Classification of stainless steel seamless steel pipes

1. According to the production method, stainless steel seamless steel pipe is divided into seamless pipe and welded pipe. Among them, seamless pipes include hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, extruded pipes, and top pipes. Welded pipes are divided into arc welded pipes, resistance welded pipes, gas welded pipes, and furnace welded pipes according to the process. According to the welds, they are divided into straight seam welded pipes and spiral welded pipes.

2. According to the section shape, stainless steel seamless steel pipe is divided into simple section steel pipe and complex section steel pipe. The simple section steel pipes include round steel pipes, square steel pipes, oval steel pipes, triangular steel pipes, hexagonal steel pipes, rhombus steel pipes, octagonal steel pipes, semi-circular steel pipes, etc. Complicated section steel pipes include unequal-sided hexagonal steel pipes, five-petal plum-shaped steel pipes, double convex steel pipes, double concave steel pipes, melon seeds steel pipes, conical steel pipes, corrugated steel pipes, case steel pipes, etc.

3. According to the wall thickness, stainless steel seamless steel pipe is divided into thin-walled steel pipe and thick-walled steel pipe.

4. According to the purpose, stainless steel seamless steel pipe is divided into steel pipes for pipelines, steel pipes for thermal equipment, steel pipes for machinery industry, steel pipes for petroleum geological drilling, steel pipes for container, steel pipes for chemical industry, steel pipes for special purposes, and other seamless steel pipes.