bimetallic screw barrel

Bimetallic screw and barrel screw diameter:15mm-250mm screw length:300mm-8000mm barrel outer diameter:40mm-400mm L/D:10-46 Bimetal barrel is a kind of barrels which have be casted a layer of 2-3 mm corrosion & abrasion resistant alloy on the inner wall. Bimetallic Alloy Materials 38CrMoAlA 40Cr Stainless steel SKD61 Ferrous alloy Nickel alloy Tungsten alloy