{"id":943,"date":"2025-07-29T05:58:21","date_gmt":"2025-07-29T05:58:21","guid":{"rendered":"https:\/\/luzhongbao.com\/?p=943"},"modified":"2025-07-29T05:58:23","modified_gmt":"2025-07-29T05:58:23","slug":"vi-gang-deo","status":"publish","type":"post","link":"https:\/\/luzhongbao.com\/vi\/vi-gang-deo\/","title":{"rendered":"L\u01b0\u1edbi tho\u00e1t n\u01b0\u1edbc tr\u00f2n b\u1eb1ng gang d\u1ebbo 700\u00d7800"},"content":{"rendered":"<h3 class=\"wp-block-heading\">I. S\u1ef1 xu\u1ea5t s\u1eafc v\u1ec1 c\u1ea5u tr\u00fac: Khoa h\u1ecdc v\u1ec1 thi\u1ebft k\u1ebf tu\u1ea7n ho\u00e0n &nbsp;<\/h3>\n\n\n\n<p>1. K\u1ef9 thu\u1eadt t\u1ef7 l\u1ec7 v\u00e0ng &nbsp;<\/p>\n\n\n\n<p>L\u01b0\u1edbi 700mm + khung 800mm t\u1ea1o ra v\u00e0nh 100mm (r\u1ed9ng h\u01a1n ti\u00eau chu\u1ea9n 3 l\u1ea7n), ph\u00e2n t\u00e1n t\u1ea3i tr\u1ecdng b\u00e1nh xe 70% xu\u1ed1ng nh\u1ef1a \u0111\u01b0\u1eddng\u2014gi\u1ea3m m\u1ed9t n\u1eeda \u00e1p su\u1ea5t tr\u1ee5c v\u00e0 lo\u1ea1i b\u1ecf &quot;\u1ed5 g\u00e0 xung quanh&quot;. &nbsp;<\/p>\n\n\n\n<p>2. K\u00eanh d\u00f2ng ch\u1ea3y xo\u00e1y &nbsp;<\/p>\n\n\n\n<p>B\u1ed1 tr\u00ed thanh xo\u1eafn \u1ed1c-h\u01b0\u1edbng t\u00e2m (b\u00ean trong d\u00e0y\/b\u00ean ngo\u00e0i th\u01b0a) gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng tho\u00e1t n\u01b0\u1edbc 25% so v\u1edbi song ch\u1eafn vu\u00f4ng trong c\u01a1n b\u00e3o. &nbsp;<\/p>\n\n\n\n<p>C\u00e1c c\u1ea1nh v\u00e1t 15\u00b0 d\u1eabn c\u00e1c m\u1ea3nh v\u1ee5n v\u00e0o tr\u1ee5c th\u00f4ng qua d\u00f2ng xo\u00e1y th\u1ee7y l\u1ef1c, lo\u1ea1i b\u1ecf vi\u1ec7c v\u1ec7 sinh thanh b\u1eb1ng tay. &nbsp;<\/p>\n\n\n\n<p>3. Ki\u1ebfn tr\u00fac t\u1ea3i ba l\u1edbp &nbsp;<\/p>\n\n\n\n<p>M\u1eb7t tr\u00ean: kh\u00eda kim c\u01b0\u01a1ng 3mm (h\u1ec7 s\u1ed1 ma s\u00e1t 0,65). &nbsp;<\/p>\n\n\n\n<p>Gi\u1eefa: Gang d\u1ebbo QT500-7 (c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o \u2265420MPa). &nbsp;<\/p>\n\n\n\n<p>\u0110\u1ebf: G\u1edd h\u00ecnh ch\u1eef th\u1eadp 12mm ng\u0103n ng\u1eeba s\u1ef1 bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi t\u1ea3i tr\u1ecdng l\u1ec7ch t\u00e2m. &nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">II. N\u0103m \u01b0u \u0111i\u1ec3m ch\u1ed1ng b\u00e3o &nbsp;<\/h3>\n\n\n\n<p>1. Ki\u1ec3m so\u00e1t l\u0169 l\u1ee5t t\u1ee9c th\u1eddi &nbsp;<\/p>\n\n\n\n<p>K\u00eanh xo\u00e1y + c\u1ed1ng tho\u00e1t n\u01b0\u1edbc t\u1eadp trung 35L\/gi\u00e2y (l\u00e0m s\u1ea1ch xe ch\u1edf n\u01b0\u1edbc trong 3 ph\u00fat). &nbsp;<\/p>\n\n\n\n<p>Gi\u1ea3m t\u00ecnh tr\u1ea1ng ng\u1eadp l\u1ee5t t\u1eeb 2 gi\u1edd xu\u1ed1ng c\u00f2n 15 ph\u00fat khi l\u1eafp \u0111\u1eb7t 20 c\u1ea7u v\u01b0\u1ee3t. &nbsp;<\/p>\n\n\n\n<p>2. Im l\u1eb7ng &amp; Ch\u1ed1ng tr\u1ed9m &nbsp;<\/p>\n\n\n\n<p>Gio\u0103ng EPDM h\u00ecnh \u03a9 h\u1ea1n ch\u1ebf ti\u1ebfng \u1ed3n \u1edf m\u1ee9c \u226442dB (\u0111\u1ed9 