Specifications 1.100 mm screws single screw barrels for 2.5mm plastic sheet extruder 2.Material:38CrMoAIA,SKD61 3.Wear-abrasion 4.New design 100 mm screws single screw barrels for 2.5mm plastic sheet extruder RAQ: Q1: What's screw barrel? R: Screw barrel is the major and most important part for plastic injection and extruder machines. It provides the plasticization of plastic. Q2: Who is OSD? ...