Size:
Screw diameter: 20-500mm
Maximum screw length: 10000mm
Barrel inner bore diameter: ø 500mm
Material 38CrMoAlA
40CrMo
42CrMo
High quality alloy steel
Technology: Nitriding treatment
Alloy coating sparying
Heating treatment
Screw fully hardening
Specification: Depth of nitrition layer 0.5-0.8mm
Nitriding treatment, surface hardness: 900-1000HV
Fragility of nitrition: Less than grade 1
Surface roughtness: Ra 0.4um
Surface of hardness of nitrated Cr coating layer ≥ 950HV
Thickness of Cr coating layer: 0.03-0.08mm
We have professional engineer and staffs to check every detail and dimensions from the raw materail, nitrding treatment and super grinding. We do the crucial nitriding treatment by ourself, we have nitriding ovens in depth8000mm, and do nitriding treatment in 7 days and nights, which greatly ensure the hardness of screw barrel.
What is the packaging?
1) Wooden case package
2) Plastic film package
3) Suitable to transportation
4) As buyer request
5) One piece into one package
Payment: T/T, Western union, moneyGram and so on.
Our office:
1 Our Strength: We have an experience of more than 20 years of manufacturing and designing Plastic machines, varied Screws and Barrels and spares. We concentrate on improving quality, updating design, enhancing service and after service.
2 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.
3 Location advantage: Located in -Ruian Town in Wenzhou City, near to Ningbo Port and Shanghai Port.
4 Market areas: Global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Middle East etc. Welcome to visit our company.
FAQ:
Q1: What's your biggest concern?
A: Q------qulity more than 20 years' expierence + professional high technology production
Team + strict product inspection = high qulity
P------price large scale production + full set of independent production = reasonable price
Q2: Guarantee time and after-sale?
A: One year guarantee time, after one year, we have professional after-sales department
Welcome to contact us for more detail information and inquiry.
Please leave a message or inquiry below.
We will reply within 24 hours*7days*12monthes. Thanks for your cooperation!
Welcome standard-product inquiry, Welcome OEM inquiry.
Audited Supplier 
){kind=link}