The spiral steel pipe is sent to the welded pipe unit with steel, rolling through multiple rolling rolls, and gradually rolling up with steel, forming a circular tube blank with a gap, adjusting the pressure of the rubbing roller, so that the weld gap is controlled by 1 ~ 3mm, and the two ends of the welding port are flat. If the gap is too large, the nearby effect is reduced, the hearing heat is lacking, and the weld crystals are not integrated or cracking.
If the gap is too small, the nearby effect is increased, and the welding heat is too large, which constitutes the weld burning; or the welds are kneaded and rolled to form a deep pit, which affects the surface quality of the weld. Small and medium -sized steel, plates, steel bars, mid -diameter steel pipes, steel wires and wire ropes, etc., can be stored in the outstanding ventilation sheds, but must be padded.
Some small steel, thin steel plates, steel belts, silicon steel sheets, small diameter or thin -walled steel pipes, various cold -rolled steel, cold -pull steel, and high -priced and corrosive metal products can be stored in the warehouse. The venue or warehouse of the spiral steel pipe products should be selected in a clean, clean and smooth place, far from the factory and mines that occur from harmful gases or dust. Weed weeds and all debris on the venue and keep steel clean.
Large -scale steel, rails, dislike steel plates, large -caliber steel pipes, forgeds, etc. can accumulate in the open air. In the warehouse, it must not be piled up with erosive materials such as acid, alkali, salt, and cement. Different varieties of steel should be accumulated away to avoid confusion and avoid contact with corrosion. The warehouse should be selected based on the conditions of the public. Generally, the general closed warehouse is selected, that is, there are warehouses with a wall with a wall, a doors and windows, and a ventilated equipment.
