Diameter: width from 300 mm to 1200 mm Origin: local and imported Specifications ST 37 – ST 44 – ST 52 – C 35 – C 45 42CrMo4 34NiCrMo6 17NiCrMo4 16MnCr5 30Mn5 X20Cr13 Spring Steel ( 55Cr5 )
