Threeway Steel Co., Ltd
E-mail: sales@srtsteelpipe.com
Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116Phone:0086-731-8873-9521
Keywords :How to cool after the quenching process of large-diameter steel pipe Update : 2022-04-14 View(s) : 773
1. What is the heat treatment process of large-diameter steel pipes ? (1) During the heat treatment process, the reason for the change in the geometry of the large-diameter steel pipe is the effect of heat treatment stress. Heat treatment stress is a relatively complex problem. It is not only...
Keywords :Maintenance method of large diameter straight seam steel pipe Update : 2022-04-12 View(s) : 745
There is a significant difference between straight seam steel pipe and steel pipe. I believe many people think that the two are similar, the way of use and the performance they have, etc. Straight seam steel pipes are higher than steel pipes. The best types sold in the market are electric weld...
Keywords :Surface defects of seamless steel pipes and their causes Update : 2022-04-08 View(s) : 751
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...
Keywords :Identification method and technological process of fake and inferior steel pipes Update : 2022-04-06 View(s) : 771
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...
Keywords :What are the types of trenchless repair technologies for steel pipelines Update : 2022-04-01 View(s) : 706
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...