... Hot dip galvanized6.packing: export carton and wooden pallet or wooden boxbolts and nuts 1.material:40Cr, 35CrMo 2. ... steel tower masts and other friction-link project. I bolt steel companies choosing the material quality, production, advanced technology, ... M30Length40mm-200mmTensile strengthMax:1240Mpa, Min:1040Mpa.Yield strengthMin:940MpaGrade8.8 or 10.9StandardDIN, ANSI, ASME, ASTM, IFI, JIS, ...