This standard specifies the requirements for types, dimensions, tolerances, technical conditions, inspection and testing of spiral wound gaskets for petrochemical steel pipe flanges. This standard applies to the manufacture and acceptance of spiral wound gaskets for nominal pressure PN20 (Class 150) ~ PN420 (Class 2500) pipe flanges specified in SH/T 3406 "Petrochemical Steel Pipe Flanges".
SH/T 3407-2013 Referenced Document
GB/T 12385 Test method for sealing performance of gaskets for pipe flanges
GB/T 12621 Standard test method for stress relaxation of gaskets for pipe flanges
GB/T 12622 Standard test method for compressibility and recovery of gaskets for pipe flanges
GB/T 27793 Beater addition non asbestos gasket materials