The copper steel flange should use some technical parameters and requirements for production in the production, ensuring a certain way and in accordance with principles of the use and promotion, and ensuring that the use of strict good quality.
First, the technical requirements of copper steel flange should be consistent with the appropriate requirements of JB4726-4728.
1. carbon steel and stainless steel forgings with 0.25MP-1.0MPa, PN allow the use of grade I forgings.
2. Besides the following provisions, forgings with 1.6MPa-6.3MPa, PN shall comply with Class II or above Class IIrequirements.
3. One of the following cases, the copper steel flange shall comply with the requirements of Class III of forgings:
(3) Nominal pressure PN> 1.6MPa Operating temperature ≤ -20 degrees Celsius and ferritic steel forgings.
Second, the copper steel flange generally is made of forgings or forged rolling process. When using steel or steel manufacture, must meet the following requirements:
1. The copper steel flange shall be subject to ultrasonic testing, and have no defect layer;
2. Shall not be used directly machined into a steel plate copper steel flange with a neck;
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