Home / Standards / GB/T 21873-2008 GB/T 21873-2008 Abolished Rubber seals - Joint rings for water supply, drainage and sewerage pipelines - Specification for materials 橡胶密封件 给、排水管及污水管道用接口密封圈 材料规范 Standard Type GBT ICS 91.140.60;83.140.50;91.140.80 CCS G43 Status 废止 Issue Date 2008-05-14 Implementation 2008-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A