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Welded pipe can be pided into ERW, SSAW, LSAW, EFW: ERW: Electric resistance welding pipe   EFW: Electric fusion welding pipe   SSAW: Spiral submerged arc welding pipe  LSAW: Longitudinal submerged ar...

Oil Casing Pipe Specification Sheet Outer Diameter Theoretical Weight Wall Thickness  Inner Diameter ...

Square rectangular tubes are popularized and applied with high-pressure air-cooling quenching technology. Foreign heat treatment manufacturers pay more attention to the cooling during heat treatment o...

After the production of the casing pipe and the pipeline, the surface is generally sprayed with anti-rust paint, and the outer surface of the pipe is sprayed with a prominent logo according to the API...

ERW steel pipe is the abbreviation of electric resistance welding. The welding method of ERW pipe and submerged arc welded pipe is significantly different. The pressure welding method without filler m...

J55 casing pipe is a kind of tubing used as the material of petroleum well wall for a long time. It is connected to thousands of kilometers of pipe string through special thread. In the downhole cemen...

Both straight seam resistance welded steel pipes (ERW) and spiral submerged arc welded steel pipes (SSAW) can better meet the requirements of oil and gas pipelines. For medium-diameter (Ф630mm) steel ...

The purpose of thermal deformation of oil casing pipe is not only to obtain the required size, but also to improve the properties of steel. Thermo-mechanical treatment is a general term for a process ...

ERW (high frequency straight seam welded pipe) steel pipe blanks are manufactured by hot-rolled steel strip cold rolling forming, while SML (seamless steel tube) steel pipe blanks are formed by perfor...

With the rapid development of the petroleum industry, the severe corrosion of buried pipelines, oil well casings and storage tank bottom plates, especially oil well casings, in oilfields has severely ...