The external layers of galvanized metal are mostly zinc and the subsequent layers are made up of zinc and iron and the interior layer is pure steel. Some buildings (indoor skating rinks) are product of stainless-steel in the development of the roof of the Yongping overlapping layer, Stainless Steel Tubing not solely to make the building from the design viewpoint nice, but also because of the reflective surface of chrome steel, so that the indoor ice season to extend the rabbit Bear unreasonable investment.
Not one of the traces surveyed acknowledged that they have any “should do” projects deliberate for this galvanizing line. Adjustment screws are fixed to lock the strips in order that as the mandrel starts to recoil, the strips would not detach or slip off. Furthermore, in keeping with the provisions of submerged arc course of, mild steel square tube each weld shall have the arc on the place and extinction, but in every Longitudinal seam welding ring, unable to satisfy the situations, which may have a spot in the extinction more weld defects.