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双头螺栓螺纹/非标准螺栓
执行标准
A193 DIN976GB899 GB882 HG/T20613 HG / T20634NB / T47027 GB901 SH3404 HG / T2157
材料
35#, 40Cr, 35CrMoA, 25Cr2MoVA, B7, L7不锈钢等轮毂螺栓
表面处理
黒色,磷酸盐,锌,热浸镀锌,达克罗
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