railway tunnel bolt Size:M24-30 Material: Q235,35#,35K,45# etc. Grade: 4.6,4.8,5.6,8.8,10.9 Surface: self color

screw spikeSize:M24-30Material: Q235,35#,35K,45# etc.Grade:  4.6,4.8,5.6,8.8,10.9Surface: self colour,zinc, HDG and so on

1.we supply:Ss5, Ss8, Ss25, Ss36 and other specification screw spikes

2.Grade: Normal and high strength

3.Protection: Plain, Black, Zinc plated, HDG, Zinc fittrated

4.We offer a comprehensive range of high tensile fasteners in order to meet

various industrial requirements. This range of products used in railway and

subway include bolts, nuts, spikes, clips, washers, plates, gauge rod, nylon

dowels, steel pad, shoulders and so on.

5.These fasteners are available in various sixes, models, designs and finishes

that sufficiently meet the clients requirements.

supply screw spike,variable thread screw spike, drive spike, two-end spike, dog spike,sharp-end spike and so on.