Ecvv Trade
Zhoushan Sheen Machinery Co., Ltd.

China Manufacturer with main products: Screw Barrel, Single Screw Barrel, Conical Twin Screw Barrel, Parallel Twin Screw Barrel, Bimetallic Screw Barrel, Extruder Screw and Barrel,...

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Rubber screw and barrel

FOB Price: 100.00 - 1,000.00 USD/Set
Supply Ability: 300 Set/Sets per Month
Shipping: 25 working days after 30%payment
Payment Terms: L/C, T/T, Western Union
In Stock

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Zhejiang in China
Packaging Details: 1st, products (screws or barrels) will be brushed anti-corrosive oil 2nd,packed with film,bru

Quick Details

  • Model Number: 7
  • Brand Name: sheen
  • nitriding treatment: alloy material


Rubber screw and barrel


Cold Feed Pin barrel screw specifications:Φ60-?300    L/D=12-18


Rubber cold feeding screw specifications:Φ45~Φ300    L/D=8-20


Rubber hot feeding screew specifications:Φ40~Φ300    L/D=4-6


We can design suitable screw and barrel for you according to different raw material and products!

Screw barrel Material


Heat treatment


Nitrided treatment

42CrMo, AISI4140

Hard-chrome plating


High Frequency quenching


Bimetallic frist,then nitrided

YPT72, 4Cr5MoSiV1




Base material 38CrMoALA chemical composition and main feture

This kind of material is made in China from SHANGHAI BAOSTEEL COMPANY.





















Screw barrel technical details

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%

Surface Treatment

Heat Treatment

High Frequency Treatment

Nitriding treatment(120 Hours)

Depth of Nitrided Layer: 0.5-0.8 mm                             

Hardness of Nitrided Layer: 900-1020Hv (HRC56°-65°)

Hard Chrome Plating treatment:

Thickness of Hard Chrome Plating Layer: 0.05-0.10mm             

Hardness of Hard Chrome Plating Layer: ≥950HV

Nickel alloy plating.treatment:

Bimetallic Barrel/Cylinder: Centrifugal Casting (Inlay Alloy)     

Bimetallic Screw: Plasma Alloy Coating Spraying

Depth of Bimetallic Layer: >2mm                                 

Hardness of Bimetallic Layer: HRC55°-72°

Basic information

Roughness of the surface:Ra0.4um                            

Linearity of the screw: ≤0.015mm

Linear axis limit: ≤0.02mm                                    

Hardness after Hardening & Tempering: HB240-280

Fragility of Nitration:≤Two class

Material Application

1)General Plastics                                


3)PA + GF(Glass Fiber)                        

4)Flame-resistant Reinforced Plastics

5)Modified Engineering Plastics             

6)All kinds of Mixed Recycled Material(in Scrap or Granule),etc

General Terms

Means of transport: Ocean,Air,Express

Production time: About 25 days after we receive the deposit and lead time will different according to the order quantity!

Our screw and barrel processing flow

Customer order----Product design(customer drawing)---Production flow arrangement----Material Procurement---Hardening and tempering--

--Drilling---Rough turning---Rough thread rolling(Alloy spray welding)---alignment---Fine thread rolling---Mixing---Alignment---High frequency treatment---Alignment---Polishing---Grinding----120 hours Nittriding treatment---Acid piclking----Polishing---Chrome plating----O.D.Grinding---Packaging and Shipping.

Package details

1st, products (screws or barrels) will be brushed anti-corrosive oil    

2nd,packed with film,brush oil

3rd,packed in the wooden case

Service Process

Service Guarantee

  • Free Service Charge

    ECVV doesn't charge any service fee to Buyers for buying this product.

  • ECVV Supply

    ECVV is responsible for supply, and provides product quality inspection, fund supervision and supply chain services.

  • Product Quality Commitment

    ECVV China Sourcing Agent will assess the reputation and supply ability of the factory and conduct field trips to select the high-quality Chinese factories for buyers.

  • Deposit Service Commitments

    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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