In order to increase the use space of the building, the designer of the building will centrally install some pipes. In this case, there will be some pipes passing through the floor, roof and various walls.

Some of the problems that are easy to appear for pipes are definitely inseparable from the problem of wear, and welded pipes are no exception. Welded steel pipes will inevitably have some wear problems during the production process.

What is the process and purpose of borax blowing in the production process of seamless steel pipes? The limited mandrel continuous rolling mill has one more process than the floating and semi-floating mills, which is to spray antioxidant with nitrogen into the capillary before the entrance of the tube mill.

The flattening performance test of seamless steel pipe plays an important role in the hardness, melting point, corrosion resistance and pressure of seamless steel pipe.

Seamless steel pipes are divided into two types: hot-rolled and cold-drawn seamless steel pipes. Hot rolled steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.

Folds and internal cracks in medium and low pressure boiler tubes are the most common forms of defects. Internal folds and internal cracks may be distributed along the entire length of the steel pipe, or located only at both ends or part of the length. When rolling alloy steel pipes, inward folding is particularly easy to occur, and rolling general carbon steel pipes sometimes occur.