The simple and simple technological process for the production of spiral seam submerged arc welded...
Spiral steel pipes are mainly used in water supply engineering, the petrochemical industry, the ...
At present, there are two standards for 3PE anti-corrosion steel pipes , namely GB/T 23257-2009 a...
The quality inspection method for spiral steel pipe is as follows: 1 Judging from the surface,...
Commonly used steel pipeline corrosion coatings include traditional petroleum asphalt or asphalt...
1. Thermomechanical treatment High-temperature thermomechanical treatment can improve the yield ra...
1. Argon arc welding is a welding technique that uses argon as a shielding gas. Also known as argon ...
The surface quenching and tempering heat treatment of straight seam welded steel pipe is usually...
1. Optimization of sulfate galvanizing The advantage of sulfate galvanizing is that the current ef...
The high-frequency welding process of straight seam steel pipe is completed in the high-frequenc...
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