Oil casing is a steel pipe used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after drilling and completion.

There are many reasons for the longitudinal cracking of thick-walled seamless steel pipes, including material and process reasons.

The difference between straight seam steel pipe and spiral steel pipe.

How to clean the surface of spiral steel pipe

14 ways to identify fake and inferior thick-walled seamless pipes

Yield strength: It is the yield limit when the metal material yields, that is, the stress resisting the slight plastic deformation.