For the ASTM standard, the mechanical properties, chemical composition and metallurgical properties of different steels are different. There ...
Date:2018-04-20 Tags:ASTM Standard
The non standard steel pipe is a kind of steel pipe which is compared with the national standard for the seamless steel pipe except the sta...
Date:2018-04-20 Tags:Nonstandard steel pipe
Black erw steel pipe is hot-rolled coil through the molding machine, the use of high-frequency current skin effect and proximity effects, so that the ...
Date:2018-04-19 Tags:Black ERW Steel Pipe Factory Situation
Introduction of welded pipe welding of submerged arc welding: 1, bubbles occur in the middle of the weld, the main reason is that hydrogen is still h...
Date:2018-04-19 Tags:Double-sided submerged arc welding direct welded steel pipe welding area
The preweld quality of straight steel pipe includes weld quality and weld quality. (1) when the joint (i.e. the forming joint) has no wrong side or t...
Date:2018-04-19 Tags:Pre-welding Quality of Straight Seam Steel Pipe
Straight seam steel pipe fracture, hydraulic (pneumatic) parts in the design of the use of mechanical properties, brittle fracture is also related to ...
Date:2018-04-19 Tags:Fracture of Straight Seam Steel Pipe in Production
(1) the forming process of high frequency longitudinal welded pipe has little springback and little residual stress....
Date:2018-04-19 Tags:Advantages of High Frequency Straight Seam Welded Pipe
Pipes, pipes, connectors and valves with pipes are connected to the device for transporting gas, liquid or solid particles in the fluid. Typically, th...
Date:2018-04-18 Tags:What is Pipe Line
If you ask who is the best steel pipeline manufacturers in China, there is no doubt that it is United Steel Industry GROUP. As one...
Date:2018-04-18 Tags:steel pipeline manufacturers
After high-frequency straight welded pipe welding, heat treatment is a new technology to eliminate residual stress. Prior to welding, the material is ...
Date:2018-04-18 Tags:Heat Treatment of High Frequency Straight Seam Welded Pipe after Welding
(1) the forming process of HF longitudinal welded pipe is less springback and less residual stress. (2) the effect of deformation hardening is small,...
Date:2018-04-18 Tags:Advantages of High Frequency Straight Seam Welded Pipe
Because long-distance natural gas pipelines have long distances and complicated geographical environments, there are many factors that affect the norm...
Date:2018-04-17 Tags:Cracks after Welding or during Welding
The wrong side of the high frequency longitudinal welded pipe is the most common problem of pre welding. The wrong side of the oversize will directly ...
Date:2018-04-17 Tags:Wrong Side of High Frequency Straight Seam Welded Pipe
The fracture of high frequency longitudinal welded steel pipe, hydraulic (pneumatic) components are used to design mechanical properties, brittle frac...
Date:2018-04-17 Tags:Fracture of high frequency straight welded pipe
Petroleum is the most important energy in the world today. It is widely used. Many devices need to use oil to run normally. For example, we often use ...
Date:2018-04-16 Tags:Why does oil drilling choose thick-walled seamless steel tubes?
