Railway Bolts standard: GB, DIN, JIS, ANSI/ASME, ISO, BS, As well as according to the customer incoming samples or drawing.
Railway Bolts Specification:
Railway Bolts Grade: 4.6, 5.6, 6.8, 8.8, 10.9, 12.9. Or Grade 2, Grade 5, Grade 8.
Railway Bolts Finish: Black, Yellow Zinc, White Zinc, The Hot Dipping Zinc, chrome-faced.