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What are the technical requirements for plate flanges?

2017-12-27 15:40:54   COMMENT:0 HITS:
  The plate flanges are usually made of forgings or forging and rolling. When made of steel or steel, the following requirements must be met:

  1. The DIN2631 Pn25 6 Inch Forged Plate Flange should be ultrasonic flaw detection, without delamination defect.

  2, the strip should be cut along the rolling direction of the steel, and the circular ring is welded through the bending, and the surface of the steel is formed to form the cylinder of the ring. The steel plate can not be processed into a plate flange with a neck.

  3. The plate of the ring should be fully penetrated.

  4, the plate of the ring should be heat treated after welding, and it can be detected by 100% or I. The radiographic inspection is in line with the II level requirement of JB4730, and the ultrasonic flaw detection is in line with the requirement of JB4730 level.

  The lateral inclination of plate flange should not be more than 7O. The plate flange strictly controls the technical parameters in production and welding, so as to ensure the full play and value in production and use.

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