u1ea5p b\u1ea3n v\u1ebd ho\u1eb7c c\u00e1ch th\u1ee9c nh\u1eadn d\u1ea1ng \u1edf c\u00e1c b\u1ec1 m\u1eb7t kh\u00f4ng ph\u1eb3ng (c\u00e1c v\u1eadt tr\u00f2n, c\u00e1c d\u1ea5u ti\u1ebfp x\u00fac\u2026) khi\u1ebfn s\u1ea3n ph\u1ea9m kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn d\u00f9ng cho c\u00e1c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng d\u1ef1 ki\u1ebfn. Th\u00eam v\u00e0o \u0111\u00f3 kh\u00e1ch h\u00e0ng c\u1ea7n th\u1ecfa thu\u1eadn r\u00f5 r\u00e0ng v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ee7 k\u1ebdm v\u1ec1 c\u00e1c bi\u1ec7n ph\u00e1p x\u1eed l\u00fd nh\u1eefng v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cung c\u1ea5p m\u1eabu ho\u1eb7c c\u00e1c c\u00e1ch th\u1ee9c kh\u00e1c nh\u1eb1m ch\u1ec9 r\u00f5 \u0111\u1ed9 ho\u00e0n thi\u1ec7n theo y\u00eau c\u1ea7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c y\u00eau c\u1ea7u khi c\u1ea7n x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chi\u1ec1u d\u00e0y b\u1ea5t k\u1ef3 l\u1edbp ph\u1ee7 \u0111\u1eb7c bi\u1ec7t n\u00e0o<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn vi\u1ec7c ph\u1ee7 ly t\u00e2m ph\u00f9 h\u1ee3p cho s\u1ea3n ph\u1ea9m gang th\u00e9p<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cung c\u1ea5p b\u1ea5t k\u1ef3 vi\u1ec7c h\u1eadu x\u1eed l\u00fd ho\u1eb7c s\u01a1n ph\u1ee7 ngo\u00e0i \u0111\u1ed1i v\u1edbi l\u1edbp ph\u1ee7 k\u1ebdm<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B\u1ed1 tr\u00ed ti\u1ebfn h\u00e0nh ki\u1ec3m tra s\u1ea3n ph\u1ea9m<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1ea3n ph\u1ea9m c\u00f3 ch\u1ee9ng nh\u1eadn th\u1ecfa m\u00e3n y\u00eau c\u1ea7u ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n ISO 10474 hay kh\u00f4ng.<\/span><\/li>\n<\/ul>\n<h3><strong>5.3. An to\u00e0n<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 an to\u00e0n n\u1eb1m trong ph\u1ee5 l\u1ee5c B c\u1ee7a TCVN 5408:1991. \u0110\u00e2y l\u00e0 c\u00e1c y\u00eau c\u1ea7u an to\u00e0n v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, trong \u0111\u00f3 g\u1ed3m nh\u1eefng y\u00eau c\u1ea7u sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cung c\u1ea5p c\u00e1c bi\u1ec7n ph\u00e1p x\u1eed l\u00fd c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 l\u1ed7 r\u1ed7 nh\u01b0 bi\u1ec7n ph\u00e1p th\u00f4ng h\u01a1i, tho\u00e1t \u0111\u1ed9ng c\u00e1c l\u1ed7 r\u1ed7 \u0111\u00f3. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ee7 k\u1ebdm n\u00f3ng b\u1ed1 tr\u00ed c\u00e1c \u0111\u01b0\u1eddng th\u00f4ng kh\u00ed v\u00e0 tho\u00e1t \u0111\u1ecdng. (Y\u00eau c\u1ea7u n\u00e0y \u0111\u01b0a ra trong tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng c\u00f3 c\u00e1c quy \u0111\u1ecbnh v\u1ec1 an to\u00e0n v\u00e0 s\u1ee9c kh\u1ecfe bao g\u1ed3m th\u00f4ng h\u01a1i v\u00e0 tho\u00e1t \u0111\u1ecdng c\u1ee7a l\u1ed7 r\u1ed7).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B\u00ean c\u1ea1nh \u0111\u00f3, c\u1ea7n ch\u00fa \u00fd tr\u00e1nh c\u00e1c l\u1ed7 r\u1ed7 v\u00ec kh\u1ea3 n\u0103ng g\u00e2y n\u1ed5 trong qu\u00e1 tr\u00ecnh ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng.