... -M30 length: <80mm Grade:4.8,6.8,8.8,10.9,12.9Surface:black zinc,parkerising,chrom plated and oxide coatingCertificate ... .Carbon steel: C1006,C1010,C1018,C1022,C1035K,C10458.Alloy steel: SCM435,10B21Surface FinishZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and ... .8*2.13*2.18m Grossweight:22tons 54CBM Lead TimeWithin 10-15 working days as usualPackagePoly bag + bulk packing in strengthen ...