y\u00ean t\u0129nh c\u1ee7a th\u01b0 vi\u1ec7n). &nbsp;<\/p>\n\n\n\n<p>T\u1ef7 l\u1ec7 tr\u1ed9m c\u1eafp b\u1eb1ng kh\u00f4ng: \u0111\u00fac kh\u1ed1i li\u1ec1n kh\u1ed1i kh\u00f4ng c\u1ea7n bu l\u00f4ng v\u00e0 kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb ph\u1ebf li\u1ec7u. &nbsp;<\/p>\n\n\n\n<p>3. Vua \u0103n m\u00f2n &nbsp;<\/p>\n\n\n\n<p>L\u1edbp ph\u1ee7 epoxy k\u1ebdm nh\u00fang n\u00f3ng + h\u1eafc \u00edn than \u0111\u00e1 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c ch\u1ea5t ch\u1ed1ng \u0111\u00f3ng b\u0103ng\/s\u01b0\u01a1ng d\u1ea7u\/axit trong h\u01a1n 25 n\u0103m. &nbsp;<\/p>\n\n\n\n<p>\u0110\u1ed9 m\u00e0i m\u00f2n h\u00e0ng n\u0103m \u22640,1mm\u2014tu\u1ed5i th\u1ecd d\u00e0i h\u01a1n 3 l\u1ea7n so v\u1edbi v\u1eadt li\u1ec7u composite. &nbsp;<\/p>\n\n\n\n<p>4. Ch\u1ed1ng t\u1eafc ngh\u1ebdn v\u00e0 kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec &nbsp;<\/p>\n\n\n\n<p>Thanh xo\u1eafn \u1ed1c d\u1eabn h\u01b0\u1edbng c\u00e1c nh\u00e1nh theo h\u01b0\u1edbng ti\u1ebfp tuy\u1ebfn v\u00e0o tr\u1ee5c; th\u00f4ng tho\u00e1ng b\u1eb1ng m\u00f3c k\u00e9o \u0111\u01a1n. &nbsp;<\/p>\n\n\n\n<p>Kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec: l\u00e0m s\u1ea1ch ngay l\u1eadp t\u1ee9c b\u1eb1ng m\u00e1y r\u1eeda \u00e1p l\u1ef1c (ti\u1ebft ki\u1ec7m nh\u00e2n c\u00f4ng 80%). &nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">III. Th\u00e0nh th\u1ea1o c\u00e0i \u0111\u1eb7t &nbsp;<\/h3>\n\n\n\n<p>1. H\u1ee3p nh\u1ea5t m\u1eb7t b\u00edch-\u0111\u01b0\u1eddng &nbsp;<\/p>\n\n\n\n<p>\u0110\u00e0o \u0111\u01b0\u1eddng k\u00ednh &gt;100cm; \u0111\u1eb7t khung c\u00e1ch m\u1eb7t \u0111\u01b0\u1eddng 3\u20134cm. &nbsp;<\/p>\n\n\n\n<p>N\u00e9n nh\u1ef1a \u0111\u01b0\u1eddng hai giai \u0111o\u1ea1n: ban \u0111\u1ea7u 140\u00b0C \u2192 cu\u1ed1i c\u00f9ng 110\u00b0C, l\u0103n xo\u1eafn \u1ed1c v\u00e0o trong \u0111\u1ec3 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch. &nbsp;<\/p>\n\n\n\n<p>2. \u0110\u1ed9 d\u1ed1c tho\u00e1t n\u01b0\u1edbc t\u1ed1i \u01b0u &nbsp;<\/p>\n\n\n\n<p>\u0110\u1ed9 nghi\u00eang ra ngo\u00e0i 5\u00b0 cho ph\u00e9p thu n\u01b0\u1edbc theo m\u1ecdi h\u01b0\u1edbng. &nbsp;<\/p>\n\n\n\n<p>\u0110\u1ed9 d\u1ed1c \u0111\u00e1y \u22657% (so v\u1edbi \u0111\u1ed9 d\u1ed1c chu\u1ea9n 5%) t\u1ef1 cu\u1ed1n tr\u00f4i tr\u1ea7m t\u00edch v\u1ec1 h\u1ea1 l\u01b0u. &nbsp;<\/p>\n\n\n\n<p>3. C\u00f4ng ngh\u1ec7 ch\u1ed1ng \u0111\u1ecbnh c\u01b0 &nbsp;<\/p>\n\n\n\n<p>L\u1ea5p l\u1ea1i b\u1eb1ng c\u00e1t trung b\u00ecnh + xi m\u0103ng 10% (\u0111\u1ea7m rung); kh\u00f4ng c\u00f3 s\u1ecfi trong v\u00f2ng 30cm. &nbsp;<\/p>\n\n\n\n<p>C\u00e1c m\u1ed1i n\u1ed1i \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn b\u1eb1ng h\u1ee3p ch\u1ea5t nhi\u1ec7t d\u1ebbo (dung sai t\u1eeb -30\u00b0C \u0111\u1ebfn 120\u00b0C). &nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IV. \u1ee8ng