\u00a0<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_3486\" aria-describedby=\"caption-attachment-3486\" style=\"width: 426px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3486 size-full\" src=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH4-1.jpg\" alt=\"S\u1ea3n ph\u1ea9m Bestray \u0111\u1ea1t chu\u1ea9n an to\u00e0n theo ti\u00eau chu\u1ea9n TCVN 5408:1991\" width=\"426\" height=\"585\" srcset=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH4-1.jpg 426w, https:\/\/bestray.com\/blog\/wp-content\/uploads\/2022\/08\/HINH4-1-218x300.jpg 218w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><figcaption id=\"caption-attachment-3486\" class=\"wp-caption-text\">S\u1ea3n ph\u1ea9m Bestray \u0111\u1ea1t chu\u1ea9n an to\u00e0n<\/figcaption><\/figure>\n<h2><strong>6. L\u1ea5y m\u1eabu<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Theo TCVN 5408:1991, m\u1eabu ki\u1ec3m tra chi\u1ec1u d\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ea5y ng\u1eabu nhi\u00ean trong m\u1ed7i l\u00f4 ki\u1ec3m tra \u0111\u00e3 ch\u1ecdn \u0111\u1ec3 th\u1eed. Trong \u0111\u00f3, s\u1ed1 s\u1ea3n ph\u1ea9m nh\u1ecf nh\u1ea5t \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb m\u1ed7i l\u00f4 nh\u1ecf nh\u1ea5t trong c\u00e1c l\u00f4 ki\u1ec3m tra ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh l\u1ea5y m\u1eabu d\u1ef1a theo b\u1ea3ng \u201cL\u00f4 m\u1eabu ki\u1ec3m tra c\u00f3 li\u00ean quan\u201d d\u01b0\u1edbi \u0111\u00e2y:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>S\u1ed1 s\u1ea3n ph\u1ea9m trong l\u00f4<\/b><\/td>\n<td><b>S\u1ed1 s\u1ea3n ph\u1ea9m nh\u1ecf nh\u1ea5t c\u1ea7n l\u1ea5y m\u1eabu ki\u1ec3m tra<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1 \u0111\u1ebfn 3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ea5t c\u1ea3<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">4 \u0111\u1ebfn 500<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">501 \u0111\u1ebfn 1200<\/span><\/td>\n<td><span style=\"font-weight: 400;\">5<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1201 \u0111\u1ebfn 3200<\/span><\/td>\n<td><span style=\"font-weight: 400;\">8<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3201 \u0111\u1ebfn 10000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">13<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">&gt;10000<\/span><\/td>\n<td><span style=\"font-weight: 400;\">20<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">TCVN 5408:1991 c\u0169ng y\u00eau c\u1ea7u vi\u1ec7c ki\u1ec3m tra v\u00e0 nghi\u1ec7m thu ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u01b0\u1edbc khi \u0111\u01b0a s\u1ea3n ph\u1ea9m ra kh\u1ecfi nh\u00e0 m\u00e1y ph\u1ee7 k\u1ebdm nh\u00fang n\u00f3ng. Tr\u1eeb khi c\u00f3 c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 th\u1eddi gian ki\u1ec3m tra t\u1eeb ph\u00eda b\u00ean \u0111\u1eb7t h\u00e0ng, quy tr\u00ecnh v\u1eabn s\u1ebd di\u1ec5n ra ch\u00ednh x\u00e1c.<\/span><\/p>\n<h2><strong>7. T\u1ed5ng k\u1ebft<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft v\u1ec1 ti\u00eau chu\u1ea9n TCVN 5408:1991. Ch\u00fang t\u00f4i hy v\u1ecdng r\u1eb1ng, nh\u1eefng th\u00f4ng tin v\u1eeba cung c\u1ea5p s\u1ebd gi\u00fap b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 TCVN 5408:1991. Trong x\u00e2y d\u1ef1ng v\u00e0 ng\u00e0nh s\u1ea3n xu\u1ea5t nguy\u00ean v\u1eadt li\u1ec7u gang th\u00e9p, nguy\u00ean v\u1eadt li\u1ec7u ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh s\u1ef1 th\u00e0nh c\u00f4ng v\u00e0 \u0111\u1ed9 b\u1ec1n b\u1ec9 c\u1ee7a c\u00f4ng tr\u00ecnh c\u0169ng nh\u01b0 c\u1ee7a s\u1ea3n ph\u1ea9m.