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\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0627\u0631\u0626 \u062e\u0644\u0627\u0644 \u0667\u0662 \u0633\u0627\u0639\u0629\u060c \u0645\u0639 \u0642\u062f\u0631\u0629 \u0625\u0646\u062a\u0627\u062c \u0645\u062e\u0635\u0635\u0629 \u062a\u063a\u0637\u064a \u0633\u064a\u0646\u0627\u0631\u064a\u0648\u0647\u0627\u062a \u062e\u0627\u0635\u0629 \u0645\u062b\u0644 \u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0623\u0639\u0645\u062f\u0629 \u063a\u064a\u0631 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0648\u0627\u0644\u0623\u0639\u0645\u062f\u0629 \u0627\u0644\u0645\u0627\u0626\u0644\u0629. \u0648\u0642\u062f \u0637\u064f\u0628\u0642 \u0627\u0644\u0645\u0646\u062a\u062c \u0628\u0646\u062c\u0627\u062d \u0641\u064a \u0623\u0643\u062b\u0631 \u0645\u0646 \u0663\u0660\u0660 \u0645\u0634\u0631\u0648\u0639 \u0628\u0644\u062f\u064a \u0639\u0644\u0649 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0628\u0644\u0627\u062f\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0645\u0634\u0627\u0631\u064a\u0639 \u0631\u0626\u064a\u0633\u064a\u0629 \u0645\u062b\u0644 \u062a\u062c\u062f\u064a\u062f \u0623\u0639\u0645\u062f\u0629 \u062a\u0647\u0648\u064a\u0629 \u0645\u062a\u0631\u0648 \u0623\u0646\u0641\u0627\u0642 \u0628\u0643\u064a\u0646 \u0648\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u062a\u0637\u0648\u064a\u0631 \u0627\u0644\u0634\u0627\u0645\u0644 \u0644\u0623\u062d\u064a\u0627\u0621 \u0634\u0646\u063a\u0647\u0627\u064a \u0627\u0644\u0642\u062f\u064a\u0645\u0629\u060c \u062d\u064a\u062b \u0646\u062c\u062d \u0641\u064a \u0645\u0646\u0639 \u0623\u0643\u062b\u0631 \u0645\u0646 \u0662\u0660\u0660 \u062d\u0627\u0644\u0629 \u0633\u0642\u0648\u0637\u060c \u0645\u0639 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0633\u062c\u0644 \u062e\u0627\u0644\u064d \u0645\u0646 \u0627\u0644\u062d\u0648\u0627\u062f\u062b.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u064a\u0632\u0629 \u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0644\u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629 \u0627\u0644\u0643\u0627\u0645\u0644\u0629<\/h3>\n\n\n\n<p>\u0639\u0644\u0649 \u0627\u0644\u0631\u063a\u0645 \u0645\u0646 \u0623\u0646 \u0633\u0639\u0631 \u0627\u0644\u0648\u062d\u062f\u0629 \u0623\u0639\u0644\u0649 \u0628\u0645\u0642\u062f\u0627\u0631 15%-20% \u0645\u0646 \u0633\u0639\u0631 \u0634\u0628\u0643\u0627\u062a \u0645\u0646\u0639 \u0627\u0644\u0633\u0642\u0648\u0637 \u0627\u0644\u0639\u0627\u062f\u064a\u0629\u060c \u0625\u0644\u0627 \u0623\u0646 \u0639\u0645\u0631 \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0637\u0648\u064a\u0644 \u0644\u0644\u063a\u0627\u064a\u0629 \u0627\u0644\u0630\u064a \u064a\u0635\u0644 \u0625\u0644\u0649 25 \u0639\u0627\u0645\u064b\u0627 (\u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a \u0627\u0644\u0639\u0627\u062f\u064a\u0629 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0647\u0627 \u0645\u0631\u062a\u064a\u0646 \u0623\u0648 \u062b\u0644\u0627\u062b \u0645\u0631\u0627\u062a) \u0648\u062e\u0635\u0627\u0626\u0635\u0647\u0627 \u0627\u0644\u062e\u0627\u0644\u064a\u0629 \u0645\u0646 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u062a\u064f\u0624\u062f\u064a \u0625\u0644\u0649 \u0627\u0646\u062e\u0641\u0627\u0636 \u0641\u064a \u062a\u0643\u0644\u0641\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629 \u0627\u0644\u0643\u0627\u0645\u0644\u0629 \u0628\u0623\u0643\u062b\u0631 \u0645\u0646 40%. \u0648\u0628\u0641\u0636\u0644 \u0646\u0638\u0627\u0645 \u062a\u062a\u0628\u0639 \u0633\u0644\u0633\u0644\u0629 \u0627\u0644\u0643\u062a\u0644 (blockchain)\u060c \u062a\u064f\u0633\u062c\u0644 \u0628\u064a\u0627\u0646\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0645\u0646 \u0643\u0644 \u062e\u0637\u0648\u0629 \u0639\u0644\u0649 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0641\u064a \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0641\u0639\u0644\u064a.