ZY SCREW's advantage: Welcome to contact us, Camille will reply you timely!
Solid rigid centralizers are one series of casing centralizers as integral part of cementing process,provide positive standoff and centralization of casing string,remove the fluid for cement.The solid centralizers have steel or aluminum alloy,composite material construction,with high tensile and yield strength,shock,impact and corrosion resistant. Spiral or straight blade centralizers,roller centralizers are available. Sizes from 4 1/2 to 20 inch.
Solid Rigid Centralizer,Rigid Centralizer,Aluminium Solid Rigid Centralizer,Rigid Casing Centralizer ROTATE DRILLING MOTOR CO., LTD , http://www.tcbearings.com
Plastic Etruder Machines Hard Chrome Coated Screw Barrel 
Specification:
Screw diameter: 15mm-300mm
Maximal length: 8000mm
Barrel inner diameter: 15-300mm
Maximal length: 4000mm
Different bimetallic alloys are available for different raw materials.
1. Tunsten alloy screw and barrel
2. High output
3. Low power
4. Low noise level
5. High quality material
Application: Injection molding machine, extrusion
Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
(3)9Cr18MOV
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.
Focus on quality and service.
Experienced manufacturer, we will be the best choice.
Workshop Display:
Products Application:
1)General Plastics, PVC
2)Material compounds CACO3, glass fiber, recycle materials, stabilizer
3)ABS,TPR,TPU,PMMA,C-PVC,UPVC,RPVC,PET,EVA,PU etc
4)Scrap and waste plastic and PVC recycling
5)Modified engineering plastics
Terms and Conditions:
Means of transport:Â Ocean,Air,Express
Production time:Â About 20-30 days after we receive the advanced payment
Production Process:
Receiving orders -Â 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 - Â Hard-chrome plating - O.D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing &Â ShippingÂ
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;Â
Powerful company's strength support long-term cooperation.
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