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">T\u1ea1i Bestray, ch\u00fang t\u00f4i s\u1ea3n xu\u1ea5t v\u00e0 kinh doanh c\u00e1c m\u1eb7t h\u00e0ng kim lo\u1ea1i ph\u1ee7 k\u1ebdm ch\u1ea5t l\u01b0\u1ee3ng, uy t\u00edn v\u00e0 \u0111\u1ea1t TCVN 5408:2007. Ch\u00fang t\u00f4i tin r\u1eb1ng, nh\u1eefng s\u1ea3n ph\u1ea9m c\u1ee7a Bestray lu\u00f4n l\u00e0 nh\u1eefng s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t nh\u1ea5t, gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng nh\u1ea5t.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u1ec1 Bestray, ch\u00fang t\u00f4i l\u00e0 m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u v\u1edbi h\u01a1n 15 n\u0103m kinh nghi\u1ec7m trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t, nghi\u00ean c\u1ee9u v\u00e0 ph\u00e2n ph\u1ed1i c\u00e1c s\u1ea3n ph\u1ea9m x\u00e2y d\u1ef1ng cho c\u00e1c c\u00f4ng tr\u00ecnh v\u00e0 trong ng\u00e0nh \u0111i\u1ec7n. V\u1edbi d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ti\u00ean ti\u1ebfn, hi\u1ec7n \u0111\u1ea1i c\u00f9ng c\u00e1c k\u1ef9 s\u01b0 gi\u1ecfi trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t \u0111i\u1ec7n v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m c\u01a1 kh\u00ed, c\u00f4ng nghi\u1ec7p.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u1ebfu b\u1ea1n c\u00f2n b\u1ea5t c\u1ee9 b\u0103n kho\u0103n, th\u1eafc m\u1eafc hay mu\u1ed1n \u0111\u1eb7t h\u00e0ng t\u1ea1i Bestray, h\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i qua hotline <\/span><b>0909 089 678. <\/b><span style=\"font-weight: 400;\">C\u00e1c nh\u00e2n vi\u00ean ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng s\u1ebd lu\u00f4n t\u00fac tr\u1ef1c v\u00e0 t\u01b0 v\u1ea5n, gi\u1ea3i \u0111\u00e1p m\u1ecdi v\u1ea5n \u0111\u1ec1 c\u1ee7a b\u1ea1n.<\/span><\/p>\n<p><b>Ngo\u00e0i ra, b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u th\u00eam c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c c\u1ee7a Bestray nh\u01b0:<\/b><\/p>\n<p><strong><a href=\"https:\/\/bestray.com\/cable-management\/mang-cap\/\" target=\"_blank\" rel=\"noopener\">M\u00e1ng c\u00e1p<\/a> <\/strong><\/p>\n<p><strong><a href=\"https:\/\/bestray.com\/cable-management\/thang-cap\/\" target=\"_blank\" rel=\"noopener\">Thang c\u00e1p<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/bestray.com\/cable-management\/khay-cap\/\" target=\"_blank\" rel=\"noopener\">Khay c\u00e1p<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/bestray.com\/cable-management\/mang-luoi\/\" target=\"_blank\" rel=\"noopener\">M\u00e1ng l\u01b0\u1edbi<\/a><\/strong><\/p>\n<p><a href=\"https:\/\/bestray.com\/blog\/lua-chon-phu-kien-mang-cap\/\" target=\"_blank\" rel=\"noopener\"><strong>Ph\u1ee5 ki\u1ec7n m\u00e1ng c\u00e1p\u00a0<\/strong><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-5197\" src=\"https:\/\/bestray.com\/blog\/wp-content\/uploads\/2024\/02\/Thang-Mang-Cap-Bestray-Chat-Luong-Cao-\u2013-Giai-Phap-Bao-Ve-An-Toan-Cho-He-Thong-Dien-1.gif\" alt=\"thang m\u00e1ng c\u00e1p\" width=\"1080\" height=\"1080\" \/><\/p>\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/p>\n<h2><strong>C\u00f4ng