China 'GB/T 23658-2009
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 23658-2009
Elastomeric seals - Material requirement for seals used in pipes and fittings carrying gaseous fuels and hydricarbon fluid 弹性体密封圈 输送气体燃料和烃类液体的管道和配件用密封圈的材料要求
Issued Date:2009-04-24
Implemented Date:2009-12-01
Issued by:
The Standardization Administration of the People's Republic of China