Description:
screw:
•  Normal nitriding screw (SACM645)
•  Top gear spray-welding bimetallic screw
•  Wlfram steel screw
•  Hard scries screw:NPT1,NPT2,NOT3
•  Ceramic and diamond on surface screw

Barrel
•  Normal nitriding barrel (SACM645)
•  Centrifugal casting bimetallic barrel( ABC three points )
•  Hard series barrel （ NPT1 ， NPT2NPT3 ）

Specifications：
HV≥290 surface hardness
HV850-1000 nitriding hardness
0.45-0.7mm nitriding depth
≤first level nitriding brittleness
0.015mm screw strightness
≥900HV chrome hardness
0.05-0.1mm chrome thickness
60-70 bimetallic hardness
0.8-2.0mm bimetallic depth

Material and the technical：

Using hight-quality 38CRMOALA to adjust quality, determine the mature and nitrogenize, and spraying the hard mental
Various specifications of the single screws
Normal pattern,screen pattern, diffluent pattern screen pattern, diffluent pattern,shadow pattern breakthrough pattern, mixed refining pattern, flexuous pattern, dawel pattern, accelerated pattern, exhaust patternand detached pattern.

Description:
The differences can be processed to the parallel twin-screw PVC pipe, profile, plate (sheet), modified, and soft and hard PVC granulation

Specifications：
Material selection 38CrMOALA
HV:≥290 Surface hardness
HV950～1000 nitriding hardness
0.45～0.7mm nitriding depth
≤一级 nitriding brittleness
Ra0.4 surface roughness
0.015mm screw strightness
≥900HV chrome thickness
0.05～0.10mm chrome thickness
60-70 bimetallic hardness
0.8-2.0mm bimetallic depth