Stainless steel pipe is a kind of hollow long steel, which is widely used as a pipeline for conveying fluids, such as oil, natural gas, water, gas, steam, etc.
Stainless steel pipes are light in weight when they have the same bending and torsional strength and are widely used in the manufacture of mechanical parts and engineering structures. They are also commonly used in the production of various conventional weapons, gun barrels, and shells. For steel pipes that are subject to fluid pressure and require thicker walls, hydraulic tests are required to verify their pressure resistance and that there will be no leakage, wetting, or expansion under the specified pressure.
Stainless steel pipes are divided into seamless and seamed. Seamless
stainless steel pipes are also called stainless steel seamless pipes. They are made of steel ingots or solid tube blanks through perforation to make capillaries, and then hot-rolled, cold-rolled, or cold-drawn. The specifications of seamless steel pipes are expressed in millimeters of outer diameter × wall thickness. The commonly used
stainless steel pipe is 1Cr18Ni9Ti. The following is an example of a 1Cr18Ni9Ti
stainless steel pipe with a diameter of Ф159mm × 12mm to introduce its horizontal fixed welding method.
