1. Basic inspectionThe fundamental inspection is the process of checking the angle level of the steel power angle tower, anchor bolts, nuts, etc. The basic inspection primarily verifies the angle steel tower's fundamental information. Basic inspection data information must be quickly colle
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"ERW steel pipe" refers to a high-frequency straight seam resistance welded pipe, abbreviated as ERW, that is used to transport oil, natural gas, and other vapor-liquid objects and can meet various high and low-pressure requirements. The field is critical.1. Welded pipe refers to standard
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1. Involvement of welding slag: Welding slag is a part of the welding slag remaining in the weld metal.2. Poor penetrationThe metal overlap of the inner and outer welds is not enough, and sometimes there is no penetration. This situation is called insufficient penetration.3. UndercutThe undercut is
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1. Check that the centering roller is properly installed, then adjust the opening angle related to the central core roll and the opening size of each action to be consistent, then hold the rolling pin and roll the center line.2. Replace worn plugs, guide rolls, and other rolling tools as soon as pos
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TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
