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In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and s355j2 steel material price pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t.
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LSAW Pipe to Peru. In the beginning of 2014, Peru government released an international tender for one of the hydroelectric power plant. Finally they chose us as the contractor, we purchased the steel plate and then fabricate the s355j2 steel material price steel plate into steel pipe, and then make the corrosion protect on the surface, we also supply the fitting with our steel plate, the total value of this order is about 2 million USD.
When cutting and punching a part, the dimensional tolerance shall not be greater than 10% of the s355j2 steel material price thickness of the part. If burr occurs, the limit height shall not be greater than 0.3mm. If the part is drawn from steel sheet, some other changes may be made to ensure the basic size, but if the surface affects the assembly, it should be repaired flat. After the steel plate is installed, it should be cleaned. Before installing the steel bar, it should not pile up heavy objects on it.