Production Technology of Rectangular Tube
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...
Packaging Method of Oil Casing
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...
Differences Between ERW and EFW Steel Pipe
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...
Production Process of Hot-rolled Steel Strip for Petroleum Casing
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...
Comparison of Characteristics Between ERW Steel Pipe and Spiral Submerged Arc Welded Steel Pipe
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 ...
Steel Pipe of Petroleum Casing is the Main Way to Achieve Steel Cooling
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 ...
