... .Aluminum cylinder block 3.ISO9001:2008 Cylinder block design for 168F aluminum cylinder head.We are a ... 2343,SKD61,45#steel,etc.Heat treatmentHardened,NitridingHardnessHRC50~55Mould featureAdvanced design, Novel structure, High precision, Quality materials, Long lifetime ... engraving machine, CNC forming machine, CNC turning, EDM, Linear cutting machine, Die spotting machine(200T), Die casting machine ...