Large -scale steel, rails, abusive steel plates, large -caliber steel pipes, forgeds, etc. can be stacked in the open sky; small and medium -sized steel, plate strip, steel bars, medium -caliber steel pipes, steel wires and wire ropes, etc., can be stored in well -ventilated sheds, but must be used in Put the pad.

If the anticorrosive spiral tube has single -sided welding and double -sided welding, the welded pipe should ensure the hydraulic pressure test, the tensile strength of the weld, and the cold bending performance. The spiral welded pipe is mainly used for the transportation pipeline of oil and natural gas.