Single Extruder Screw Barrel

We are offering single extruder screw barrel.
we are a professional manufacturer of screw and barrel for 17years,we can supply and design all kinds of screw&barrel according to your requirments
base material
1.38 crmoaia(jis sacm645)
2.42crmo(aisi4140)
3.9cr18mov
4.cw6mo5cr4v2
5.skd61
bimetallic alloy maerials:
1.fe-based alloy
2,ni-based alloy
3,co-based alloy
4.nico-based alloy
5.tungsten carbide
heat-treatment
nitriding treatment
electroplate hard-chrome
high-frequency quenching
spraying corrosion wear-resisting dual metal layers
depth of nitrated layer 0.5-0.8mm
hardness of nitration 900-1020hv
fragility of nitration less than grade 1
surface roughness ra 0.4um
hardness of cr-coating layer ≥950hv
thickness of cr-coated layer 0.03-0.08m
appliance pvc, pp, pe, pa, pc, abs, as etc
guarantee period a year