The quality inspection method for spiral steel pipe is as follows: 1 Judging from the surface,...
The welding method of thick-walled steel pipes should be selected according to the material and ...
Commonly used steel pipeline corrosion coatings include traditional petroleum asphalt or asphalt...
Shoddy steel pipes are prone to folding. Folding is a variety of fold lines formed on the surfac...
1. Thermomechanical treatment High-temperature thermomechanical treatment can improve the yield ra...
1. The premise is to polish the galvanized steel pipe The galvanized layer at the weld must be...
1. Argon arc welding is a welding technique that uses argon as a shielding gas. Also known as argon ...
The specification of the connection method of galvanized steel pipe depends on the type of conne...
The surface quenching and tempering heat treatment of straight seam welded steel pipe is usually...
Steel elbow processing and forming process 1. Die forging. For socket welding and threaded tee...
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