High-strength bolts for buildings and bridges 1.Materials: low carbon alloy steel 20MnTiB 2.Property Class:8.8 ... the long-term business cooperation relationship with some famous G. E. T manufacturers & distributors in Europe & ... A307Surface: SELF COLOUR, BLACK,ZP,YZP,H.D.G, DACROMENTMaterials:high quality carbon steel (C1015,C1035,C1045etc ... /8"2"91"2-1/4"81-1/8"2-1/2"713/16 "1-7/8"1015/16"2-7/8 ...