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  • North Husbandry Machinery (QZ) Co., Ltd.
  • ADD:West Side of Dongfang North Road,Economic Development Zone,Qingzhou,Weifang,Shandong, China(mainland)
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  • Structure tube for greenhouse
    May 21, 2018

    1. Hot dip galvanized steel pipe structure: The hot dip galvanizing pipe reacts the molten metal with the iron matrix to produce an alloy layer, so that the base body and the plating layer are combined. The hot-dip galvanized pipe supplied by Tianjin Feilong Pipe Co., Ltd. is the first to pickle the steel pipe. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it passes through an ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride. The mixed aqueous tank is cleaned and sent to a hot dip tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The galvanized steel pipe substrate and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant and compact zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe base body. Therefore, its corrosion resistance is strong.

    2, galvanized with pipe structure: galvanized pipe to the production of hot dip galvanized pipe production process has been adjusted. The strips used for pipe making are pickled first to remove the iron oxide on the strip surface. Then air-dried and then made into tubes. With a uniform coating, bright, very little galvanizing, lower cost than the production of hot galvanized pipe. Its corrosion resistance is slightly worse than hot galvanized tubes!