The uneven deformation of seamless tube during cold drawing leads to additional stress. After cold drawing, this extra stress remains in the residual ...
Date:2018-05-25 Tags:The formation of residual stress in the cold drawing process of seamless steel pipe
The seamless tube usually loses its bearing capacity at 450-650 degree C and experiences great deformation, resulting in bending of steel columns and ...
Date:2018-05-25 Tags:Fire protection of seamless tube
LSAW welding machine is an automatic welding equipment, which can be automated through welding workpiece automation and mechanized linear welding. Str...
Date:2018-05-25 Tags:LSAW Welding Machine
The main equipment for the pipe production is as follows: Steel milling machine: machined metal plates are machined on both sides, forming the re...
Date:2018-05-25 Tags:The main equipment for the production of LSAW pipes
Advantages of LSAW pipes It can destroy the casting structure of steel ingots, refine the grain of steel, eliminate the defects of structure, make th...
Date:2018-05-24 Tags:Advantages and disadvantages of LSAW pipeline
ERW carbon steel tube has this processing technology, which has the advantages of post welding heat treatment, eliminating residual stress in weld and...
Date:2018-05-24 Tags:How to ensure the quality of ERW carbon steel pipe
P110 casing plays an important role in oil well operation. They can protect shallow and shallow oil wells, and also support oil and gas transportation...
Date:2018-05-24 Tags:Function and repair of P110 casing
(3) For long oil and casing string, it is recommended to use sliding type elevator. Chuck and slip shall be clean, undamaged, and properly fitted. For...
Date:2018-05-24 Tags:Field requirements for casing operation
Casing process in a factory The alternative quenching method provided by this study can not only reduce the internal stress produced in the quenching...
Date:2018-05-24 Tags:Process of casing pipe in plant
Mg-Al spinel in the liquid steel of casing pipe begins to change into the liquid calcium aluminate; the magnesia-alumina spinel is more easily modifie...
Date:2018-05-24 Tags:Microstructure of magnesium aluminum in casing
he stress and deformation of the ERW pipe will produce stress and deformation on the surface of the ERW pipe as long as it is welded in the production...
Date:2018-05-23 Tags:Stress and deformation of ERW tube
Dimensional tolerance of erw steel pipe...
Date:2018-05-23 Tags:Dimensional tolerance of erw steel pipe
The effect of roller adjustment on the quality of ERW has a process called roller adjustment when producing ERW pipes. During the production process, ...
Date:2018-05-23 Tags:Effect of roller adjustment on the quality of ERW steel pipe
1, choose the right process From the comparison of several large longitudinal welded pipe technology and the development analysis of large longitudin...
Date:2018-05-23 Tags:Problems to be solved in the construction of large diameter longitudinal welded pipe mill in China
he straightening method of DSAW pipe: One, the DSAW tube is bent in the same direction Reason: Welding normalization is insufficient, the pipe has t...
Date:2018-05-23 Tags:The straightening method of DSAW tube
