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 :Derusting grade of seamless steel pipe Update : 2020-12-22 View(s) : 1484
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. ...
Keywords :Galvanized pipe standard Update : 2020-12-16 View(s) : 1466
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 ...
Keywords :Source of Flange Casting Porosity and Improvement Measures Update : 2020-12-15 View(s) : 1071
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...
Keywords :Problems that occur when welding thin-walled stainless steel pipes Update : 2020-12-09 View(s) : 1108
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...
Keywords :What is the difference between straight seam steel pipe and high frequency straight seam steel pipe Update : 2020-12-08 View(s) : 1153
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...