The pipe pile foundation is the most used form of foundation in deep foundation, its role is to transfer the load of the upper building to the soil layer with strong bearing capacity in depth, or to squeeze the weak soil layer to improve the bearing capacity and compactness of the foundation soil.

Some hole design and adjustment methods will directly affect the quality of seamless steel pipe forming and sizing, so what should be paid attention to when dealing with seamless steel pipe forming?

The main material of this seamless steel pipe is 40cr, and 40cr is the standard steel grade of my country's national standard GB. This material is also one of the most widely used steel materials in my country's machinery manufacturing industry.

Stainless steel welded pipe is a relatively common material in production, and it is also of great help to life. Nitrogen is often used in stainless steel welded pipe welding.

The cold working of black steel seamless pipe includes cold rolling, cold drawing, cold tension reducing and spinning, etc. It is the main method for producing precision thin-walled and high-strength steel pipes.

Welded pipe refers to a steel pipe or steel plate that is bent and deformed into a round, square or other shape and then welded into a seam on the surface. The blanks for welded pipes are steel sheets or strips. How to weld steel strips or steel plates together, and what are the welding skills? ‎