There are different views on the selection of saw blade and saw blade steel pipe

　　SSAW pipeline is allowed to use in Italy.

　　In Canada, LSAW pipe and SSAW pipe is regarded as equally important, but in practice, SSAW pipe accounted for about 70% in the main line.

　　SSAW pipe was rarely used in the former United States, Japan and Germany. With the establishment of more and more oil and gas transport lines, seamless limitations and limits of the size of the welded tubes are slowly emerging. These countries are also increasingly using LSAW pipe and SSAW pipe.

　　Russia fully affirmed the advantages of SSAW pipe, so the main line is generally preferred SSAW pipe.

　　According to the forming process, the SSAW pipe has a lot of residual tensile stress (Maximum up to 200 ~ 300 Pa). While in the process of UOE forming process, there is an enlarged diameter. The surface of that compressive residual stress is - 200 ~- 300M Pa.

　　In the process of mechanical expansion, UOE tube has higher dimensional accuracy than SSAW pipe.

　　The weld length of SSAW pipe is longer than that of UOE pipe, so the probability of welding defects is higher.

　　UOE separately forming and welding, has a good welding position and welding parameters are easy to control, which ensure the quality of welding.

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