Basic Info.

Model NO. all types Transport Package Plywood Case Specification all types Trademark OULIN Origin China HS Code 84779000 Production Capacity 300-500 Sets Per Year

Product Description

Detail Information For Sinlge Extrusion Screw Cylinder for PVC:

Application: for rigid PVC profile extrusion

Customer's Requirement: good abrasive& corrosive resistance

Screw's quality: nitriding quality, 38CrMoAlA as base steel.

Barrel's quality: nitriding quality, 38CrMoAlA as base steel.


Detail Information For All Single Screw and barrel for Extrusion:

Main application: be used in extrusion for film, pipe, recycling, pelleting, sheet, profiles, rod and etc.

Specification: 
Diameter: Ø20mm-Ø500mm
L/D ratio: 15-53

Base material : 
SKD61
42CrMo
38CrMoAlA(JIS SACM645) from BAOSTEEL company.

Heat treatment:
Advance hardening and tempering
Nitriding treatment
Mid-frequency hardening

Technical Parameters:
Nitriding depth: 0.50mm-0.80mm                                
Nitriding hardness: HRC56-58                          
Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm  
Hard chrome layer hardness: HRC58-60
Hard chrome layer thickness: 0.025-0.1mm
Alloy layer depth: 2mm-3mm
Alloy layer hardness: HRC56-64 


OULIN SCREW:  YOUR LOYAL PARTNER FOR SCREW AND BARREL