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Spiral steel pipe

In the water pipeline often choose to use spiral steel pipe, to know the spiral steel pipe are basically using molten iron casting, in the sewer network used more, but the spiral steel pipe with a seamless steel pipe is still very different, then the spiral pipe The use of the process, and how to check the quality of spiral steel pipe, first of all the spiral pipe mold management, molds need good maintenance and maintenance, can not bring obvious defects, or will greatly affect the surface quality of the pipe, followed by Production capacity, there must be a large enough to store the storage of spiral steel pipe, the use of materials to ensure that clean and stable, some manufacturers too much recycling raw materials to reduce costs, to know the spiral pipe processing materials, once there is a lack of, will inevitably lead to Spiral steel pipe construction quality greatly reduced, so the inspection of the spiral steel pipe, the need to control the quality of pipe fittings, water pressure test is basically every pipe needs to be carried out, regardless of its size, should be carried out hydraulic pressure test Or the same effect test, spiral steel pipe inside and outside the coating also need to meet the requirements of the standard.
 

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