Screw For Injection
Accessories of
Screw & Barrel For
Conical Twin Screw
Parallel Twin Screw
The Bimetallic
Rubber screw
planet screw
Co rotating parallel
Gearboxes series
All types of screw
Material application
Plastic Extruder

The normal material of Screw and Barrel:

Hardness after hardening and tempering:HB260°~320°
Nitrided Hardness:HV950°~1000°
Nitrided Depth:0.50~0.7mm
Nitrided Brittleness:above 2 stage
Surface Roughness:Ra0.4
Screw straightness:0.015mm
Hardess of surface chromium-plating after Nitriding:HV≥950HV
Chromium-plating Depth:0.05~0.10mm
ALLoy Depth:0.8~2.0mm
Alloy hardness:HRC56°~65°
Parallel Twin Screw & Barrel

Process Specifications of screw and barrel:

Ф60/2, Ф65/2, Ф70/2, Ф72/2, Ф75/2, Ф80/2, Ф85/2, Ф90/2, Ф93/2, Ф100/2, Ф105/2, Ф110/2, Ф115/2, Ф120/2, Ф125/2, Ф130/2, Ф140/2, Ф150/2, Ф160/2, Ф170/2, Ф180/2, Ф190/2, Ф200/2, Ф250/2

Types of screw:

For good plasticizing effect , we have different design of screw barrel to meet customer’s demand .Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type,exhaust type, pin type, mixed type, double- head type, three-head type, multi head type etc.



Screw material:


 raw material:  The finished product Processing requirements:
 38CrMoAlA,SACM645,42CrMo  Nitriding treatment
 42CrMo,AISI 4140  hard chrome coated layer
 4Cr5MoSiV1,SKD-61,SKD-11  Sparying bimetal alloy layer and nitriding treatment
 HPM38,SI36,SUS440,9Cr18MoV  High frequency quenching
 GHII3  Airset in high temperature


barrel material:


 raw material:  The finished product Processing requirements:
 38CrMoAlA,SACM645  Nitriding treatment
 Cr12MoV,Cr12  high frequency quenching
 38CrMoAlA,SACM645,40Cr,AISI4140,42CrMo  Bimetallic of The inner hole centrifugal casting
 GHII3  Airset in high temperature


scope of application:

WPC PVC.WPC PE,Super high molecular sheet,1/2 high Calcium buckle,50-400 high Calcium pipe,50-300 high Calcium Profile,soft PVC sheet,XPS-PVCetc.PP,PE,ABS,PVC,raw material,pelletzing,pipe,profile,sheet etc.

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