Factory Price Conical Twin Screw and Barrel

• Customization: Available
• Warranty: 3-12months
• Product Type: PVC Pipe
• Model NO.: at buyer option
• Screw No.: Double-screw
• Automation: Automatic
• Computerized: Computerized
• Certification: ISO9001:2008
• Customized: Customized
• Condition: New
• After-sales Service: 24hours Within 7days
• Leading Time: 35-45days
• Hardness of Nitrided Layer: Hv950-1000
• Nitrided Layer Thickness: 0.55-0.70mm
• Steel Material: 38crmoaia
• Surface Roughness: Ra0.4
• Warranty and Service: 1 Year
• Delivery Ways: by Sea or by Air
• Transport Package: Wood Case
• Specification: ISO9001: 2008
• Trademark: DONGBIN
• Origin: China
• HS Code: 84779000
• Production Capacity: 300

Product Description

Specification

Φ35/Φ75	Φ45/φ95	Φ45/φ100	Φ50/Φ105	Φ51/Φ105	Φ55/Φ110
Φ65/Φ120	Φ60/Φ125	Φ65/φ132	Φ80/Φ143	Φ80/Φ156	Φ92/Φ188

Materials
38CrMoAIA/SACM645/SKD11/SKD61/42CrMo

Duplex stainless Steels
GH3#
Power Metallurgy Raw Material
Cold/Thermal Spray Hard Metal Process
Advanced Nitriding Process
Corrosion&Abrasion Resistance Bimetal Spraying Process
 
Technical Index

Product	Screw&Barrel
Tempering hardness	HB240-280
Hardness of nitrogen treatment	HV950-1000
Depth of nitrogen layer	0.55-0.70
Nitrided brittleness	Less than grade 1
Surface roughness	Ra 0.4
Screw straightness	0.015mm
Hardness after nitriding	≥900HB
Chromium-plating depth	0.05-0.10mm
Alloy hardness	HRC55-62
Alloy Depth	1.5-2.0mm

 

Processing Steps

01 Blanking-02 Quenching and Tempering-03 RoughTurning-04 Detecting-05 Semi Finishing Turning-06 Aging Treatment-07 Rough Grinding
08 Crossed Thread-09 Milling Cutter Roove-10 Turning Thread Groove-11 Tempering-12 Polishing Thread Groove-13 Fine Gringding-14 Milling Keyway-15 Fitter-16 Detecting-17 Nitriding or Bimetallic Treatment-18 Cut Off Process Allowance-19 Polishing Thread Groove-20 Detecting

  
Our Service
Warranty and service: 1years
 
 
Our Advantages
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly