The controlled cooling process of A516 Gr 55 pressure vessel steel sheet

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ASTM A516 is also known as ASME SA516. The A516 / SA516 standard specification for pressure vessel plates, carbon steel, for moderate- and lower-temperature service. A grade A516 Gr 55 pressure vessel steel sheet intended primarily for service in welded pressure vessels where improved notch toughness is required, and is normally found in moderate and lower temperature applications. All plates over 1-1/2″ Thick are required to be normalized. A516 Grade 70 steel is the most popular pressure vessel grade of steel plate in the industry.

The preparation of A516 Gr 55 pressure vessel steel sheet galvanized steel before welding is the same as that of ordinary low-carbon steel. It is necessary to carefully handle the groove size and nearby galvanized layer. In order to achieve penetration, the groove size shall be appropriate, generally 60 ~ 65 °, with a certain gap, generally 1.5 ~ 2.5mm; in order to reduce the penetration of zinc into the weld, the galvanized layer in the groove can be removed before welding. In the practical work, the centralized beveling, no blunt edge technology for A516 Gr 55 pressure vessel steel sheet centralized control, two-layer welding process, reducing the possibility of incomplete penetration.

Carbon steel plates are produced with thickness up to 3mm-350mm. We can supply A516 Gr 55 pressure vessel steel sheet, hot rolled plate, sheets, and angles. Carbon steel plates tolerance: Thickness, width and length tolerances for steel plates are in accordance with ASTM A6. Our carbon steel plate tolerances or better are available for temper leveled plates. Flatness capabilities are determined bythe processing line and the minimum yield strength of the material.

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