d\u1ee5ng v\u00f4 song &nbsp;<\/h3>\n\n\n\n<p>1. \u0110\u01b0\u1eddng cong g\u1ea5p: Kh\u00f4ng c\u00f3 g\u00f3c t\u1eadp trung \u1ee9ng su\u1ea5t; lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t m\u00e9p. &nbsp;<\/p>\n\n\n\n<p>2. Underbridge Lows: Thi\u1ebft k\u1ebf xo\u00e1y n\u01b0\u1edbc \u0111\u00e1nh b\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ecdng n\u01b0\u1edbc ly t\u00e2m. &nbsp;<\/p>\n\n\n\n<p>3. L\u00e0n \u0111\u01b0\u1eddng h\u1eb9p: \u0110\u01b0\u1eddng k\u00ednh 70cm ph\u00f9 h\u1ee3p v\u1edbi \u0111\u01b0\u1eddng r\u1ed9ng 4m m\u00e0 kh\u00f4ng c\u00f3 ng\u01b0\u1eddi \u0111i b\u1ed9 l\u1ea5n chi\u1ebfm. &nbsp;<\/p>\n\n\n\n<p>4. V\u00f9ng d\u1ea7u m\u1ee1: Thanh v\u00e1t lo\u1ea1i b\u1ecf c\u1eb7n d\u1ea7u; l\u00e0m s\u1ea1ch b\u1eb1ng tia n\u01b0\u1edbc. &nbsp;<\/p>\n\n\n\n<p>5. V\u00f9ng \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu: \u0110\u00fac li\u1ec1n m\u1ea1ch ch\u1ecbu \u0111\u01b0\u1ee3c chu k\u1ef3 \u0111\u00f3ng b\u0103ng-tan b\u0103ng \u1edf nhi\u1ec7t \u0111\u1ed9 -40\u00b0C. &nbsp;<\/p>\n\n\n\n<p>So v\u1edbi song ch\u1eafn vu\u00f4ng: 20% c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao h\u01a1n, 25% tho\u00e1t n\u01b0\u1edbc nhanh h\u01a1n, kh\u00f4ng c\u00f3 m\u1ea3nh v\u1ee5n n\u00e0o b\u00e1m v\u00e0o\u2014chi\u1ebfm \u01b0u th\u1ebf \u1edf c\u00e1c \u0111\u01b0\u1eddng cong\/v\u1ecb tr\u00ed l\u00f5m! &nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u1eddi k\u1ebft: Hai m\u01b0\u01a1i l\u0103m n\u0103m m\u01b0a, v\u00f2ng tr\u00f2n v\u1eabn l\u00e0 \u00e2n s\u1ee7ng m\u1ea1nh m\u1ebd nh\u1ea5t &nbsp;<\/h3>\n\n\n\n<p>Qua hai th\u1eadp k\u1ef7 ch\u1ed1ng ch\u1ecdi v\u1edbi l\u0169 l\u1ee5t, t\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn nh\u1eefng song ch\u1eafn vu\u00f4ng ch\u00ecm ngh\u1ec9m trong v\u00f4 v\u1ecdng, trong khi song ch\u1eafn tr\u00f2n c\u1ee9u s\u1ed1ng nh\u1eefng tr\u1ea1m x\u0103ng \u0111ang ch\u00ecm d\u1ea7n. Song ch\u1eafn s\u1eaft d\u1ebbo 700x800 chinh ph\u1ee5c l\u0169 l\u1ee5t b\u1eb1ng c\u00e1ch ch\u1ebf ng\u1ef1 d\u00f2ng n\u01b0\u1edbc l\u0169 b\u1eb1ng d\u00f2ng xo\u00e1y, ch\u1ecbu t\u1ea3i tr\u1ecdng b\u00e1nh xe v\u1edbi s\u1ee9c m\u1ea1nh h\u00ecnh ch\u1eef th\u1eadp, v\u00e0 th\u1ec3 hi\u1ec7n tr\u00e1ch nhi\u1ec7m c\u00f4ng d\u00e2n th\u00f4ng qua kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec. L\u1ea7n t\u1edbi khi b\u1ea1n \u0111i qua g\u1ea7m c\u1ea7u, h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn nh\u1eefng chi\u1ebfc \u0111\u0129a l\u1eb7ng l\u1ebd n\u00e0y: n\u01a1i nh\u1eefng xo\u00e1y n\u01b0\u1edbc trong c\u01a1n b\u00e3o h\u1ed9i t\u1ee5 r\u1ed3i bi\u1ebfn m\u1ea5t\u2014kh\u00f4ng ch\u1ec9 l\u00e0 ngh\u1ec7 thu\u1eadt tho\u00e1t n\u01b0\u1edbc, m\u00e0 c\u00f2n l\u00e0 nh\u1ecbp \u0111i\u1ec7u c\u1ee7a ch\u00ednh cu\u1ed9c s\u1ed1ng \u0111\u00f4 th\u1ecb.