... 4Certificate:SGS Rail Timber Drive Screw Spike/5/8"*12" galvanized steel spiking >> Specification : DIN,GB ANSI/ASME ASTM, UIC864-1,JIS ... ,6.8,8.8,10.9,12.9 ( General and High strength) >> Surface treatment: plain, black, zinc, electro galvanize, hot dipgalvanization ... .China. 2.From 2006, we have manufactured the products of high speed railway and now they are being used. We exported ...