BS 6282-1-1982 —evices with moving parts for the prevention of contamination of water by backflow— PBS 6282-1-1982 —evices with moving parts for the prevention of contamination of water by backflow— Part 1 Specification for check valves of nominal size up to and including —N 54
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。