中华人民共和国国家标准 (Guobiao — Mandatory National Standards)ChinaAuthority: 82
GB 7540
Rubber Seals — Joint Rings for Water Supply and Drainage
Industry
Rubber
Product Family
Rubber Seal
Keywords
["橡胶", "弹性体", "硫化", "混炼", "挤出", "压延", "模压"]
Rubber Seals — Joint Rings for Water Supply and Drainage
Rubber
Rubber Seal
["橡胶", "弹性体", "硫化", "混炼", "挤出", "压延", "模压"]