... Series gear box for extruder machine 1.Highly Standard Modular Designed 2.High Strength,Compact Dimension PV series general helical gear box We ,Lucheng ... of per certain volume.5.Long Service LifeUnder the condition of accurately selecting type size and the normal maintenance and use, main ... of Screw Barrel :Welcome to contact us!Ths Series gear box for extruder machine(PVC, PP, PE, PA, PC, ABS .etc)