<\/p>","protected":false},"excerpt":{"rendered":"<p>I. S\u1ef1 xu\u1ea5t s\u1eafc v\u1ec1 k\u1ebft c\u1ea5u: Khoa h\u1ecdc thi\u1ebft k\u1ebf h\u00ecnh tr\u00f2n 1. K\u1ef9 thu\u1eadt t\u1ef7 l\u1ec7 v\u00e0ng L\u01b0\u1edbi 700mm + khung 800mm t\u1ea1o ra m\u1eb7t b\u00edch 100mm (r\u1ed9ng h\u01a1n ti\u00eau chu\u1ea9n g\u1ea5p 3 l\u1ea7n), ph\u00e2n t\u00e1n t\u1ea3i tr\u1ecdng b\u00e1nh xe 70% xu\u1ed1ng nh\u1ef1a \u0111\u01b0\u1eddng\u2014gi\u1ea3m m\u1ed9t n\u1eeda \u00e1p l\u1ef1c tr\u1ee5c v\u00e0 lo\u1ea1i b\u1ecf &quot;\u1ed5 g\u00e0 chu vi&quot;. 2. K\u00eanh d\u00f2ng ch\u1ea3y xo\u00e1y S\u1eafp x\u1ebfp thanh xo\u1eafn \u1ed1c-h\u01b0\u1edbng t\u00e2m (b\u00ean trong d\u00e0y\/b\u00ean ngo\u00e0i th\u01b0a) gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng tho\u00e1t n\u01b0\u1edbc L\u01b0\u1edbi 25% so v\u1edbi l\u01b0\u1edbi vu\u00f4ng [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,45,2,8],"tags":[126,87],"class_list":["post-943","post","type-post","status-publish","format-standard","hentry","category-ductile-cast-iron-products","category-grate","category-products","category-round-manhole-cover","tag-ductile-cast-iron","tag-grate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>700\u00d7800 Ductile Iron Circular Drainage Grate - Ductile Cast Iron Grate - Hubei Luzhongbao Metal Products Co., Ltd<\/title>\n<meta name=\"description\" content=\"This QT500-7 ductile iron grate revolutionizes drainage efficiency with vortex-flow design and quintuple safety protection. Its V-shaped bars and nano-coating reduce clogging risk by 70%, while 25-year maintenance-free operation redefines drainage infrastructure standards\u2014a benchmark for public safety, lifecycle economy, and ecological resilience.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/luzhongbao.com\/vi\/vi-gang-deo\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"700\u00d7800 Ductile Iron Circular Drainage Grate - Ductile Cast Iron Grate - Hubei Luzhongbao Metal Products Co., Ltd\" \/>\n<meta property=\"og:description\" content=\"This QT500-7 ductile iron grate revolutionizes drainage efficiency with vortex-flow design and quintuple safety protection. Its V-shaped bars and nano-coating reduce clogging risk by 70%, while 25-year maintenance-free operation redefines drainage infrastructure standards\u2014a benchmark for public safety, lifecycle economy, and ecological resilience.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/luzhongbao.com\/vi\/vi-gang-deo\/\" \/>\n<meta property=\"og:site_name\" content=\"Hubei Luzhongbao Metal Products Co., Ltd\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-29T05:58:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-29T05:58:23+00:00\" \/>\n<meta