厂家直销30螺栓： 16x30.18x50.20x40.16x40 18x60.20x50.16x45.18x65 .20x55.16x50.18x70.20x60. 16x55.18x75.20x65.16x60. 18x80.20x70.16x65.18x90 .20x75.16x70.18x100.20x80. 16x80.20x90.16x90.20x100. 16x100 16x110.16x120. 袋装箱装现货，价格美丽，可订打4.8、8.8级或来料加工。