... : Q235, 35K, 45#, 40Mn2, 20Mnsi, 35CrMo, 40Cr, 42CrMo 5) Surface: plain (oil), black paint, color paint, zinc, hdg ... ; ect5. Spring Washer/Lock washer/one coil /two coil 1) Size: from 3/ ... all kinds available according to customers drawings and samples. 5/83/47/815/161''4''-12' used AREMA, ... 35#, 45#, 40Mn2, 20Mnsi 3) Grade: 4.6, 5.6, 8.89. Dog spike/railroad spike 1) Type: ...