Welcome to http://www.srtsteelpipe.com
   
Company News
Contact Us
Company News

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  

Home - News > Company NewsCompany News
A detailed explanation of the production process of straight seam steel pipe

A detailed explanation of the production process of straight seam steel pipe

Keywords :A detailed explanation of the production process of straight seam steel pipe        Update : 2022-07-15        View(s) : 55

1) Work before molding The raw materials are strip coil, welding wire, and flux. They must undergo strict physical and chemical inspections before being put into use. The head and tail of the strip are butted by single wire or double wire submerged arc welding, and automatic submerged arc welding ...

Thick-walled steel pipe

Thick-walled steel pipe

Keywords :Thick-walled steel pipe        Update : 2022-07-13        View(s) : 60

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...

Straight seam steel pipe expansion technology

Straight seam steel pipe expansion technology

Keywords :Straight seam steel pipe expansion technology        Update : 2022-07-12        View(s) : 70

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...

What should be done at the end of cooling of large diameter steel pipes

What should be done at the end of cooling of large diameter steel pipes

Keywords :What should be done at the end of cooling of large diameter steel pipes        Update : 2022-07-07        View(s) : 108

(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...

The difference between socket welding flange and flat welding flange

The difference between socket welding flange and flat welding flange

Keywords :The difference between socket welding flange and flat welding flange        Update : 2022-07-05        View(s) : 102

Socket welding steel flange is suitable for small diameter, high pressure, and high-temperature pipeline connection. Flat welding has a boss-like butt welding, a groove is opened on the boss, and then the pipe is inserted into it for welding. Socket welding means that there is no boss, and a...

Page(s):  1 2 3 4 5 6 7 8 9 10 11 12 ... 129