Conical Twin Screw & Barrel 

Brief introduction： Conical Twin Screw&Barrel Basic parameters： Product category: corotating bon-screw & barrel,  counter-rotating parallel twin-screw & barrel Surface processing technology: nitriding, alloy spraying,  chrome plating, etc. Nitriding hardness HV: 860-980 Straightness: 0.05mm              Surface finish Ra     ：Ra≤0.2 Scope of application： It is suitable for extrusion of PVC pipes, profiles and sheet foam products. It is suitable for extrusion of PE, PP bellows.  Composition and process： Screw Screw is made of high-quality 38CrMoALA or 1.8550 forging material, with quenching and tempering to HV290-320, flight surface made with nickel alloy plasma welding, alloy thickness≥1.7mm, hardness: HRC58, nitriding by NITREX process after finishing machine, nitriding depth: 0.5-0.7mm, h…