2023-11-20 The spiral seam submerged arc welded steel pipe has a uniform wall thickness, looks good, is evenly stressed, and is durable. The spiral seam submerged arc welded steel pipe has uneven wall thickness and uneven stress on the steel pipe. The thin parts of the steel pipe will easily break. The uneven
Read More 2023-11-17 1. Under the condition of not affecting the welding of the nozzle, the reserved length of the epoxy powder at the end of the polyethylene layer should be appropriately increased to prevent the 3PE anti-corrosion warping caused by the long stacking time of the steel pipe and the serious metal corrosi
Read More 2023-11-16 1. Long-term over-temperature burst tubeOver-temperature refers to metal materials operating at temperatures exceeding the rated temperature. The rated temperature refers to the allowable maximum temperature of the steel during the design life, and can also refer to the rated temperature during oper
Read More 2023-11-15 The steel plate is first pressed into a U shape in the forming die, and then pressed into an O shape, and then the inner and outer submerged arc welding is performed. After welding, the diameter is generally expanded at the end of the full length, which is called the UOE welded pipe, and the one tha
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