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...
A. Visual inspection Visually inspects the appearance quality of the coated steel pipe ...
1. Thick-walled steel pipe cutting: According to the actual required pipeline length, the pipe s...
1. The welding process adopted by submerged arc steel pipe is submerged arc welding technology, ...
1. Welded steel pipe for low-pressure fluid transportation is also called a general welded pip...
The number of rigs drilling for oil and gas set a fresh record low in July, as activity continue...
Oil edged up with support from U.S. equities, but pandemic-driven demand concerns capped the p...
1. The arc starting of stainless steel pipe fittings adopts the re-welding method, and the arc...
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