1)we can produce various types of screw 2)our company is one of the eight famous firm in China 3)we can bid for projects 1)Type:Ss series square spikes remain Ss5,ss8 ,ss36,all kinds available according to customers drawing and samples. 5/83/47/815/161"4"-12 used AREMA ,BS square spike ,Twisted spike ,70 type spike and oher spikes2)Raw material:Q235,35#,45#,40Mn2,20Mnsi3)Grade :4.6,5.5,8.84) ...