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High Strength Seamless Steel Pipe
Oct 30, 2017
The pipe ends can be divided into two types: Light tube (pipe end without thread) and car wire pipe (with thread in pipe end). Car wire tube is divided into: common car wire and pipe end thickening car wire. Thickened car wire tube can be divided into: external thickening (with external thread), internal thickening (with internal thread) and internal and external thickening (with internal and external thread), such as car wire pipe. If the screw thread type can also be divided into: ordinary cylindrical or conical thread and special thread, such as car wire pipe.