资讯

instrument15 天

建筑用穿墙防水对拉螺栓套具

建筑用穿墙防水对拉螺栓套具,JG/T 478-2015下载，Waterproof split bolt for building formwork，JG/T 478-2015全文，JG/T 478-2015阅读 ...
instrument16 天

倒T形预应力叠合模板

倒T形预应力叠合模板,JG/T 461-2014下载，Permanent inverted T-shaped pre-stressed formwork for concrete composite slab，JG/T 461-2014全文，JG/T 461-2014阅读 ...