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Description: The nut production line is composed of automatic multi-station cold upsetting machine and thread rolling machine, the maximum output is 70,000 Pcs/day.nGenerally, the rail nuts and washers are used together with track bolts to form combined components to guarantee the fastening effect. Track nuts with railway spring washers and flat washers are widely used in conjunction with rail bolts.nnThe track nuts and flat washers or spring washers are necessary fastening products for railway joint bars, i
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