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 :straight seam steel tube Update : 2020-04-21 View(s) : 1080
1. Reasonable material selection, reasonable selection of heating temperature, and control of heating speed. 2. Correct heat treatment process operation and reasonable tempering heat treatment process are also useful methods to reduce the deformation of precision messy mol...
Keywords :plastic coated steel pipes Update : 2020-04-17 View(s) : 1255
1. Weld defect: Welding defects are more serious, which can be compensated by manual mechanical grinding treatment methods, and the resulting grinding marks will cause uneven surface and affect aesthetics. Only pickling and passivating the welding seam will also cause uneven surface. ...
Keywords :spiral welded pipe Update : 2020-04-16 View(s) : 1079
To solve the problem of decarburization on the surface, it is mainly to deal with the heat treatment process, because the decarburization and oxidation of the spiral welded pipe are carried out at the same time, so during the heat treatment process, the spiral welded pipe should be kept awa...
Keywords :steel pipes Update : 2020-04-15 View(s) : 1060
1. Only applicable to ferromagnetic materials. Because the step of magnetic flux leakage detection is magnetization, the magnetic permeability of the non-ferromagnetic material is close to 1, and the magnetic field around the defective part will not change in distribution due to different magnet...
Keywords : pipeline routing Update : 2020-04-10 View(s) : 1045
The construction of communication pipelines generally follows water, electricity, gas, heating, and pollution in urban planning. With the improvement of people's understanding of communication resources and the closeness of the relationship between people and communication systems, communication...