The grade and chemical composition of the steel used for galvanized steel pipes should comply with the grade and chemical composition of the black pipe steel specified in GB 3092.<\/p>\n
2. Manufacturing Method<\/strong><\/h6>\nThe manufacturing method of the black tube (either by gas welding or electric welding) is chosen by the manufacturer. Galvanization is carried out using the hot-dip galvanizing process.<\/p>\n
3. Threads and pipe joints<\/strong><\/h6>\n3.1 Galvanized steel pipes delivered with threaded ends should have the threads machined after the galvanizing process. The threads must comply with the provisions of YB 822.
\n3.2 The steel pipe joints should comply with the provisions of YB 238; the malleable cast iron pipe joints should conform to the regulations of YB 230.
\n4.<\/strong> Mechanical Properties The mechanical properties of the steel pipe before galvanization should comply with the provisions of GB 3092.
\n5. Uniformity of galvanization coating:<\/strong> Galvanized steel pipes should undergo a test for the uniformity of the galvanization coating. The steel pipe samples should be continuously immersed in a copper sulfate solution for 5 times without turning red (copper-colored).<\/p>\n![\"\"](\"http:\/\/www.shandongruiying.com\/wp-content\/uploads\/2026\/03\/WPS\u56fe\u72472-1-scaled.jpeg\")
<\/p>\n
Application<\/h3>\n
Hot-dip galvanized pipes are formed by reacting molten metal with the iron substrate to create an alloy layer, thereby combining the substrate and the coating. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface. After acid washing, it is cleaned in a solution of ammonium chloride or zinc chloride or a mixed solution of ammonium chloride and zinc chloride in a tank, and then sent to the hot-dip galvanizing tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life. During hot-dip galvanizing, the coating undergoes complex physical and chemical reactions with the molten coating solution, forming a corrosion-resistant, tightly structured zinc-iron alloy layer. The alloy layer integrates with the pure zinc layer and the steel pipe substrate, thus having strong corrosion resistance.<\/p>","protected":false},"excerpt":{"rendered":"
Hot-dip galvanized pipes are formed by allowing molten metal to react with the iron substrate, creating an alloy layer that binds the substrate and the coating together. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface.<\/p>","protected":false},"featured_media":7356,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Hot-Dip Galvanized Steel Pipe: Process, Advantages and Corrosion Resistance Explained","_seopress_titles_desc":"Learn how hot-dip galvanized steel pipes are produced through acid cleaning and molten zinc coating. Discover the benefits of uniform coating, strong adhesion, and long-lasting corrosion resistance for industrial and construction applications.","_seopress_robots_index":"","_seopress_analysis_target_kw":"hot dip galvanized steel pipe,hot dip galvanized pipe,galvanized steel pipe manufacturing process,galvanized pipe corrosion resistance,zinc coated steel pipe,hot dip galvanizing process,galvanized steel pipe advantages,industrial galvanized pipes,corrosion resistant steel pipe,galvanized pipe 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Ruiying Import and Export Trading Co., Ltd.","author_link":"https:\/\/www.shandongruiying.com\/vi\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Hot-dip galvanized pipes are formed by allowing molten metal to react with the iron substrate, creating an alloy layer that binds the substrate and the coating together. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface.","_links":{"self":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product\/7353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/media\/7356"}],"wp:attachment":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/media?parent=7353"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_brand?post=7353"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_cat?post=7353"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_tag?post=7353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
3.1 Galvanized steel pipes delivered with threaded ends should have the threads machined after the galvanizing process. The threads must comply with the provisions of YB 822. Hot-dip galvanized pipes are formed by reacting molten metal with the iron substrate to create an alloy layer, thereby combining the substrate and the coating. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface. After acid washing, it is cleaned in a solution of ammonium chloride or zinc chloride or a mixed solution of ammonium chloride and zinc chloride in a tank, and then sent to the hot-dip galvanizing tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life. During hot-dip galvanizing, the coating undergoes complex physical and chemical reactions with the molten coating solution, forming a corrosion-resistant, tightly structured zinc-iron alloy layer. The alloy layer integrates with the pure zinc layer and the steel pipe substrate, thus having strong corrosion resistance.<\/p>","protected":false},"excerpt":{"rendered":" Hot-dip galvanized pipes are formed by allowing molten metal to react with the iron substrate, creating an alloy layer that binds the substrate and the coating together. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface.<\/p>","protected":false},"featured_media":7356,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Hot-Dip Galvanized Steel Pipe: Process, Advantages and Corrosion Resistance Explained","_seopress_titles_desc":"Learn how hot-dip galvanized steel pipes are produced through acid cleaning and molten zinc coating. Discover the benefits of uniform coating, strong adhesion, and long-lasting corrosion resistance for industrial and construction applications.","_seopress_robots_index":"","_seopress_analysis_target_kw":"hot dip galvanized steel pipe,hot dip galvanized pipe,galvanized steel pipe manufacturing process,galvanized pipe corrosion resistance,zinc coated steel pipe,hot dip galvanizing process,galvanized steel pipe advantages,industrial galvanized pipes,corrosion resistant steel pipe,galvanized pipe 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Ruiying Import and Export Trading Co., Ltd.","author_link":"https:\/\/www.shandongruiying.com\/vi\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Hot-dip galvanized pipes are formed by allowing molten metal to react with the iron substrate, creating an alloy layer that binds the substrate and the coating together. Hot-dip galvanizing involves first acid-washing the steel pipe to remove the iron oxide on its surface.","_links":{"self":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product\/7353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/media\/7356"}],"wp:attachment":[{"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/media?parent=7353"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_brand?post=7353"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_cat?post=7353"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shandongruiying.com\/vi\/wp-json\/wp\/v2\/product_tag?post=7353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n3.2 The steel pipe joints should comply with the provisions of YB 238; the malleable cast iron pipe joints should conform to the regulations of YB 230.
\n4.<\/strong> Mechanical Properties The mechanical properties of the steel pipe before galvanization should comply with the provisions of GB 3092.
\n5. Uniformity of galvanization coating:<\/strong> Galvanized steel pipes should undergo a test for the uniformity of the galvanization coating. The steel pipe samples should be continuously immersed in a copper sulfate solution for 5 times without turning red (copper-colored).<\/p>\n<\/p>\nApplication<\/h3>\n