1.PVC extrusion double screw and barrrel 2.38CrMoAlA+ special alloy 3.Processed to our drawing or OEM.

Techincal Advantages of  PVC extrusion double screw and barrrel/parallel twin screw and barrel :

1.Advanced Nitriding Technology 2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy

3.We use special alloy powders being sprayed and welded on the screw's ridge,and 

 use different alloy and welding methods for the screw of different functions.

Especially application:

Rubber,various high glass fiber, mineral fiber and PPA,PPS, PA6T, LCP,VO fire protection, ferrous power, magnetic powder and etc. Meanwhile,Used for PVC + 30% CaCo3, recylced plastic material,etc

co-rotating PVC extrusion double screw and barrrel/parallel twin screw and barrel
Diameter	Φ15mm-Φ350mm	Designing	Screw structure and compression ratio can be designed according  to different products  & different output requirement.
Materials	38CrMoAlA  (JIS SACM645) SKD61	Application	PVC plate, pipe, profile, pellet and mould, at the same time, it solved the technical problem of low foaming, high foaming, high filling, wear and corrosion.
Nitride Case Depth	0.5mm-0.8mm	Technology	1)Longer time Gas Nitriding treatment  2)special anti-wear & abrasion alloy (bimetallic) 3)tungsten carbide 4)cobalt base alloy 5)stainless steel  6)Gh113 nickel based alloy
Nitride Hardness	950-1020HV	Packing	Wrapped up by film in wooden
Nitride Brittleness	≤Grade One	Payment Term	T/T , L/C
Surface Roughness	Ra0.4um	Delivery Term	25 working days
Screw Straightness	0.015mm	Port Departure	Shanghai/Ningbo
Alloy Hardness	HRC58-62	Min. Order	1 set
Alloy Depth	0.5mm-0.8mm	Common Nitrided:2.5-4years Bimetallic: much longer lifetime.
Guarantee

Advantages

1. Parallel twin screw and barrel has the advantage of lower rotation speed, smaller shear   stress between the  small screw

2. Good plasticization, high productivity, small shear force, stable pressure , less wear and tear and low cost.

3. Parallel twin-screw and barrel is widely used in PVC products processing, especially for the production of PVC products with the output over 350Kg / h, because the parallel twin-screw and barrel costs less than conical twin-screw and barrel while it has more mature technology.

4. Parallel twin-screw and barrel is successfully applied in PVC plate, pipe, profile, pellet and mould, at the same time, it solved the technical problem of low foaming, high foaming, high filling, wear and corrosion.

International Standard Packing:

 

 

  

 

we can make any specification of extruder screw barrel and injection screw barrel for Haitian, Demag, Engle, Klaus-maffei, Nigro bossi, arburg,NPM, BOY, Husky, Fanuc, billion, Sumitomo, Nippon Steel, Toshiba, Nissei, Mitsubishi and etc. We also can supply all types of screw and barrel according to your different requirements. 

About O.S.D :

Our Strength: We have an experience of more than 20 year of manufacturing and designing Plastic machines, varied Screws and Barrels and spares.  We concentrate on improving quality, updating design and enhancing service. Our products: Screws Barrels for Injection, Extrusion, and Blow Molding applications; relevant accessories(such as die head, gearbox, filter screen changer and so on); plastic processing  machinery. Location advantage: located in China's Screw Town - Jintang Town in Zhoushan City, near to Ningbo Port and Shanghai Port. Market areas: global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Middle East. We promise: We assure the customer benefits, We provide competitive price, We Emphasis On Cooperation. 

Want to know more information about our products ?

     Warmly welcome to contact us by below ways: 

     * Hot-line :  0086-13666718087 

         * Skype   :  oushengda

        * Hotmail : oushengda2

  Nancy will be very happy to answer your questions in 24 hours