Contact Platform Support
Help CenterInsulation Grade Aluminum Coil 3A21 for Waste Oil Tanks, Oil Ducts, and Building Materials
Product Spotlights
Related Products
-
Customizable PVDF PE HDP ACP Painted Aluminium Foil 1100 3003 3105 5052 Mill Finish Pre-Coated RollNegotiableMOQ: 100 Kilograms -
6061 Alloy Aluminum Coil Custom Thickness Aluminum Coil for Mechanical Processing PartsNegotiableMOQ: 100 Kilograms
-
White Coated 3003 Aluminum Coil for Roofing Gutter Rust-Proof Kitchenware UseNegotiableMOQ: 100 Kilograms
-
Custom Size Industrial Aluminum Coil Various Alloy Temper Aluminum Coil for Wide Industrial ApplicationsNegotiableMOQ: 100 Kilograms
-
Mill Finish Aluminum Coil 1060 1100 Pure Aluminum Coil for Building Roofing and DecorationNegotiableMOQ: 100 Kilograms
Wuxi Yansheng Technology Co., Ltd., established in 2017, is a professional manufacturer specializing in high-quality aluminum products. With a factory spanning 1,000–3,000 square meters and a dedicated team of 101–200 employees, we have built a strong reputation in the global market. Our Insulation Grade Aluminum Coil 3A21 is specifically engineered for demanding applications such as waste oil tanks, oil ducts, and building materials, offering exceptional corrosion resistance, thermal stability, and workability. This product combines the mechanical properties of the 3A21 alloy with a specialized surface finish that enhances insulation performance, making it a reliable choice for industrial and construction projects.
The 3A21 alloy (equivalent to AA3003) is a non-heat-treatable aluminum-manganese alloy known for its excellent corrosion resistance, moderate strength, and good formability. Our insulation grade coils undergo strict quality control to ensure uniform thickness, smooth edges, and consistent surface quality. Each coil is produced with a focus on meeting the rigorous demands of oil storage, ductwork, and architectural cladding, where durability and long service life are critical.
Key Features & Benefits
Outstanding Corrosion Resistance: The 3A21 alloy contains manganese, which provides a protective oxide layer that resists attack from moisture, oil residues, and chemicals commonly found in waste oil environments.
Excellent Thermal Stability: Suitable for applications where temperature fluctuations occur, such as oil ducts and storage tanks, the material maintains its structural integrity and does not embrittle over time.
Superior Workability: Can be easily cut, bent, stamped, and welded without cracking, allowing for complex shapes in tank linings, duct sections, and building panels.
Lightweight Yet Strong: Density of approximately 2.73 g/cm³, reducing overall load on supporting structures while providing adequate mechanical strength for industrial use.
Insulation Grade Surface: Special surface treatment (optional) enhances thermal reflection and reduces heat transfer, improving energy efficiency in oil tanks and ducts.
Long Service Life: Resistant to weathering and UV degradation, making it ideal for both indoor and outdoor building material applications.
Wide Range of Customization: Available in various thicknesses, widths, and tempers to meet specific project requirements.
Technical Specifications
| Property | Standard Value | Customizable Range |
| Alloy | 3A21 (3003) | Other 3xxx series upon request |
| Temper | H14 | O, H22, H24, H26, H18 |
| Thickness (mm) | 0.8 | 0.2 – 3.0 |
| Width (mm) | 1000 | 100 – 2000 |
| Tensile Strength (MPa) | 95 – 130 (H14) | