EN1090-1:2009 Execution of steel structures and aluminium structures Part 1: Requirements for conformity assessment of structural components.
EN1090-1:2009 钢结构及铝结构的施工,结构零件一致性评估的要求。
EN1090铝结构CE认证主要测试项目
...EN1090-1:2009 Execution of steel structures and aluminium structures Part 1: Requirements for conformity assessment of structural components.
EN1090-1:2009 钢结构及铝结构的施工,结构零件一致性评估的要求。
EN1090铝结构CE认证主要测试项目
...