BS 5911-2-1982 Precast concrete pipes and fittings for drainage and sewerage part 2 Specification foBS 5911-2-1982 Precast concrete pipes and fittings for drainage and sewerage part 2 Specification for inspection chambers and street gullies
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。