Stainless steel pipes are just one of them. Stainless steel welded pipe is divided into two categories: stainless steel seamless steel pipe and stainless steel welded steel pipe (stitched steel pipe). According to the outer diameter shape of steel pipe, it can be divided into round pipe and special-shaped pipe. Round steel pipes are widely used, but there are some square rectangle semicircle hexagonal equilateral triangle octagonal and other special-shaped steel pipes.

The stainless steel tube is a hollow long cylindrical steel. Its scope of application is used as a pipeline to transport fluids. It is mainly used in petroleum chemistry medical food light industry industrial pipelines and other industrial transportation pipelines and mechanical structural parts. The stainless steel pipe is made of steel plates with acid and heat resistance, and is heated by perforation, the size is hot rolled

For steel pipes subjected to fluid pressure, hydrostatic tests and radiographic inspections are carried out to check the pressure resistance and quality. No leakage will occur at the specified pressure. Wetting or swelling is qualified. According to standards or requirements, some steel pipes are also required. Crimp test Fresh test Flat test, etc.

Seamless stainless steel pipe, also known as stainless steel seamless pipe, is made by perforating steel ingot or solid tube blank, and then hot rolled cold rolled or cold rolled. The specification of seamless steel pipe is expressed by outer diameter * wall thickness (mm).

The characteristics of stainless steel pipes can be seen from the following aspects. First, chemically analyze the chemical composition of stainless steel materials to see if the chemical composition meets the standard requirements. Secondly, it is also possible to test the pressure of the pressure-resistant tube through the pressure test The specified pressure value cannot be maintained for not less than 5 seconds, and no leakage is observed. The traditional supply hydraulic test is 2.45MPa. The air pressure test is P = 0.5MPAa. Corrosion tests are also required. Corrosion-resistant steel pipes supplied by industrial corrosion-resistant steel pipes are inspected in accordance with the standards or corrosion methods agreed by both parties. Stainless steel pipes are not prone to intergranular corrosion.