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 :Thick-walled steel pipe Update : 2022-07-13 View(s) : 675
Thick-walled steel pipes refer to steel pipes whose outer diameter and wall thickness ratio is less than 20 than thick-walled steel pipes . Mainly used as petroleum geological drilling pipe, cracking pipe for the petrochemical industry, boiler pipe, bearing pipe, and high-precision structural p...
Keywords :Straight seam steel pipe expansion technology Update : 2022-07-12 View(s) : 739
1. Preliminary rounding stage: the fan-shaped blocks are opened until all the fan-shaped blocks are in contact with the inner wall of the steel pipe. At this time, the radius of each point in the inner circular pipe of the steel pipe within the step range is almost the same, and the steel pipe is in...
Keywords :Horizontal fixed welding of thick-walled stainless steel pipes Update : 2022-07-11 View(s) : 937
Stainless steel pipe is a kind of hollow long steel, which is widely used as a pipeline for conveying fluids, such as oil, natural gas, water, gas, steam, etc. Stainless steel pipes are light in weight when they have the same bending and torsional strength and are widely used in the manufactur...
Keywords :A detailed explanation of the welding process of large diameter straight seam steel pipe Update : 2022-07-08 View(s) : 871
The double wire automatic welding of straight seam steel pipe is a welding technology developed in recent years. In addition to the characteristics of semi-automatic single wire welding, it also has the welding characteristics of energy concentration and high deposition efficiency. The main and ...
Keywords :What should be done at the end of cooling of large diameter steel pipes Update : 2022-07-07 View(s) : 824
(1) When the cooling is completed, that is, when the temperatures of the surface layer and the core part are all the same, the elastic deformation of the surface layer and the core part also disappears and returns to the original state. Although transient thermal stress is generated during the cooli...