Tianjin Yuantai Derun Group has overcome many difficulties brought about by the new crown epidemic and mobilized all resources, including pipe pilesto concentrate on supplying supplies for the Qinghai 10-million-kilowatt national UHV power new energy base project. At present, the supply of all
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1. Stress relief annealingHeat the pipe to 500-650°C, keep it warm for a certain period of time, and then cool it down slowly. Eliminate the internal stress generated during welding and cold straightening of rectangular hollow steel tubing, and eliminate the internal stress generated during cutting
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1. The typical igniting time of square rectangular tube is 60 seconds. If the ignition period is too short, the solid fuel on the surface will not be properly ignited, and drawing down the fuel belt on the surface of the square tube will be problematic, affecting normal sintering.2. The sintering ex
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1. Galvanized angle steel, the pure zinc layer covers the thick steel surface, preventing all aqueous solutions from contacting the steel substrate, and can maintain the corrosion of the steel substrate. Generally, in the atmosphere, the zinc layer is produced on the surface of the thin and high-den
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TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
