cylinder screw，Guide rod，accessory of plastic injection machine，material ：38CrMoALA；SACM645；SKD61；H13；DC53；YPT41;YPT42

Process diameter：16mm to 300mm

Treatment：quench in vacuum，nitridation，hardness chrome plated，nanotechnology

Application： HF screw，fiber screw，optics level screw，PC transparence material screw

A class hardness alloy cylinder： tungsten carbide：40%，it is ideal for inject HF material or fiber component more than 40%

B class hardness alloy cylinder：tungsten carbide：25%，it is ideal for inject fiber component around 30%

C class PTA tooth welding cylinder：tungsten carbide：40%，it is ideal for inject fiber component more than 15%

General nitridation cylinder screw is suitable for inject ABS,PC,PP,PE,PA　and so on material