DIN 18799-1:2019-06 建筑工程固定梯系統 安全要求和測試 第1部分:帶有兩個立柱的梯子
Fixed ladder systems for construction works - Safety requirements and tests - Part 1: Ladders with two uprights / Note: DIN 18799-1 (2009-05) remains valid alongside this standard until 2019-11-30.