BS 5041-3-1975 Fire hydrant systems equipment — Part 3 Specification for Inlet breechings for dry riBS 5041-3-1975 Fire hydrant systems equipment — Part 3 Specification for Inlet breechings for dry riser inlets
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。