high strength nut ; high-strength nut
high strength mining round link chain 矿用高强度圆环链 high strength nut 高强度螺帽 high strength optical fiber 高强度光纤 ..
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标准件、紧固件的热镦，如高强度螺栓、螺帽等。
Standard parts, fasteners of hot upsetting, such as high strength bolts, nuts and so on.
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标准件、螺栓的热镦，如高强度螺栓、螺帽等；
Standard piece , hot bolt rammer, if high-strength bolt , nut etc.
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