This standard specifies the type, size and technical requirements for metal toothed gaskets for steel pipe flanges. This standard is applicable to metal toothed gaskets for integral cast steel pipe flanges with concave and convex surfaces and butt-welded steel pipe flanges with a nominal pressure pN of 4.0 to 16.0MPa specified in JB/T 79 and JB/T 82.
JB/T 88-1994 history
2014JB/T 88-2014 Serrated metal gaskets for pipe flanges
1994JB/T 88-1994 Metal dentate gaskets for pipeline flanges