If the large-diameter spiral steel pipe is processed to a certain length, bending must exist, wh...
(1) After steel pipeline pickling, the rust and oil on the inner wall of the pipe are completely...
Basic requirements for the appearance of straight seam steel pipe welds 1. Surface of welde...
There are many methods for quality inspection of large-diameter longitudinally welded pipes , amo...
Maybe you have never paid attention to such details, you must choose a suitable venue and warehouse ...
1. The acceptance principle of spiral steel pipe The quality inspection and acceptance of the ...
In recent years, the demand for steel pipe insulation pipes in various domestic industries has incre...
All of us know the common defects of spiral welded pipes in the welding area. Here. We liste...
1. The appearance of the storage and delivery of anti-corrosion steel pipes needs to be checked ...
1. Metallurgical properties of the material The raw material of the spiral welded pipe is a hot-ro...
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