Standard specification:
Design and Manufacturing Standards: JBIT 3595, GBIT12234, ASME B16.34
Structural length standards: JBIT 3595, GBIT 12221-2005
Interface connection size: JBIT 3595, GBIT 12224
Pressure and temperature rating: JB/T3595, GBT 12224-2005
Test and Inspection Standards: JBIT3595, MSS SP61, GBTT 13927-2008
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