This standard specifies the type and size, requirements, marking, inspection, marking, packaging, storage and transportation of non-metallic polytetrafluoroethylene coated gaskets (hereinafter referred to as) for pipe flanges. This standard is applicable to non-metallic polytetrafluoroethylene-coated gaskets for raised face flanges with nominal size DN10~DN600, nominal pressure PN6~PN63, nominal size NPS1/2~NPS24, and nominal pressure Class150 and Class300.
GB/T 13404-2008 Referenced Document
GB/T 12385-2008 Test method for sealing performance of gaskets for pipe flanges
GB/T 12621-2008 Standard test method for stress relaxation of gaskets for pipe flanges
GB/T 12622-2008 Standard test method for compressibility and recovery of gaskets for pipe flanges
GB/T 191 Packaging.Pictorial marking for handling of goods