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Galvanized seamless steel pipes have very little galvanizing, only 10-50g/m2, and their corrosion resistance is much worse than that of hot-dip galvanized pipes. Regular galvanized pipe manufacturers ...

Based on the analysis of fracture morphology, chemical composition, mechanical properties, microstructure and corrosion product composition, the causes of cracking of casing collar of an oil well were...

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...