Technical Parameters for plastic screw and barrel:
Material: 38CrMoAIA 40CrMo 42CrMo high quality alloy steel
Technology: Nitriding treatment, alloy coating spraying, heating treating, screw fully hardening.
Depth of nitrition layer: 0.5-0.8mm
Nitriding treatment surface hardness: HV>=900-1000
Fragility of nitrition: Less and grade 1
Surface roughness: Ra 0.4um
Streightness of screw: 0.015mm
Surface of hardness of nitrated Cr Coating layer: >=950HV
Hardness of Cr coating layer: HRC55-62
Thickness of alloy plating: 0.03-0.08mm
Depth of alloy layer: 2mm

Remarks: We can design and manufacture various kinds of screw barrels according to the customer's requirement.


Technological Process:
Blanking---RoughMachining---Quenching & Tempering ---Semi Finishing Machining---Finished Product---DetectingNitring/Alloy Processed--- Finish Machining



About us:
Zhejiang pinbo plastic machinery co.,ltd is located in ruian wenzhou city with brand of PYM(Former Ruian yumin machine screw co.ltd since 1988) , it has its great advantages as followings:
A> long time experience and history screw barrel for shoes machine
B> long time nitriding treatment and heating treatment by itself extruder screw and barrel / vent screw barrel for pvc
C>advanced Fanuk series CNC computer-controlled milling machines
D>depth hole drilling machine in 18meters length, which ensure the straigtnss of barrel inside.
E> CAD drawing confirmation before start making
F> Prompt after sale service
G>Land owner and registration capital 25, 000, 000RMB

Why choose us:
1. We have long history and experience working in the field
2. We have the most advanced equipments and technique in our industry
3. We have professional engineers and staffs
4. We have 100% quality ensure system and 24hours after-sale service system
5. We own two lands of workshop, covering 5000cbms.


Our serivices

I Want to express my thanks to all my dear clients~~~~~~Thank you for visiting our website and glad to see you.
Anyone won't buy any products from strangers until they know each other better, but it's a long time for you to understand a strange supplier well, then how you can find a best supplier during so many factories is a problem! Cathy believe that every customer is the turning point of her life, she is very gald to make friends and do business with you, if you trust her so much, just give each other an opportunity to know each other better!
Thank you so much! !

Your dear Cathy