摘要
The fourth plenary meeting of ISO/TC 8/SC 3/ WG 14, Valves for use in ship cryogenic systems, was held in Beijing in January, welcoming 11 del- egates from China and South Korea. The working group now is working on six international standard proposals covering ma- rine cryogenic globe valves, safety valves, gate valves, check valves, butterfly valves and ball valves.
