... layer PP,PE,PVC,PET,ABS,PPR for Plastic Extruder Machine Conical Twin Screw and Barrel Zhejiang Bohai Conical twin screw ... .Materials38CrMoAlA (JIS SACM645)SKD61 .etcApplication PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE,EVA,PP,PVC,PMMA,POM,PAST,PET,PBTNitride ... 6)Gh113 nickel based alloy Nitride Hardness950-1050HVPackingWrapped up by film in woodenNitride Brittleness≤Grade OnePayment TermT/T , L/C ,Western ...