This standard specifies the types and dimensions of flat welded ring plate loose steel pipe flanges with nominal pressures pN of 0.25, 0.6, 1.0, 1.6, and 2.5MPa. This standard is applicable to flat welded ring plate type loose sleeve steel pipe flanges with nominal pressure pN0.25~2.5MPa.
JB/T 83-1994 history
2015JB/T 83-2015 Loose plate steel pipe flanges with weld-on collar
1994JB/T 83-1994 Loose plate steel pipe flanges with weld-on collar