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Integral heavy weight drill pipe is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD.

ASTM A671 GR.CC60 steel pipe is a kind of pipe used for high-pressure purposes. It is mainly manufactured by electrofusion welding process and belongs to a grade in the ASTM A671 standard.

Stainless steel polished pipe is a kind of pipe commonly used in industry and construction fields. It has the characteristics of corrosion resistance, beautiful appearance and easy cleaning.