Changshu Cowin Railway Materials Co Ltd is one of the largest railway materials groups in China, in possession of 6 railway materials factories, which produce railway bolts, railway screw spikes, railway elastic clips, railway rubber and plastic products, and also railway machines, which are located in Changshu and Wuxi. With more than 500 employees and 5 senior engineers certificated by CRM, 10 junior engineers, we created miracles once and once again to resolve difficult problems of heat treatment and annealing. With strong sense of innovation and quality, our high quality products bring customers all over the world, which also keeps us in advance of the railway technology. Our products are subjected to testing and inspection by BV, ISO, SGS inspection institutes by sampling from packaging. We are also proud of that. Our customers cover The USA, Canada Brazil, Australia, Japan, Korea, Indonesia, Spain, Belgium, Egypt, German and France，our products are used in the main lines in these countries. In the latest years, we are trying our efforts to make more and more clients acknowledged us. We supply: Screw spike: ss5, ss8, ss25, ss36 and other specifications’ screw spikes Railway bolt: T bolt, SH Bolt, Track bolt, Hex bolt Elastic clips: E1609, E1809, E2005, E2007, E2055, SKL1, SKL12, SKL14 Rubber pad: R54 1435mm, R541067MM, R60 1435mm, ZW 687, ZW700 Insulator: Pandrol series #7,#8, #9, #11,#12, #13 Nylon insulators Lock washers: wL20, WL24, Wl22 Flat washer: Uls6, Uls7 Nut: Nylon nut, hex nut, square nut, heavy and normal Shoulders Cast Rail base plate