... S780/SS2.5, S660/SS2.0 , S550/SS1.7 , S460/SS1.4 , S390/SS1.2, S330/SS1.0, S280/SS0.8, S230/SS0.6 ... ,stamping,die-forging,drawing and rolling or after heat treatmentS550/SS1.7S460/SS1.4G16/SG1.4G14/SG1.7sand removal of large and ... structures, shot peening of work piece,cutting of graniteS390/SS1.2S330/SS1.0G18/SG1.2G25/SG1.0sand removal of medium and small ...