GB/T 20671.5-2020 Classification system and test methods for nonmetallic gasket materials—Part 5: Standard test method for creep relaxation of gasket materials
2020GB/T 20671.5-2020 Classification system and test methods for nonmetallic gasket materials—Part 5: Standard test method for creep relaxation of gasket materials
2006GB/T 20671.5-2006 Classification system and test methods for nonmetallic gasket materials-Part5:Standard test method for creep relaxation of gasket materials