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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

Hotonline: 0086-187-7406-7534 

Phone:0086-731-8873-9521  

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Derusting grade of seamless steel pipe

Derusting grade of seamless steel pipe

Keywords :Derusting grade of seamless steel pipe        Update : 2020-12-22        View(s) : 522

The fundamental point of the surface treatment standard is four different rust levels: The surface of Grade A steel is completely covered with adhering oxide scale, and there is almost no rust. The surface of grade B steel has begun to rust, and the oxide scale has begun to peel off in flakes. ...

Galvanized pipe standard

Galvanized pipe standard

Keywords :Galvanized pipe standard        Update : 2020-12-16        View(s) : 466

Galvanized pipe, also known as galvanized steel pipe, is divided into two types: hot-dip galvanized and electro-galvanized. The hot-dip galvanized layer is thick and has the advantages of uniform coating, strong adhesion, and long service life. The cost of electro-galvanizing is low, the surface is ...

Source of Flange Casting Porosity and Improvement Measures

Source of Flange Casting Porosity and Improvement Measures

Keywords :Source of Flange Casting Porosity and Improvement Measures        Update : 2020-12-15        View(s) : 285

Flange castings are thin-walled gray iron castings. The production process is: resin sand boxless molding, the sand core adopts two processes: cold core box core making and coated sand hot core box core making. Water-based paint is applied to the sand mold as a whole. After drying in the drying tunn...

Problems that occur when welding thin-walled stainless steel pipes

Problems that occur when welding thin-walled stainless steel pipes

Keywords :Problems that occur when welding thin-walled stainless steel pipes        Update : 2020-12-09        View(s) : 306

1. Construction level issues: Welding is a very professional technique. Many experts, including on-site construction workers, believe that after welding, it cannot be disassembled. In many actual construction sites, it is very inconvenient to make changes, so many construction workers are unwillin...

What is the difference between straight seam steel pipe and high frequency straight seam steel pipe

What is the difference between straight seam steel pipe and high frequency straight seam steel pipe

Keywords :What is the difference between straight seam steel pipe and high frequency straight seam steel pipe        Update : 2020-12-08        View(s) : 278

Welded steel pipes with only one longitudinal weld are straight welded steel pipes. According to the regulations of GB/9711.1, the diameter of the straight-welded steel pipe is greater than 914.4, and the welding angle is 180°. The straight-sealed steel pipe can be the same twice. Ac...

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