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The simple difference between ERW steel pipe and HFW steel pipe
Resistance welding, as the name implies, is a method in which pressure is applied through electrodes after the weldment is assembled, and the resistance heat generated by the current passing through the contact surface of the joint and the adjacent area is used for welding. High-frequency welding...Read more -
Anti-corrosion technology of anti-corrosion steel pipe
In recent years, the demand for steel pipe insulation pipes in various domestic industries has increased. The production process of domestic steel pipe anti-corrosion plants has been relatively mature, and all kinds of anti-corrosion can be produced. Among them, 3PE anti-corrosion steel pipes hav...Read more -
What are the factors that cause horizontal stripes in spiral seam submerged arc welded steel pipes
The first may be due to the stress of the spiral seam submerged arc welded steel pipe. That is, the residual stress and welding stress after the steel pipe is formed. Secondly due to the presence of hydrogen. If the flux is not dried enough, the preheating temperature is not sufficient or the pre...Read more -
Stainless Steel Elbow Features
1. Stainless steel stamping elbow will not produce corrosion, pitting, rust, or wear. Stainless steel is also the strongest material among metal materials for construction. 2. The stainless steel pipe fitting elbow has excellent corrosion resistance. The thin and strong oxide film on the surface ...Read more -
Preliminary preparation for sawing of spiral steel pipe
After a series of treatments such as forming, welding and cooling, the spiral steel pipe still needs to be sawed. In this link, the length of the technical spare ruler directly affects the quality and sales of the finished welded pipe, so the length of the spare ruler should be controlled within ...Read more -
Common methods for anti-corrosion of 3PE anti-corrosion steel pipes
1. Pipeline anti-corrosion generally uses two common methods: outer coating and cathodic protection. 2. Although the vast majority of the surface of the pipeline is covered by the coating, the slightest leak will cause an incredible corrosion rate, or even a hole or crack. Therefore, the coating ...Read more