BS 3600-1997 Specification for dimensions and masses per unit length of welded and seamless steel piBS 3600-1997 Specification for dimensions and masses per unit length of welded and seamless steel pipes and tubes for pressure purposes
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。