Specifications 1.25mm mini twin parallel screw cylinder for lab. 2.38CrMoAlA;42CrMo,SKD61 3,Wc/co,Ni,Mo alloy,wearproof 4.Granule/foaming 25mm mini twin parallel screw cylinder for lab. For good plasticizing effect, we have different design of screw barrel to meet customer's demand: gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type, double-head type, multi head type etc. It is suit for...