塞规螺纹1.56H
塞规左旋螺纹1.5
螺纹M751.5M72
左旋螺纹左牙5.5
螺纹685165
螺纹塞规量规m65m68m70m72m75
成量量规螺纹6H6g
螺纹新品1.5M70
丝锥厂家MH721.5
螺纹规规5.5465
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