ASTM steel pipe,ASTM elbow,ASTM fitting_Hebei Zhongyue Pipe Fittting Co.,Ltd

Welded steel pipe is also called welded pipe, and it is made of steel plate or steel strip after crimp molding. Welded steel pipe production technology is simple with high production efficiency, varieties, wide specifications, less equipmen...

All the insider knows that steel pipe surface treatment is one of the key factors determine the service life of the pipeline corrosion, it is a precondition for whether the anti-corrosion layer and steel tube can be combined. It is verified...

Thick wall seamless steel tube production process Cutting the circular tube embryo to about 1 meter of billet by cutting machine. The thick wall steel pipe is the pipe that the ratio between outer diameter and thickness is less than 20. Thi...

1.The folding is easy to happen with inferior steel tube Folding is formed on the surface of the pipe line, this kind of defect often throughout the entire product longitudinal. The reason for causing of fold is due to the pursuit of high e...

Descaling grade The construction process commonly used for anti-corrosive coatings of the steel tube like vinyl, epoxy phenolic always require the steel tube surface nearly white level (Sa2.5). And the practice evidence has proved that usin...