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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 -
Main technical characteristics of spiral steel pipe
During the forming process of the spiral steel pipe, the steel plate is uniformly deformed, the residual stress is small, and the surface has no scratches. The processed spiral steel pipe has more flexibility in the diameter and wall thickness size range, especially in the production of high stee...Read more -
What are the advantages of using straight seam welded pipe to transport fluids
1. The infrastructure cost is low. Compared with railway transportation, the infrastructure cost can be saved by three points, and the transportation volume is twice that of the railway. 2. The construction is simple, the construction speed is fast, and it is generally laid underground, which is ...Read more