This standard specifies the type and size of copper alloy flat welded ring loose sleeve plate steel flanges with nominal pressure PN of 2.5 and 4.0 MPa. This standard is applicable to copper alloy flat welding ring loose sleeve plate steel flanges with nominal pressure PN2.5 and 4.0MPa and nominal diameter DN10~500mm.
GB/T 15530.5-1995 history
2008GB/T 15530.5-2008 Loose plate flange in steel with a plate collar in copper alloy for brazing or welding
1995GB/T 15530.5-1995 Loose plate steel flanges with copper alloy plate collar for brazing or welding