Annealing of straight seam steel pipe is to heat the steel pipe to a certain temperature and keep it warm at this temperature and then slowly cool it to room temperature. Annealing includes complete annealing, spheroidizing annealing, and stress relief annealing.1. Heating the steel pipe to a predet
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Nowadays, galvanized square and rectangular pipes are so widely used. The main reason is that they can bring out more advantages and characteristics during use, and can meet the use requirements of more industries. With good anti-corrosion properties, the quality is very stable when used, so there i
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Measures to ensure the transportation of spiral welded pipes:(1) The lifting tools should be inspected before loading the pipes. If it is hook lifting, check whether the hook is a special U-shaped hook.(2) Use the rope control during the loading process of spiral welded pipes. Keep the p
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1. Interval timeIf the interval between each production process is too long, it will cause secondary rusting of the q345b square pipe during the entire operation process. Especially when there is a pickling process, the pipes after phosphating treatment are easy to oxidize, rust, and turn green in t
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TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
