High Intensity Customized Al2O3 Alumina Ceramic Sleeve

Product Description

Product Description

Alumina ceramic flange tubes

Alumina ceramic sleeves are sintered at ultra-high temperature with 95%,99%,99.5% high-purity alumina raw materials, integrated flange and tube body structure. Products adopt precision CNC grinding for flange sealing surface and inner bore, stable size and excellent sealing performance.

alumina ceramic liner tubes

Material Grade: 95% /99% /99.5% Al2O3 Alumina Ceramic
Bulk Density: ≥3.60 g/cm³ (95%), ≥3.83 g/cm³ (99%), ≥3.89 g/cm³ (99.5%)
Vickers Hardness: HV 1500–1620, Mohs hardness ≈9
Water Absorption: 0%, fully dense structure
Continuous working temperature: 1550℃(95%),1650℃(99%),1700℃(99.5%)
Excellent electrical insulation; low dielectric loss under high frequency & high voltage
Chemically inert, resistant to weak acid, weak alkali, inert gas and most corrosive atmospheres
Dimensional tolerance controllable: ±0.02–0.1 mm; higher precision tolerance available upon request
Optional structure: single flange, double flange; flange surface can be polished for vacuum sealing

Alumina pipe

Integral forming flange structure, avoid assembly gap, better sealing effect compared with assembled ceramic flange

Zero water absorption, air tightness stable under vacuum environment, suitable for vacuum furnace & coating equipment

Outstanding high voltage insulation performance, prevent electric breakdown in high-temperature electric heating equipment

Anti-oxidation, not easy to deform under long-time high temperature circulation

Support customized outer diameter, inner diameter, length, flange thickness, bolt hole position according to technical drawings

Technical Specifications

(Only for your data reference)

AluminaPurity	92%	95%	96%	99%	99.6%
Color	White	White	White	Ivory White	White
Volumedensity	3.45g/cm3	3.5g/cm3	3.7g/cm3	3.75g/cm3	3.9g/cm3
Water Absorption	0	0	0	0	0
Flexural Strength	300Mpa	300Mpa	320Mpa	330Mpa	330Mpa
Vickershardness	1300	1400	1400	1800	1800
DielectricConstant	10(at1MHZ25℃)	10(at1MHZ25℃)	10(at1MHZ25℃)	10(at1MHZ25℃)	10(at1MHZ25℃)
Modulus of elasticity	350Gpa	350Gpa	350Gpa	370Gpa	370Gpa
thermalconductivity(30℃)	18W/M.K	24W/M.K	24W/M.K	25W/M.K	28W/M.K
Volume resistivity	10^14Ω•cm	10^14Ω•cm	10^14Ω•cm	10^14Ω•cm	10^15Ω•cm
Dielectric strength	20KV/mm	20KV/mm	20KV/mm	20KV/mm	30KV/mm

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ISO9001:2015 Quality Management System

CE Certification — European Safety Standard

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Period of validity:
from2024.10.17 to 2027.10.25
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Reliable Fragile Product Packaging & Comprehensive Shipping Protection

Targeting the fragile, high-precision characteristics of industrial ceramic and quartz products, we adopt standardized export-grade shockproof packaging and professional global transportation solutions. Finished products go through independent wrapping, anti-collision foam filling and thickened carton or wooden box reinforcement, greatly reducing the risk of breakage, scratch and deformation during transit. We support customized brand packaging, exclusive shipping marks and standardized export packaging standards, and adapt to multiple transportation modes including sea freight, air freight and international express. With mature logistics docking experience and full-link cargo protection measures, we aim to improve the safety and integrity of product delivery for global industrial customers.

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Independent R&D Innovation + Verified Similar Overseas Project Cases

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FAQ

Q1: Can you provide exclusive customized solutions for special project demands? 
A1: Yes. In addition to conventional OEM and ODM customization, we can develop exclusive product structures, adjust technical parameters and optimize solutions according to special project standards, regional industry specifications and personalized buyer requirements, providing one-to-one customized technical support.
 
Q2: Do you support third-party factory inspection and product random testing? 
A2: We support on-site factory audit and offline random inspection by buyers or authoritative third-party institutions. Our standardized production process, complete quality records and standardized management system can comply with mainstream international factory inspection standards.
 
Q3: How do you ensure on-time delivery for bulk orders? 
A3: We have a scientific production scheduling system and sufficient material reserve chain. According to order quantity and delivery cycle, we will formulate a detailed production plan, arrange special personnel to track progress in real time, and effectively avoid delivery delays to ensure stable and punctual shipment of bulk and urgent orders.
 
Q4: Why is your factory price more stable than trading companies? 
A4: As a direct manufacturer, we control all links from raw material procurement, production processing to finished product output. There is no intermediate markup, and we can adjust costs according to long-term cooperative orders, maintaining stable and transparent pricing for long-term strategic partners.
 
Q5: What customized service items can you support besides product structure? 
A5: Besides structural size and precision tolerance customization of industrial ceramic and quartz products, we support personalized services including custom deep processing, surface treatment, laser marking, custom packaging and technical document customization to meet different industrial and brand standards.