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Flange Knowledge Encyclopedia

2017-08-29 11:17:19   COMMENT:0 HITS:
  First, the Blind Flangegenerally used forging or forging process made. When using steel or steel, it must meet the following requirements:

  1, Blind flange should be ultrasonic testing, no stratification defects;

  2, should be cut along the direction of steel rolling into strips, the bending of the ring into a ring, and the surface of the steel to form a ring cylinder. Shall not be directly machined with steel plate with a neck welded flange;

  3, the ring of the Manufacturer Alloy Steel Blind Flange should be used through the weld;

  4, the butt weld of the ring should be post-weld heat treatment, and for 100% ray or ultrasonic testing, and ray detection in line with JB4730 Class II requirements, ultrasonic testing in line with JB4730 I-level requirements.

  Second, the blind flange outside the slope should not be greater than 7o. The blind flange in the production and welding strict control of technical parameters to ensure that the production and use can play a full role and value.

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