標準號：IS 7719-1975
發布日期：1975/9/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：Specifies the dimensions, tolerances, material and general requirements for metallic spiral wound gaskets for use in flange joints having flat or raised faces.1.1 The gaskets specified are for use with flanges of the following classes in nominal pipe sizes 10 mm to 600 mm and broadly classified under six different pressure ratings:a) For pressures up to and including 1 MPa* — Class 10b) For pressures above 1 MPa to 2 MPa —Class 20c) For pressures above 2 MPa to 4 MPa — Class 40d) For pressures above 4 MPa to 6 MPa —Class 60e) For pressures above 6 MPa to 10 MPa —Class 100f) For pressures above 10 MPa to 17·5 MPa —Class 1751.2 Appendix A contains alternate gasket and centering ring sizes to suit pipes and flanges to DIN specifications for information only.