ZHONGYANG SCREW is one of the most history and famous screw barrel brand in China. We have professional and experienced teams in every department of our company. We think professional, quality and service is the basic of business. If you want reliable and helpful screw barrel, we will be your best choice! Please kindly find our detailed information as following:
Product Display:
Specification:
Screw Diameter: D15-D300
L/D ratio: 15-46
Product classification:
Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and vented type etc.
Base Materials:
1.38CrMoAIA(JIS SACM645)
2.42 CrMo (AISI 4140)
3.4Cr5MoSiV1(JIS SKD-61)
4.9Cr18MOV
5. HPT
Bimetallic alloy materials:
1. Fe-based alloy
2. Ni-based alloy/Deloro alloy
3. Co-based alloy
4. NiCo-based alloy
5. Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: >950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year
Experienced manufacturer, focus on quality and service.
Workshop Display:
Terms and Conditions:
Means of transport: Ocean, Air, Express
Production time: About 20-30 days after we receive the advanced payment
Production Process:
Receiving orders - Designing & Drawing confirmation - Blanking Thermal refining - Heat treatment - Rough Turning - Polishing - Drilling for barrel - Semi Finishing Machining - Bimetallic welding - Centrifugal casting for barrel - Polishing - Nitriding treatment(120 hours) or High frequency quenching - Hard-chrome plating - O. D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing & Shipping
ZY SCREW's advantage:
First-class designing and researching team;
High quality and durable products of screw barrel;
Most professional sales who can serve for you timely;
Best customer service especially after-sale service;
Powerful company's strength support long-term cooperation.
Welcome to contact us, Camille will reply you timely!
Audited Supplier 
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