name=\"author\" content=\"luzhongbao\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Levi_Luzhongbao\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"luzhongbao\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/\"},\"author\":{\"name\":\"luzhongbao\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#\\\/schema\\\/person\\\/e22c08e75b650a9d574f5aeabb3db2cf\"},\"headline\":\"700\u00d7800 Ductile Iron Circular Drainage Grate\",\"datePublished\":\"2025-07-29T05:58:21+00:00\",\"dateModified\":\"2025-07-29T05:58:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/\"},\"wordCount\":446,\"commentCount\":0,\"keywords\":[\"Ductile Cast Iron\",\"Grate\"],\"articleSection\":[\"Ductile Cast Iron Products\",\"Grate\",\"Products\",\"Round Manhole Cover\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/\",\"url\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/\",\"name\":\"700\u00d7800 Ductile Iron Circular Drainage Grate - Ductile Cast Iron Grate - Hubei Luzhongbao Metal Products Co., Ltd\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#website\"},\"datePublished\":\"2025-07-29T05:58:21+00:00\",\"dateModified\":\"2025-07-29T05:58:23+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#\\\/schema\\\/person\\\/e22c08e75b650a9d574f5aeabb3db2cf\"},\"description\":\"This QT500-7 ductile iron grate revolutionizes drainage efficiency with vortex-flow design and quintuple safety protection. Its V-shaped bars and nano-coating reduce clogging risk by 70%, while 25-year maintenance-free operation redefines drainage infrastructure standards\u2014a benchmark for public safety, lifecycle economy, and ecological resilience.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/ductile-cast-iron-grate\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\\\/\\\/luzhongbao.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"700\u00d7800 Ductile Iron Circular Drainage Grate\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#website\",\"url\":\"https:\\\/\\\/luzhongbao.com\\\/\",\"name\":\"Hubei Luzhongbao Metal Products Co., Ltd\",\"description\":\"The Globally Trusted Manhole Cover Expert\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/luzhongbao.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#\\\/schema\\\/person\\\/e22c08e75b650a9d574f5aeabb3db2cf\",\"name\":\"luzhongbao\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g\",\"caption\":\"luzhongbao\"},\"sameAs\":[\"https:\\\/\\\/x.com\\\/Levi_Luzhongbao\"],\"url\":\"https:\\\/\\\/luzhongbao.com\\\/vi\\\/author\\\/luzhongbao\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"L\u01b0\u1edbi tho\u00e1t n\u01b0\u1edbc tr\u00f2n b\u1eb1ng gang d\u1ebbo 700\u00d7800 - L\u01b0\u1edbi tho\u00e1t n\u01b0\u1edbc b\u1eb1ng gang d\u1ebbo - C\u00f4ng ty TNHH S\u1ea3n ph\u1ea9m kim lo\u1ea1i Hubei Luzhongbao","description":"L\u01b0\u1edbi gang d\u1ebbo QT500-7 n\u00e0y mang \u0111\u1ebfn m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng v\u1ec1 hi\u1ec7u qu\u1ea3 tho\u00e1t