This standard specifies the scope, type, requirements, inspection methods, inspection rules, signs, packaging, storage and transportation of metal ring gaskets for steel pipe flanges. This standard is applicable to metal ring pads for steel pipe flanges with ring connection sealing surface of nominal size DN15 ~ DN900 and nominal pressure PN20 ~ PN420
GB/T 9128 Dimensions of metallic ring-joint gaskets for use with steel pipe flanges
GB/T 9130-2007 history
2007GB/T 9130-2007 Specification of metallic ring-joint gaskets for steel pipe flanges
1988GB/T 9130-1988 Specification for metallic ring gasket for steel pipe flanges joint
GB/T 9130-2007 Specification of metallic ring-joint gaskets for steel pipe flanges was changed to GB/T 9128.1-2023 Metal ring gaskets for steel pipe flanges Part 1: PN series.