DIN EN 74-1:2005 腳手架和支承架用聯結件、中心螺栓和踏板.第1部分:鋼管用聯結件.要求和試驗規程.德文版本 EN 74-1-2005德文版
Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures; English version of DIN EN 74-1:2005