A516 Gr 55 pressure vessel steel sheet with the width less than 2000mm

When cutting and punching a part, the dimensional tolerance shall not be greater than 10% of the A516 Gr 55 pressure vessel steel sheet 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.

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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 A516 Gr 55 pressure vessel steel sheet 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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