Zhoushan Jed Machinery Co.,Ltd

Professional extruder screw product manufacturing and trade service provider in China



Conical Twin Screw Barrel

Application: Made for PP / PE / PPR pipe extruder

Place of Origin: Zhejiang,China

Brand Name: JED

Material: 38CrMoAlA

Process: nitriding & bimetallic

Nitrided Hardness: HV900-HV1000

Nitrided Case Depth: 0.45-0.8mm

Nitrided Brittleness: Less than Grade 2

Surface Roughness: Ra 0.4

Screw Straightness: R0.015mm

Alloy layer: 2-2.5

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Packaging & Delivery

Packaging Details: PE Casting Film and Standard Wooden Case

Delivery Time: 30-45 Days after Deposit Payment

Technical Specification

Design DetailsScrew
I TYPE:inside is water/oil cooling system
II TYPE:outside is oil cooling system
I TYPE:outside is air cooling system
II TYPE:out side is copper pipe around cooling system 
AccessoriesStop ring+washers to adjust the space between screw and barrel
Technical SpecificationMaterial:High quality 38CrMoAlA
Process:Advanced nitriding & bimetallic process
Hardness After Hardening & Tempering:HB280-320
Nitrided Hardness:HV900-1000
Nitrided Case Depth:0.45-0.8mm
Nitrided Brittleness:Less than Grade 2
Surface Roughness:Ra 0.4
Screw Straightness:0.015mm
Alloy Hardness:HRC 50-65
Alloy Depth:0.8-2.0mm
MOQ1 set (1 pair of screws and 1 pc barrel)
TypeConical Twin Screw and Barrel

Brief application:

1. Application: PVC

2.Production output:130kg/h~150kh/h

3.Lifetime: 20,000 hours

4.Old order from: West Europe,East Europe,South America,South Africa,Middle 


1.Accurate size 

2.High capacity design

3.Wear resisting material

4.Easy maintenance

Screw & barrel use material

Raw materialThe finished product processing requirements
38CrMoAIA, SACM645Nitriding treatment
Cr12MoV, Cr12,Alloy steel
38CrMoAIA, SACM645, 40Cr, AISI4140,
Bimetallic of the inner hole centrifugal casting
GHII3nature hard after high temperature

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.

Refer to the following specification and small part be designed according to the compression ratio: Φ15/Φ30, Φ25/Φ55, Φ35/Φ75, Φ40/Φ83, Φ45/Φ90-99, Φ48/Φ112-117, Φ50/Φ105-110, Φ51/Φ105-120, Φ55/Φ110-125, Φ58/Φ125, Φ60/Φ125-129, Φ65/Φ120-132, Φ68/Φ147, Φ70/Φ150, Φ74/Φ156-162, Φ80/Φ143-156-162, Φ86/Φ177, Φ92/Φ184-188, Φ95/Φ193, Φ105/Φ203

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-PVC etc.

PP、PE、ABS、PVC, raw material, pelletzing, pipe, profile, sheet etc.

For Pipe (WPC) Extrusion

Technical parameter

ModelMotor power
Screw dia.
Screw rotation speed
PVC production

For Pipe Extrusion

Technical parameter

ModelMotor power
Screw dia.
Screw rotation speed
PVC production

Screw Process:

Blanking ->Punching ->Rough turning ->Hardening & Tempering ->Finish turning ->Rough Milling ->Finish Milling ->Make grooves for bimetallic ->Bimetallic by PTA ->Rough Grinding ->Rough polishing ->Make splines or Keys ->Nitriding ->Finish Grinding ->Polishing ->Packing & Delivery

Barrel Process:

Blanking ->Punching ->Rough turning ->Rough Boring ->Hardening&Tempering ->Finish Boring(0.4-0.8mm) ->Make grooves for bimetallic ->Bimetallic by PTA ->Finish Grinding ->Finish turning ->Milling the feeding hole & exhausting holes ->Nitriding ->Make other small holes,thermometer hole,location hole->Grinding surface of feeding hole & exhausting hole ->Polishing ->Packing & Delivery


1.What is Jed-Machinery feature goods?

Jed are leader Producer in:

-HDPE/LDPE/LLDPE blowing film extruder single screw and barrel:different design to meet client request on production

-PP/PE granulation or recycling screw barrel:New geometry design according experience modify.

-PVC pipe/profile/componds/sheet/foam board:Professional Produce Experience on both China & Europe extrusion machine.

-HDPE/PPR pipe high capacity single screw barrel:Big L/D design,high speed,high capacity.

-Haitian,ChenHsong brand machine injection screw barrel supplier in China

2.Jed main market

-Europe / Middle East / South America / South Africa.

3.Any oversea service or not?

-Oversea service is available if client request. Buyer afford cost.

Company Information

ZHOUSHAN JED MACHINERY MANUFACTORY is a professional manufacturer of extruder screw barrel, injection screw barrel, parallel twin screw barrel, conical twin screw barrel, rubber screw barrel, bimetallic screw barrel and other various types of screw barrel. At present, Jed SCREW have a professional design experienced production team. We are located in east of Zhoushan city, zhejiang province, close to Shanghai, Ningbo port.

ZHOUSHAN JED SCREW has strong technical force, equipped with advanced equipment and strict tests. Mostly products materials are selected from high quality powder alloy steel with the best materials to exploit market and most new materials, add reasonable process design through tempering, molding, qualitative, nitriding, fine grinding, polishing process of refining. So that the screw barrel has super-hard resistance wear, corrosion resistance, fracture resistance. In order to meet the needs of our customers, we company also provides product design, surveying and mapping, sample processing and repair manufacturing business. All of our products comply with international quality standards (ISO9001-2000). Since the establishment of the company, we are getting greatly appreciated and praise from new and old customers around the world. We will insist on the principle of quality, honest to customers, and provide our customers new information of the products and offer good quality products with good price.

Till now, our screw barrels have been exported to more than 30 countries all over the world, like USA, India, South Africa, Turkey, Russia and so on. We sincerely welcome customers to negotiate consultation and exchanges guidance. Your satisfaction is our eternal pursue and goal.





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