Changsha Xiangjia Metal Materical Co., Ltd.

  Galvanized steel pipe  is one of types of galvanized products, and the product is very complicated. If customers do not know galvanized steel pipes well, there will be many problems when buy. Therefore, it is nessary to know basic knowledge and skills of galvanized steel pipe. Pay attention to the following points when buying galvanized steel pipe: 1. Appearance: There are regulations of industry standards on appearance quality requirements, especially in terms of delamination, scarring, cracks, etc. The regulations are specific, and there are also regulations for geometric deviations in the implementation standards, such as Curvature, side width, side thickness, top angle number, theoretical quality and other items have strict regulations, which can be well reflected in appearance, and are also a very effective basis for distinguishing the quality of galvanized steel pipes. 2. Chemical composition discrimination: It is scientific to distinguish by chemical composition, beca...

Seamless steel pipe  are widely used in industrial production due to its good performance. In order to protect seamless steel pipes from rust, we need to galvanize the seamless steel pipes. Usuallt, seamless steel pipe may be sold in a short period of time after produced in large amount. So that it is nessary to do zinc coating. So how do it proceed? There are two methods for galvanizing seamless steel pipes, hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing includes wet method, dry method, lead-zinc method, and redox method. Electro-galvanizing is a process that uses electrolysis to refer to the process of forming a uniform, dense, and well-bonded metal on the surface of a part. The galvanized zinc layer is very smooth and dense, and has good corrosion resistance and mechanical properties. The difference of hot-dip galvanizing and electro-galvanizing is how to improve the quality of seamless steel pipe after acid cleaning. Hot-hip galvanized used widel...