For this problem, you can start from four aspects. 1. Try to choose high -quality welding materials. Under normal circumstances, if the material selected is more appropriate during
At present, some defect problems will still be encountered during the production of welded pipes. One of the more common defects is crack. Moreover, the impact of this defect on th
The requirements of square tube welding mainly include the following aspects: Preparation before welding: Strict surface cleaning should be performed before the square tube is weld
1. Anticorrosive treatment of galvanized pipes Galvanized pipes, as a steel pipe on the surface galvanized layer, are coated with a layer of zinc on the surface to enhance corrosio
The spiral steel pipe is a steel pipe made of steel plate rolling, and its surface is spiral. It has high pressure resistance, corrosion resistance, and strength, and is widely use
The steel pipe with a ratio of the outer diameter of the steel pipe and the ratio of wall thickness is called thick wall spiral pipe. It is mainly used for petroleum geological dri
1. The geometric characteristics of the cross section of the pipe are good, the tube wall is generally thin, the section materials are distributed around the shape, the cross -sect
Galvanized pipes, the pure zinc layer has densely covered the appearance of the steel. It can prevent any corrosive solution from contacting the steel matrix and maintain the corro
The role of thermal treatment is to improve the material performance of the steel pipe and precision steel pipes, eliminate residual stress, and improve the cutting processing perf
The spiral steel pipes bring the steel into the pipe unit, rolled through multiple rolled rolls, and rolled up gradually with steel to form a circular tube blank with open space. 3
Large -diameter spiral pipe joints not only affect the fineness of the pipe welding seams, constitute a pipe leakage, but also become the induction point of corrosion, which will s