The steel pipe pile is composed of a steel pipe, a tongue and groove, and a tongue and groove pin. The left end pipe wall of the steel pipe diameter is vertically connected with a rebate groove, and the cross section of the rebate groove is a square frame shape with one side opening, and a reinforcing rib is provided on the side of the rebate groove.

In the manufacture of seamless steel, there are many reasons to make the steel pipe magnetic, and the main reasons for the residual magnetism of the steel pipe are process magnetism and induced magnetism.

Both steel pipe piles and steel sheet piles are structural members used in construction projects, but they differ in shape, application and installation method.Steel pipe piles and steel sheet piles are both types of structural elements used in construction projects, but they have different shapes, applications, and installation methods

Square tube (such as a500 square tube) is a hollow square cross-section light-weight thin-walled steel tube, also known as steel cold-formed profile. It is a section steel with a square cross-section shape and size made of hot-rolled or cold-rolled strip or coil as the base material, which is cold-bent and then high-frequency welded.

Insulation spiral steel pipe is to insulate spiral steel pipe (SSAW pipe). The most important method of heat preservation is polyurethane heat preservation spiral pipe. After pre-treatment such as rust removal, the steel pipe is covered with a layer of polyethylene or steel.

Spiral steel pipe (SSAW pipe) is a welded pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel into the welded pipe unit, and after rolling by multiple rollers, the strip steel is gradually rolled up to form a circular tube blank with an opening gap.