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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: 410116

Phone:0086-731-8873-9521  

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plastic coated steel pipes

Common problems in the production and processing of plastic coated steel pipes

Keywords :plastic coated steel pipes        Update : 2020-04-17        View(s) : 1256

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. ...

spiral welded pipe

How to prevent decarburization of spiral welded pipe?

Keywords :spiral welded pipe        Update : 2020-04-16        View(s) : 1081

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...

steel pipes

Disadvantages of magnetic flux leakage detection of steel pipes

Keywords :steel pipes        Update : 2020-04-15        View(s) : 1062

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...

 pipeline routing

Choice of communication pipeline routing

Keywords : pipeline routing        Update : 2020-04-10        View(s) : 1049

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...

pipe acid passivated

Why is the pipe acid passivated by acid?

Keywords :pipe acid passivated        Update : 2020-04-09        View(s) : 1133

It is mainly for steel pipelines, which is prone to corrosion reactions, and there is a certain hidden danger to equipment damage after corrosion. After removing all kinds of dirt such as oil, rust, scale, welding spots, etc., the corrosion resistance of steel can be greatly improved. If...

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