galvanized weld steel pipe

       Galvanized pipe plating copper wire plating, belong to continuous plating, but the plating equipment is different. Iron wire is characterized by its elongated strip design tank, tank body long and wide but shallow. Electroplating iron wire through the hole, a zigzag spread at the liquid level, keep each other spacing. And galvanized pipe is different from iron wire, has its unique place, slot equipment is more complex. The tank body is composed of two parts, the upper part is the plating tank, the lower part is the solution circulation storage tank, forming a narrow on the lower wide, trapezoidal tank body, in the plating tank is provided with galvanized tube plating operation channel, the bottom of the tank has two through holes and the lower storage tank, and the formation of bath circulation reuse system with the liquid pump. Therefore, galvanized pipe with iron wire plating, plating parts are dynamic, and the difference with iron wire plating, galvanized pipe plating solution is dynamic.

      Hot dip galvanized steel pipe is to make molten metal react with iron substrate to produce alloy layer, so that the substrate and coating are combined. Hot dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, the steel pipe is cleaned by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution 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. Steel grade: q215a; Q215B; Q235A; Q235B.Test pressure value / MPA: d10.2-168.3mm is 3Mpa; 5 MPa for d177.8-323.9 mm. It is mainly used for conveying gas, heating, domestic water supply and drainage, fire protection, etc