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  • Common defects and prevention of welded pipe

    Common defects and prevention of welded pipe

    Defects produced in the actual production of high-frequency welded pipes(astm a53 grade b erw pipe) are sometimes not caused by one cause, but are usually the result of a combination of multiple factors. Welding defects may also be caused by other reasons outside the welding area, so many factors...
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  • Harm of excessive weld seam height of welded pipe

    With the rapid development of high-quality strip continuous rolling production and the advancement of welding and inspection technology, the quality of welds continues to improve, and there are more and more types of welded pipes, which have replaced seamless steel pipes in more and more fields. ...
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  • Factors affecting welding thermal cycle

    Welding thermal cycle refers to the process that the temperature of a certain point on the edge of the tube changes over time under the action of the heat source generated by the high-frequency welding current. The welding thermal cycle reflects the thermal effect of the welding heat source on th...
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  • Tianjin Ruitong iron and Steel Co., Ltd. is located in China pipeline equipment base, Daqiu Zhuang

    Tianjin Ruitong iron and Steel Co., Ltd. is located in China pipeline equipment base, Daqiu Zhuang, founded in 2003, covers an area of 35000 square meters, construction area of 10000 square meters, registered capital of 20 million, with 16 advanced production lines, and furnished to a high stand...
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  • Products now covering 28 provinces, municipalities and autonomous regions, and exported to many countries and regions.

    Tianjin Ruitong iron and Steel Co., Ltd. is specializing in the production of cold-rolled strip steel, welded pipe, galvanized pipe, square pipe, spiral pipe scale iron and steel manufacturers. Products now covering 28 provinces, municipalities and autonomous regions, and exported to many countr...
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