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A级B级C级螺纹什么意思
更新时间: 2020-07-09 00:00:00  

A级与B级为精制螺栓,C级为粗制螺栓。A、B级精制螺栓表面光滑,尺寸准确,对成孔质量要求高,制作和安装复杂,价格较高,很少在钢结构中采用。

A、B级精制螺栓的区别仅是螺栓杆长度不同。

C级螺栓一般可用于沿螺栓杆轴受拉的连接中,以及次要结构的抗剪连接或安装时的临时固定。

关键词: 螺纹 什么 意思

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