兑水 发表于 2009-9-6 20:14:29

ASTM A 394-2005 传动塔架用镀锌和裸露钢螺栓

A394-00 Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
页: [1]
查看完整版本: ASTM A 394-2005 传动塔架用镀锌和裸露钢螺栓