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The spiral welded pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the twe...

After the processing of the carbon steel pipe is complete, there will be some twists and turns, and the reduction of these twists and turns has to rely on the straightening machine to complete. Theref...

The potential difference between the weld seam of HFW welded pipe and the heat affected zone and the base metal is the main cause of groove corrosion; through effective heat treatment, the microstruct...

27MnCrV steel AC1 = 736 °C, AC3 = 810 °C, sub-temperature quenching heating temperature between 740-810 °C selected. Sub-temperature quenching selection of heating temperature 780 °C, quenching and he...

Performance characteristics of casing pipe: The product has the common advantages of ERW pipe and seamless pipe; High product dimensional accuracy, uniform organization, good toughness, etc. The prod...

J55 and N80 casing pipe: 1. The yield strength of N80-1/Q is 173 ~ 206 MPa higher than that of J55. 2. The elongation of N80-1/Q is higher than that of J55 on the same sample area. 3. Wit...