... roll, air shaft. film blowing machine, PE plastic film extruder, PE film making machineUSAGEIt is the plastic film blowing machine for blowing PE(HDPE, LDPE, LLDPE), film; etc.Which kinds of ... and barrel: 38CrMoAl after nitrogen treatment, Supplied from Zhoushan city.3. Gear box: HARD teeth gear surface, casting alloy piston, high ... *3.8m6.0*2.2*4.2m6.0*2.4*4.3m7.0*2.7*5.8m8.0*3.2*8.2m PE plastic film ...