... treatment:Phosphated, Nitrided etc. 3.ISO9002,QS9000,TS16949 Piston Ringpiston ring for Komatsu 6D105 engine:1.piston ring material : ... can aslo do as per customer's request)3.piston ring characteristics:1)wear-resistant2)high temperature ... RH10Hyundai piston ringH100, D4BA, 1 TON, H3.5, D4AF 3 TON, D4AF, 6D16, D6AB, 6D22, M96Benz piston ringOM601, ... way we can! Piston ring for Komatsu 6D105 engine