conical double screw cylinder for PVC pipe

We can produce screw and barrel according to your design,

Also we can design screw and barrel according to your requirements.

Our advantages:

The excellent complete equipments

Professional team of engineers

The experienced workers

Wearable and durable screw and barrel

Over 20 years experience on making screw and barrel

 Located in the biggest screw town of China, which has convenient traffic.

Process 

confirm the design--arrange the order--Laying-off the material--drilling--

rough turning--rough grinding--hardening & tempering--finish turning outer

diameter--rough milling threand--alignment (removal of material deformation)--

finished milling thread--polishing--rough grinding outer diameter--milling the end

spline--nitriding treatment--fine grinding--polishing--packaging--shipping

Technical specifications

Technical Index

1.Hardness after hardening and tempering: HB280-320 

2.Nitrided Hardness: HV850-1000 

3.Nitrided case depth: 0.50-0.80mm 

4.Nitrided brittleness: less than grade 2

5.Surface roughness: Ra 0.4

6.Screw straightness: 0.015 mm

7.Surface chromium-plating's hardness after nitriding: ≥900HV

8.Chromium-plating depth: 0.025~0.10 mm

9.Alloy Hardness: HRC50-65

10.Alloy depth: 0.8~2.0 mm

Materials & Processes

1.Quality 38CrMoAlA (JIS SACM645) 

2.Quality Duplex Stainless Steels

3.42 CrMo (JIS SCM440)

4.40Cr

5.GH113

6.SKD11

7.SKD61 (H13) 

8.Gr12MoV

9.Quality Powder Metallurgy Raw Materials

10.Cold/Thermal Spray Hard Metal Process

11.Advanced nitriding Process

12.Corrosion & Abrasion Resistance Bimetal Spraying Process

products application

company introduce

Zhejiang Jinteng Mchinery Manufacture Co.,Ltd through more than 20 years development,has already become the biggest specialized in manufacturing the screws and cylinders of plastics machine manufacturer.

The screw and barrel made by our company is widely suitable for domestically produced, imported 30-80000gram casting machine,Diameter 15-300mm single screw extrution machine ,Diameter 45/90-92/188mm conical twin screw extruder,Diameter 45/2~150/2mm parallel Twin Screw Extruder machine and each kind of Products through the quenched and tempered,qualitative,nitriding,fine grinding or spray welding alloy,polishing process technology.

In strict accordance with the ISO9001-2008 international quality system,to ensure the quality of product reach the international advanced level.

our other products,different kinds of screw and barrel

♦ conical twin screw and barrel
♦ parallel twin screw and barrel
♦ Single Screw and Barrel for Extruder 
♦ Injection machinery screw and barrel
♦ rubber screw and barrel
♦ bimetallic alloy screw and barrel

If you have any requirments in screw and barrel, feel free to contact us.