BS EN 14419-2009 District heating pipes. Preinsulated bonded pipe systems for directly buried hot waBS EN 14419-2009 District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Surveillance systems
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。