... plastic extruder single screw barrel/extruder single screw barrel for pp bag making We ,Lucheng screw Machinery Factory, is one of ... Technology: nitriding treatment, alloy coating spraying, heat-treatmentu Appliance: PVC, PP, PE, PA, PC, ABS, AS etcu Depth of Nitrated Layer ... .etcApplication PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE,EVA,PP,PVC,PMMA,POM,PAST,PET,PBTNitride Depth0.5mm-0.8mmTechnology1 ...