n\u01b0\u1edbc v\u1edbi thi\u1ebft k\u1ebf d\u00f2ng ch\u1ea3y xo\u00e1y v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 an to\u00e0n g\u1ea5p n\u0103m l\u1ea7n. C\u00e1c thanh h\u00ecnh ch\u1eef V v\u00e0 l\u1edbp ph\u1ee7 nano gi\u00fap gi\u1ea3m nguy c\u01a1 t\u1eafc ngh\u1ebdn t\u1edbi 70%, trong khi kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec trong 25 n\u0103m gi\u00fap \u0111\u1ecbnh ngh\u0129a l\u1ea1i c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng tho\u00e1t n\u01b0\u1edbc - m\u1ed9t chu\u1ea9n m\u1ef1c v\u1ec1 an to\u00e0n c\u00f4ng c\u1ed9ng, hi\u1ec7u qu\u1ea3 kinh t\u1ebf theo v\u00f2ng \u0111\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sinh th\u00e1i.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/luzhongbao.com\/vi\/vi-gang-deo\/","og_locale":"vi_VN","og_type":"article","og_title":"700\u00d7800 Ductile Iron Circular Drainage Grate - Ductile Cast Iron Grate - Hubei Luzhongbao Metal Products Co., Ltd","og_description":"This QT500-7 ductile iron grate revolutionizes drainage efficiency with vortex-flow design and quintuple safety protection. Its V-shaped bars and nano-coating reduce clogging risk by 70%, while 25-year maintenance-free operation redefines drainage infrastructure standards\u2014a benchmark for public safety, lifecycle economy, and ecological resilience.","og_url":"https:\/\/luzhongbao.com\/vi\/vi-gang-deo\/","og_site_name":"Hubei Luzhongbao Metal Products Co., Ltd","article_published_time":"2025-07-29T05:58:21+00:00","article_modified_time":"2025-07-29T05:58:23+00:00","author":"luzhongbao","twitter_card":"summary_large_image","twitter_creator":"@Levi_Luzhongbao","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"luzhongbao","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"2 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/#article","isPartOf":{"@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/"},"author":{"name":"luzhongbao","@id":"https:\/\/luzhongbao.com\/#\/schema\/person\/e22c08e75b650a9d574f5aeabb3db2cf"},"headline":"700\u00d7800 Ductile Iron Circular Drainage Grate","datePublished":"2025-07-29T05:58:21+00:00","dateModified":"2025-07-29T05:58:23+00:00","mainEntityOfPage":{"@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/"},"wordCount":446,"commentCount":0,"keywords":["Ductile Cast Iron","Grate"],"articleSection":["Ductile Cast Iron Products","Grate","Products","Round Manhole Cover"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/","url":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/","name":"L\u01b0\u1edbi tho\u00e1t n\u01b0\u1edbc tr\u00f2n b\u1eb1ng gang d\u1ebbo 700\u00d7800 - L\u01b0\u1edbi tho\u00e1t n\u01b0\u1edbc b\u1eb1ng gang d\u1ebbo - C\u00f4ng ty TNHH S\u1ea3n ph\u1ea9m kim lo\u1ea1i Hubei