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Surface defects of seamless steel pipes and their causes

Surface defects of seamless steel pipes and their causes

Keywords :Surface defects of seamless steel pipes and their causes        Update : 2022-04-08        View(s) : 723

The causes of surface defects of seamless steel pipes are intricate and complicated. There are hundreds of influencing factors listed. Sometimes there are dozens of factors for the same defect, and the generation of defects has a great relationship with the steel type. This is why the production...

Quality inspection method of spiral steel pipe

Quality inspection method of spiral steel pipe

Keywords :Quality inspection method of spiral steel pipe        Update : 2022-04-07        View(s) : 881

1 Judging from the surface, that is, in visual inspection. Visual inspection of welded joints is a simple procedure with a wide variety of inspection methods and is an important part of finished product inspection, mainly to find welding surface defects and dimensional deviations. Tests are generall...

Identification method and technological process of fake and inferior steel pipes

Identification method and technological process of fake and inferior steel pipes

Keywords :Identification method and technological process of fake and inferior steel pipes        Update : 2022-04-06        View(s) : 738

1. Fake and inferior thick-walled steel pipes are prone to folding. Folds are various fold lines formed on the surface of thick-walled steel pipes , and this defect often runs through the longitudinal direction of the entire product. The reason for the folds is that the counterfeit and inferior...

What are the insulation methods of anti-corrosion steel pipes

What are the insulation methods of anti-corrosion steel pipes

Keywords :What are the insulation methods of anti-corrosion steel pipes        Update : 2022-04-02        View(s) : 819

Anti-corrosion steel pipe is a common steel pipe. In order to slow down and prevent the steel pipe from corroding and depreciating under the chemical and electrochemical action of internal and external media, or due to the metabolism of microorganisms, it is necessary to do a good job of anti-co...

What are the types of trenchless repair technologies for steel pipelines

What are the types of trenchless repair technologies for steel pipelines

Keywords :What are the types of trenchless repair technologies for steel pipelines        Update : 2022-04-01        View(s) : 680

There are 3 categories of trenchless repair technologies for steel pipelines (including more than 10 process technologies) First is to use the resin curing method to form a new drainage steel pipeline inside the steel pipeline , such as CIPP, on-site curing, and other processes; The secon...

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