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Steel pipe production method Classification
Pipe according to production methods can be divided into two categories: seamless steel pipe and pipe joints, pipe joints referred to as straight pipe joints.
1. Press seamless steel pipe production methods can be divided into: hot-rolled seamless pipe, cold drawn tubes, precision steel tubes, thermal expansion pipe, cold spinning tube and squeeze tubes.
Seamless steel pipe with high-quality carbon steel or alloy steel, hot-rolled, cold-rolled (pull) of the points.
2 welded steel pipe welding process is divided into different because of the furnace pipe, welded (ERW) pipes and automatic arc welded pipe, welded its different forms is divided into two kinds of Longitudinal and spiral welded pipe, its end shape divided circular welded pipe and shaped (square, flat, etc.) pipe.
Welded steel pipe is rolled into a tube-shaped steel sheet to the seam or spiral seam welded, in the manufacturing method, is divided into low pressure liquid delivery welded steel pipe, spiral seam welded steel pipe, straight welded steel pipe, welded pipe. Seamless steel pipe can be used in various industries liquid pressure pipelines and gas pipelines. Welded pipes can be used for water pipes, gas pipes, heating pipes, electrical pipes.
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