1. product

●Ordinary nitriding
●Inner hole centrifugal casting alloy(divideABCThree levels)
●Full hard inner sleeve series

2.Product specifications

● Screw diameter:15mm-300mm
●Aspect ratioL/D：= 15~ 46

3. TECHNICAL INDEX

●Surface hardness:HV≥290
●Nitriding hardness: HV850-1000
●Nitriding depth:0.45-0.7mm
●Nitriding brittleness:≤1 level
●Screw straightness: 0.015mm
●Hardness of surface chrome plating after nitriding:≥900HV
●Chrome plating thickness:0.05-0.1mm
●Dual alloy hardness: HRC60-70
●Alloy depth:0.8-2.0mm

4. scope of application

●apply toPVC,PP PE,PO,PPU,PU,OPP,PC,ABS,PA,PET,PPR,EVA,PPS,PBWaiting for various plastic extrusion moldingEPEPearl cotton foam, various recycled plastic pellets.