Luzhongbao","isPartOf":{"@id":"https:\/\/luzhongbao.com\/#website"},"datePublished":"2025-07-29T05:58:21+00:00","dateModified":"2025-07-29T05:58:23+00:00","author":{"@id":"https:\/\/luzhongbao.com\/#\/schema\/person\/e22c08e75b650a9d574f5aeabb3db2cf"},"description":"L\u01b0\u1edbi gang d\u1ebbo QT500-7 n\u00e0y mang \u0111\u1ebfn m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng v\u1ec1 hi\u1ec7u qu\u1ea3 tho\u00e1t n\u01b0\u1edbc v\u1edbi thi\u1ebft k\u1ebf d\u00f2ng ch\u1ea3y xo\u00e1y v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 an to\u00e0n g\u1ea5p n\u0103m l\u1ea7n. C\u00e1c thanh h\u00ecnh ch\u1eef V v\u00e0 l\u1edbp ph\u1ee7 nano gi\u00fap gi\u1ea3m nguy c\u01a1 t\u1eafc ngh\u1ebdn t\u1edbi 70%, trong khi kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec trong 25 n\u0103m gi\u00fap \u0111\u1ecbnh ngh\u0129a l\u1ea1i c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng tho\u00e1t n\u01b0\u1edbc - m\u1ed9t chu\u1ea9n m\u1ef1c v\u1ec1 an to\u00e0n c\u00f4ng c\u1ed9ng, hi\u1ec7u qu\u1ea3 kinh t\u1ebf theo v\u00f2ng \u0111\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sinh th\u00e1i.","breadcrumb":{"@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/luzhongbao.com\/ductile-cast-iron-grate\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/luzhongbao.com\/"},{"@type":"ListItem","position":2,"name":"700\u00d7800 Ductile Iron Circular Drainage Grate"}]},{"@type":"WebSite","@id":"https:\/\/luzhongbao.com\/#website","url":"https:\/\/luzhongbao.com\/","name":"C\u00f4ng ty TNHH s\u1ea3n ph\u1ea9m kim lo\u1ea1i H\u1ed3 B\u1eafc Luzhongbao","description":"Chuy\u00ean gia v\u1ec1 n\u1eafp h\u1ed1 ga \u0111\u00e1ng tin c\u1eady tr\u00ean to\u00e0n c\u1ea7u","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/luzhongbao.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/luzhongbao.com\/#\/schema\/person\/e22c08e75b650a9d574f5aeabb3db2cf","name":"luzhongbao","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/secure.gravatar.com\/avatar\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/1ac515e20f844126be310a41cfa092daaf1e2b3b291d9328ac9dba05b400b569?s=96&d=mm&r=g","caption":"luzhongbao"},"sameAs":["https:\/\/x.com\/Levi_Luzhongbao"],"url":"https:\/\/luzhongbao.com\/vi\/author\/luzhongbao\/"}]}},"_links":{"self":[{"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/posts\/943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/comments?post=943"}],"version-history":[{"count":1,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/posts\/943\/revisions"}],"predecessor-version":[{"id":945,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/posts\/943\/revisions\/945"}],"wp:attachment":[{"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/media?parent=943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/categories?post=943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/luzhongbao.com\/vi\/wp-json\/wp\/v2\/tags?post=943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}