The minimum covering soil thickness for the burial of underground gas pipelines shall meet the f...
There are two types of oil pipelines : crude oil pipelines and refined oil pipelines . Differe...
1. The trademark and printing of the high-quality tube are comparable to the standard. 2. The comp...
The pressure ratio of the spiral steel pipe on the gas pipeline also has a downward trend. For p...
(1) Effective electrical insulation. (2) It has good moisture and water resistance. (3) It has s...
1. What is the heat treatment process of large-diameter steel pipes ? (1) During the heat treat...
Welded steel pipes can be classified into different types and types according to different class...
There is a significant difference between straight seam steel pipe and steel pipe. I believe man...
After a series of treatments such as forming, welding and cooling, the spiral steel pipe still n...
The causes of surface defects of seamless steel pipes are intricate and complicated. There are h...
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