Ty C\u1ed5 Ph\u1ea7n Bestray &#8211; Chuy\u00ean S\u1ea3n Xu\u1ea5t Thang M\u00e1ng C\u00e1p (Cable Tray, <\/strong><strong>Cable <\/strong><strong>Trunking)<\/strong><\/h2>\n<ul>\n<li><span style=\"font-size: 20px;\">\u0110\u1ecba ch\u1ec9: 180\/7b, \u1ea5p T\u00e2n Th\u1edbi 3, x\u00e3 T\u00e2n Hi\u1ec7p, huy\u1ec7n H\u00f3c M\u00f4n, TPHCM<\/span><\/li>\n<li><span style=\"font-size: 20px;\">\u0110i\u1ec7n Tho\u1ea1i: (028) 3713 3076 &#8211; 078 453 1668 &#8211; 0909 089 678<\/span><\/li>\n<li><span style=\"font-size: 20px;\">E-mail: sales@bestray<\/span><\/li>\n<\/ul>\n<p><strong>Ngo\u00e0i ra, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o m\u1ed9t s\u1ed1 b\u00e0i vi\u1ebft kh\u00e1c c\u1ee7a Bestray:<\/strong><\/p>\n<ul>\n<li>Nh\u1eefng \u0111i\u1ec1u c\u1ea7n bi\u1ebft v\u1ec1 quy tr\u00ecnh <a href=\"https:\/\/bestray.com\/blog\/quy-trinh-san-xuat-mang-cap-dien\/\" target=\"_blank\" rel=\"noopener\"><strong>s\u1ea3n xu\u1ea5t m\u00e1ng c\u00e1p \u0111i\u1ec7n<\/strong><\/a><\/li>\n<li>Nh\u1eefng \u0111i\u1ec1u b\u1ea1n c\u1ea7n bi\u1ebft v\u1ec1 <a href=\"https:\/\/bestray.com\/blog\/quy-trinh-san-xuat-mang-cap-dien\/\" target=\"_blank\" rel=\"noopener\"><strong>ti\u00eau chu\u1ea9n m\u00e1ng c\u00e1p \u0111i\u1ec7n<\/strong><\/a><\/li>\n<li>Quy ph\u1ea1m k\u1ef9 thu\u1eadt an to\u00e0n trong x\u00e2y d\u1ef1ng <a href=\"https:\/\/bestray.com\/blog\/tieu-chuan-tcvn-5308-1991\/\" target=\"_blank\" rel=\"noopener\"><strong>TCVN 5308:1991<\/strong><\/a><\/li>\n<li>Th\u00f4ng Tin C\u1ea7n Bi\u1ebft V\u1ec1 <a href=\"https:\/\/bestray.com\/blog\/thong-tin-ve-gia-do-thang-cap\/\" target=\"_blank\" rel=\"noopener\"><strong>Gi\u00e1 \u0110\u1ee1 Thang C\u00e1p<\/strong><\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Trong l\u0129nh v\u1ef1c m\u1ea1 k\u1ebdm, c\u00f3 m\u1ed9t h\u1ec7 ti\u00eau chu\u1ea9n mang t\u00ean TCVN 5408:1991. \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c tin t\u01b0\u1edfng v\u00e0 s\u1eed d\u1ee5ng t\u1ea1i Vi\u1ec7t Nam. Trong b\u00e0i vi\u1ebft n\u00e0y, Bestray s\u1ebd gi\u00fap b\u1ea1n l\u00e0m r\u00f5 h\u01a1n nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft v\u1ec1 TCVN 5408:1991. 1. \u0110\u1ecbnh ngh\u0129a ti\u00eau chu\u1ea9n TCVN 5408:1991? Gi\u1ea3i th\u00edch [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3496,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[269],"class_list":{"0":"post-3437","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-xay-dung","8":"tag-tcvn"},"lang":"vi","translations":{"vi":3437},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/posts\/3437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/comments?post=3437"}],"version-history":[{"count":8,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/posts\/3437\/revisions"}],"predecessor-version":[{"id":5314,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/posts\/3437\/revisions\/5314"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/media\/3496"}],"wp:attachment":[{"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/media?parent=3437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/categories?post=3437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bestray.com\/blog\/wp-json\/wp\/v2\/tags?post=3437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}