For processing all kinds of different plastics, we offer you 11 types of screws.
Type 1. General purpose screw, for processing ABS, PS, HDPE, LDPE, POM, AS, PP etc.
Type 2. PC screw, for processing transparent PC.
Type 3. PA screw, for processing PA(Nylon), like PA6, PA66 etc.
Type 4. PMMA screw, used for making product with thick wall.
Type 5. PET screw, for processing PET, like used for making PET preform.
Type 6. PVC screw. For processing UPVC, PVC.
Type 7. Thermosetting screw. For processing thermosetting plastic, like PF(phenolic resin)
Type 8. Elastomer screw, for processing TPR, TPU, TPE
Type 9. Mixing type screw, for processing plastic filled with pearl powder
Type 10. PTFE screw, special for processing PTFE
Type 11. BMC screw, special for processing BMC.

Material of screw and barrel.
38CrMoAlA (JIS SACM645)
SKD-61 (4Cr5MoSiV1)

Hard chrome plating
High-frequency quenching
Alloy powder spray welding

Technical Parameter:
Hardness After Hardening & Tempering: HB280-320
Nitrided hardness: 950-1100HV
Nitrided layer depth:0.50-0.80mm
Nitrided brittleness: Less than 2 level
Surface roughness: Ra 0.4μm
Linearity of screw: 0.015mm/m
Bimetallic layer depth: ≥3mm
Bimetallic hardness: HRC60-72
Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.025~0.10mm

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