BS 1139-2-1-1991 金属脚手架第2部分:连接件第1节:钢管制操

liuxilin1215 发表于 2013-12-26 07:33:36

BS 1139-2-1-1991 Metal scaffolding. Couplers. Specification for steel couplers, loose spigots and base-plates for use in working scaffolds and falsework
金属脚手架第2部分：连接件第1节：钢管制操作用脚手架和膺架用的钢联接件松插口和底板的规范

admin 发表于 2013-12-26 09:34:46