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Operation method: The quenched seamless steel pipe is cooled to -60 to -80 degrees or lower in a low temperature medium (such as dry ice, liquid nitrogen), and the temperature is uniform and then the ...

1. Seamless steel pipe annealing operation method: After heating the seamless steel pipe to Ac3+30~50 degrees or Ac1+30~50 degrees or below Ac1, it is generally cooled slowly with the furnace temperat...

Oil casing pipe gas seal detection technology principle and process Principle: The tightness of the oil casing buckle is closely related to the pressure and medium. The pressure and medium molecular s...

In the relevant regulations, there are a series of regulations and requirements for seamless steel pipe marking. The specific requirements for the logo are as follows: 1. The seamless steel pipe ma...

Because the yoke buckle oil casing is shaped like a ladder, it is called a stepped oil casing pipe, which is one of the commonly used buckle shapes for oil casings.  The ladder ladder oil casing is ab...

ERW straight seam welded pipe surface quenching and tempering heat treatment is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local har...

In order to improve the hardness of the seamless steel pipe, it can be improved by the heat treatment process of the quenched seamless steel pipe. After the seamless steel pipe is processed, in order ...

L80 oil casing flat end, round thread without coupling or with coupling, partial trapezoidal thread with coupling or without coupling, direct connection thread, special end processing, seal ring struc...

In the processing of seamless steel pipes, there is often a problem that cannot be ignored, which is the weld seam. In order to ensure the performance of seamless steel pipes, we need to take some mea...

Production process of oil casing pipe Cold drawing: Tube billet - inspection - shearing - heating - hot perforation - heading - capillary tube storage - pickling, phosphating, saponification - cold d...