ASTM A179 cold-drawn seamless pipe is mainly used for metal structure facilities in various industries. It is mainly used to immerse steel parts in zinc solution melted at 440-460 C after rusting, so that the steel surface adheres to the zinc layer and plays an anti-corrosion role. This is an effective method of metal corrosion. The main characteristics of its use are as follows:
(1) ASTM A179 cold-drawn seamless tube manufacturer covers the surface of cold-drawn seamless tube with thick and dense zinc layer, which can avoid the cold-drawn seamless tube matrix and any contact with corrosion solution, and protect the steel matrix from corrosion. In general atmosphere, a thin and dense surface of zinc oxide is formed on the surface of zinc layer, which is difficult to dissolve in water, thus protecting the steel matrix. If zinc oxide and other components in the atmosphere produce insoluble zinc salts, the anticorrosive effect is more ideal.
(2) It has iron-zinc alloy layer, compact combination, and unique corrosion resistance, in the marine atmosphere and atmospheric environment.
(3) ASTM A179 cold-drawn seamless pipe has strong wear resistance due to its solid bonding and zinc-iron mixing.
(4) Because zinc has good ductility, its alloy layer and steel base are attached to solid, so hot-rolled parts can be formed by cold rolling, rolling, stretching and bending without damaging the coating.
(5) Hot-dip galvanized steel structure, equivalent to annealing treatment, can effectively improve the mechanical properties of steel matrix, eliminate the forming welding stress of steel, and is conducive to the turning of steel structure.
(6) The surface of cold-drawn seamless tube after hot-dip galvanizing is bright and beautiful.
(7) Pure zinc coating is the hottest zinc-plating layer in the zinc-plating layer. Its properties are basically close to pure zinc, and it has ductility, so it has sufficient flexibility.