<\/p>","protected":false},"excerpt":{"rendered":"<p>The lzbmetal&nbsp;550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. Its standard inner diameter of 550mm fits most municipal shaft openings, and the 10mm thickened cast iron mesh structure can withstand instantaneous impact loads exceeding 1000kg. The product strictly [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,2,8],"tags":[126,114,63],"class_list":["post-1480","post","type-post","status-publish","format-standard","hentry","category-ductile-cast-iron-products","category-products","category-round-manhole-cover","tag-ductile-cast-iron","tag-luzhongbao","tag-manhole-cover"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd<\/title>\n<meta name=\"description\" content=\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. Its standard inner diameter of 550mm fits most municipal shaft openings, and the 10mm thickened cast iron mesh structure can withstand instantaneous impact loads exceeding 1000kg. The product strictly complies with the GB\/T 23858 national standard and is manufactured through one-time casting using QT500-7 grade ductile iron. Through unique annular grid densification technology and a three-dimensional reinforcement rib support system, it achieves a balance between protection strength and ventilation\/light transmission within a limited space, effectively preventing accidental falls of personnel or small objects. It is particularly suitable for areas with high public safety requirements such as schools, plazas, and old residential communities.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lzbmetal.com\/ar\/\u0634\u0628\u0643\u0629-\u0644\u0648\u0632\u0647\u0648\u0646\u063a\u0628\u0627\u0648-\u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629-\u0645\u0646-\u0627\u0644\u062d\u062f\u064a\u062f-\u0627\u0644-2\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd\" \/>\n<meta property=\"og:description\" content=\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. Its standard inner diameter of 550mm fits most municipal shaft openings, and the 10mm thickened cast iron mesh structure can withstand instantaneous impact loads exceeding 1000kg. The product strictly complies with the GB\/T 23858 national standard and is manufactured through one-time casting using QT500-7 grade ductile iron. Through unique annular grid densification technology and a three-dimensional reinforcement rib support system, it achieves a balance between protection strength and ventilation\/light transmission within a limited space, effectively preventing accidental falls of personnel or small objects. It is particularly suitable for areas with high public safety requirements such as schools, plazas, and old residential communities.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lzbmetal.com\/ar\/\u0634\u0628\u0643\u0629-\u0644\u0648\u0632\u0647\u0648\u0646\u063a\u0628\u0627\u0648-\u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629-\u0645\u0646-\u0627\u0644\u062d\u062f\u064a\u062f-\u0627\u0644-2\/\" \/>\n<meta property=\"og:site_name\" content=\"LZBMetal Products Co., Ltd\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-01T03:56:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-01T07:17:19+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=\"\u0643\u064f\u062a\u0628 \u0628\u0648\u0627\u0633\u0637\u0629\" \/>\n\t<meta name=\"twitter:data1\" content=\"luzhongbao\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u0648\u0642\u062a \u0627\u0644\u0642\u0631\u0627\u0621\u0629 \u0627\u0644\u0645\u064f\u0642\u062f\u0651\u0631\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u062f\u0642\u0627\u0626\u0642\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\"},\"author\":{\"name\":\"luzhongbao\",\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/#\\\/schema\\\/person\\\/03225aba1019488054ecea53728c5cf0\"},\"headline\":\"lzbmetal\u00a0550\u00d710 Cast Iron Anti-Falling Net: The Safety Guardian in Underground Shafts\",\"datePublished\":\"2025-12-01T03:56:00+00:00\",\"dateModified\":\"2025-12-01T07:17:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\"},\"wordCount\":748,\"commentCount\":0,\"keywords\":[\"Ductile Cast Iron\",\"Luzhongbao\",\"Manhole Cover\"],\"articleSection\":[\"Ductile Cast Iron Products\",\"Products\",\"Round Manhole Cover\"],\"inLanguage\":\"ar\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\",\"url\":\"https:\\\/\\\/lzbmetal.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\",\"name\":\"Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/#website\"},\"datePublished\":\"2025-12-01T03:56:00+00:00\",\"dateModified\":\"2025-12-01T07:17:19+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/lzbmetal.com\\\/#\\\/schema\\\/person\\\/03225aba1019488054ecea53728c5cf0\"},\"description\":\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. 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