BS 1580-1-2007 Unified screw threads Part 1 Screw threads with diameters in and larger – RequirementBS 1580-1-2007 Unified screw threads Part 1 Screw threads with diameters in and larger – Requirements
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。