The most common connection method for large-diameter spiral steel pipes is welding, but in some ...
(1) Gas pipeline preparation before construction â‘ Although the melting point of molten lead re...
1. Different nature A. High-frequency welded steel pipe : After the hot-rolled coil is formed b...
There are two types of oil pipelines : crude oil pipelines and refined oil pipelines . Differe...
The pressure ratio of the spiral steel pipe on the gas pipeline also has a downward trend. For p...
1. What is the heat treatment process of large-diameter steel pipes ? (1) During the heat treat...
There is a significant difference between straight seam steel pipe and steel pipe. I believe man...
The causes of surface defects of seamless steel pipes are intricate and complicated. There are h...
1. Fake and inferior thick-walled steel pipes are prone to folding. Folds are various fold lines...
There are 3 categories of trenchless repair technologies for steel pipelines (including more tha...
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