In terms of production methods, it can also be divided into welded steel pipes for low pressure fluid transportation, welded steel pipes, spiral welded steel pipes, etc. Seamless steel pipe can be used for various liquid and gas pipelines. Welded pipes can be used for water pipelines, gas pipelines, heating pipelines, etc.
Steel pipes can be divided into two categories according to production methods: seamless steel pipes and welded steel pipes.
1. Seamless steel pipe can be divided into hot rolled seamless pipe, cold drawn pipe, fine steel pipe, hot expanded pipe, cold spinning pipe and kneading pipe according to the production method. Seamless steel pipe is made of high-quality carbon steel or alloy steel, which can be divided into hot rolling and cold rolling (drawing).
2. Welded steel pipe is divided into furnace welded pipe, electric welding (resistance welding) pipe and active arc welded pipe due to its different welding process. Due to its different welding methods, it is divided into straight welded pipe and spiral welded pipe. Because of its end shape, it is divided into round welded pipe and special-shaped (square, flat, etc.) welded pipe. Welded steel pipes are made of rolled steel plates welded with butt or spiral seams,
According to the classification of raw materials, steel pipes can be divided into carbon pipes, alloy pipes, stainless steel pipes, etc. Carbon pipes can also be divided into general carbon steel pipes and high-quality carbon structural pipes. Alloy pipes can also be divided into low alloy pipes, alloy structural pipes, high alloy pipes and high strength pipes. Bearing pipe, heat-resistant and acid-resistant stainless steel pipe, fine alloy (such as kovar alloy) pipe and high-temperature alloy pipe, etc.
According to the connection method, the steel pipe can be divided into two types according to the connection method of the pipe end: threading pipe and smooth pipe. Threading pipe is divided into general threading pipe and thickened threading pipe at pipe end. Thickened threading pipe can also be divided into external thickening (with external thread), internal thickening (with internal thread) and external thickening (with internal thread). Threading pipe can also be divided into general cylindrical or conical thread and special thread according to thread type.
Post time: Mar-13-2023