1. Natural gas pipelines in operation: remove corrosive substances such as accumulated water, li...
(A) If the entire steel pipe is cooled to the martensitic transformation stop temperature (Mf point)...
Flange connection is an important connection method for pipeline construction. ...
1. First of all, ensure that the water quality meets the standards, and strictly monitor and man...
From the overall measurement of material performance, construction, cost, and use effect, epoxy ...
1.1 Manual welding with cellulose downward electrode When there is a pipeline with sever...
The lining stainless steel composite steel pipe (304+Q235B) is a new type of composite pipe, w...
1. According to national standards: integral flange, threaded flange , butt welding flange, fla...
Non-destructive testing of the inside of the weld. Because the pipeline belongs to the extra-lar...
1. During the forming process, the steel plate deforms evenly, the residual stress is small, and...
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