hexagon bolt with large head
hexagon bolt with large head
六角头大螺栓
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Steel Series: steel with high strength large hexagon head bolts, torsion shear bolt connections made, the steel truss joints of high strength bolts, studs, drill the end of wire.
钢结构系列：钢结构用高强度大六角头螺栓，扭剪型螺栓连接副，钢网架球节点用高强度螺栓，焊钉，钻尾丝等。
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