Classification Features hot galvanized pipe with a galvanized coating uniformity, strong adhesion hot-dip galvanizing line pipe prices, long life and other advantages. Steel substrate and the molten bath complicated physical, chemical reaction, the formation of corrosion-resistant compact structure of zinc-iron alloy layers. Alloy layer and the pure zinc layer, integrated steel substrate. So its resistant to corrosion. 1, the uniformity of the zinc coating: steel samples immersed in a copper sulfate solution five times in a row may not turn red (copper color) 2, surface quality: galvanized steel surfaces should have a full national standard galvanized zinc coating line pipe, not a not plated spots and bubbles exist, allowing a little rough surface and the presence of localized tumors zinc. 3, zinc coating weight: According to the requirements, galvanized steel pipe can be used for measuring the weight of the zinc layer enterprise standard hot-dip galvanizing line pipe, which should not be less than the average of 500g / m2, of which not less than any sample 480g / sqm . Galvanized steel is widely used in construction, machinery, coal, chemical, railway vehicles, the automotive industry, roads, bridges, container, sports facilities, agricultural machinery, petroleum machinery, mining machinery and other manufacturing industries. Galvanized pipe technical requirements, galvanized steel grades and chemical composition of steel grades and chemical composition shall conform to GB 3092 under the clarinet steel grades and chemical composition. 2, a manufacturing method clarinet (furnace brazed or welded) selected by the manufacturer. Galvanized hot dip galvanizing method. 3, threaded fittings and threaded delivery 3.1 galvanized steel, thread should be galvanized after car system. YB 822 threads shall comply with the provisions of. 3.2 steel pipe fittings shall comply with the provisions of YB 238; malleable iron pipe fittings shall comply with the provisions of YB 230. Hot-dip galvanizing line pipe prices, hot-dip galvanizing line pipe, line pipe manufacturer in Guangdong galvanized ducts days provided by the steel bridge, Ltd. Guangdong days. Guangdong days steel bridge Limited (www.nhtianlai.com) strong, credible, in Foshan, Guangdong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the day to ducts and you hand into the brilliant, for a better future!