Spiral steel pipe is usually used in urban drainage pipelines. The use of spiral steel pipes i...
Corrosion of steel pipes is mainly divided into two categories: internal corrosion and external ...
Welding method: When welding thick-walled steel pipes , first clean the oil, paint, water, rust, ...
Let's first talk about the original surface of the stainless steel tube: NO.1 The surface that is su...
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 ...
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