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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In industrial production, high-quality materials must be selected to achieve the goal of reliable product quality.Galvanized sheet is a high-quality raw material for special industrial production, which is very suitable for many household products. Therefore, the selection of high-quality mate
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Steel sheet pile typesare divided according to the production process: cold-formed thin-walled type and hot-rolled type;Steel sheet pile types are divided by lock form: Ravana style, Larsen style. At present, domestic and international mainstream hot-rolled steel sheet piles mostly refer to Larsen t
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