1,made of high quality alloy steel 2,used for produce various plastic 3,UV 1,Feature&UseThis DJPA machine is a combination of extruder , calender ,rewinder and electric control console etc…The drum,screw stem,mesh changer and die head are made of high quality alloy steel (38CrMoALA)with optimum hardness,strong corrosion resistance and long operating life after nitrogen treatment .The felt wrapped ...