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Blow Film Machine Screw Barrel 
  • Blow Film Machine Screw Barrel 
  • Blow Film Machine Screw Barrel 
  • Blow Film Machine Screw Barrel 
  • Blow Film Machine Screw Barrel 
  • Blow Film Machine Screw Barrel 

Blow Film Machine Screw Barrel 

Product Description

blow Film Machine screw barrel

Diameter of single screw
: D15mm~D300mm

L/D: 12~45

Max. Length: less than 10000mm

Scope of application: pipe, film, profile, sheet, pvc pe/pew pc pelleting etc.

For good plasticizing effect, we have different design of screw & barrel to meet your requirements

Screw Type:

Gradient-type, mutant, wave type, barrier type, dual type, shunt type, separate type, exhaust type, pin type, mixed type, double-headed type, three-type, long type, grain type.


Commonly used material is 38crMoAIA(nitrogen treatment),it can be changed as per your requirements. According to different usage, the choose for alloy is different, some require for abrasion-resistant while some require for corrosion-resistant. For standard, we have Fe-based, Ni-based, W2C alloy, Tungsten alloy etc for choice

Materials & Processes


38CrMoAIA 41CrAMo7


High Quality Duplex Stainless Steel


High Quality Powder Metallurgy Materials         


Hard Metal Cold/Thermal Spraying Technology

Zinc 3# Steel

Advanced Nitriding Technology

Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology    

Screw structure and compression ratio can be designed according to different products and mixtures

Technical Parameter

Nitrided Case Depth


Nitrided Hardness


Nitride Brittleness

≤Grade One

Surface Roughness


Screw Straightness


Alloy Hardness


Alloy Depth


Chromium Coating Thicknss


blow film machine screw barrel

Bimetallic Alloy Materials 1)Fe-based alloy 2)Ni-based alloy/Deloro alloy
3)Co-based alloy 4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Double-alloy level Level A - containing Tungsten of 40%
Level B - containing tungsten of 25%
Level C - containing tungsten of 9.5%

Bimetallic screw: Base material 38CrMoAlA, sprayed alloy powder on the screw flight, prolong life of screw.

Bimetallic barrel: Base material 40Cr, casted a 2-5mm wear resistant and corrosion resistant bimetallic layer

on the barrel inner wall, so it has much longer using life than nitrided barrel.

We could design for you for any Genneral plastic materials(such as PP PE ABS AS PS PC PET PA PVC PMMA TPU PU etc.)and Enginneering plastic materials(such as ABS+PC BMC LCP PPS PAR PA-6 PA-66 PA9T PA4T CPVC PVDF POM Glass fiber etc.)

About Ours:

blow film machine screw barrel
blow film machine screw barrel
Our Certificates:
blow film machine screw barrel
blow film machine screw barrel

Zhoushan Qunying Plastic Machinery Manufactory

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  Established in the year 2003, we, "Zhoushan QUNYING plastic machinery" are engaged in manufacturing and supplying a diverse range of Screw & Barrel and machines. These products are precision engineered using the best quality raw material that we procure from a trusted vendor base. Furthermore, the long lasting life, resistance against corrosion, dimensional accuracy, robust construction and economical prices of our range makes it suitable for heavy usage in most of the industrial applications. Our dedicated team of professionals ensures that we produce only defect-free products so as cater to the long list of clientele. We possess great process knowledge for designing different set of products according to the specific requirements of our customers. Besides, our team members work in complete synchronization with the clients for meeting their varied industry needs and demands.

Company Info
  • Company Name: Zhoushan Qunying Plastic Machinery Manufactory
  • Representative: Lu Miaojun
  • Product/Service: Bimetallic Screw Barrel , Injection Molding Screw , Extrusion Screw Barrel , Tungsten Carbide Screw Barrel , Twin Screw Barrel For Pipe , PVC Screws Barrels
  • Capital (Million US $): 300000RMB
  • Year Established: 2003
  • Total Annual Sales Volume (Million US $): US$2.5 Million - US$5 Million
  • Export Percentage: 21% - 30%
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: Fewer than 5 People
  • OEM Services Provided: yes
  • Contact Person: Ms. LU
  • Tel: 86-580-8340889
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