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The large-diameter ssaw steel pipe factory needs to test the product after the production is completed, especially its compressive capacity, because we usually use it in the ground when it is used, so...

Sub-temperature quenching, that is, incomplete quenching of thick-walled spiral steel pipe, or quenching in critical zone, heating quenching in two-phase zone, means that the steel piece is heated bet...

The raw material of ssaw steel pipe is a hot rolled plate, which is a strip or a coil. Hot-rolled steel sheets, that is, hot-rolled steel-rolled steel sheets or steel strips, commonly known as hot pl...

1. Welded steel pipe for low-pressure fluid transportation (GB/T3092-1993) is also called general welded pipe, commonly known as black pipe. It is a welded steel pipe used for conveying general lower ...

1. Seamless steel pipe cutting treatment problem After the seamless steel pipe is straightened, the initial inspection of the soot is performed to determine the length of the cutting head and the ta...

Seamless steel tube heat treatment is pided into three categories: (1) Final heat treatment to meet the performance requirements of seamless steel products; (2) heat treatment in the heat treatment st...