英标钢管脚手架标准(第一部分)BS_1139-1.1-1990? British Standard A single copy of this British Standard is licensed to Giorgio Cavalieri on March 15, 2001 This is an uncontrolled copy. Ensure use of the most current version of this standard by searching British Standards Online at bsonline.techindex.co.uk BRITISH STANDARD BS 1139-1.1: 1990 Metal scaffolding — Part 1: Tubes — Section 1.1 Specification for steel tube Licensed Copy: Giorgio Cavalieri, ALSTOM, 15-Mar-01, Uncontrolled Copy. © BSI BS 1139-1.1:1990 This British Sta查看更多2个回答 . 4人已关注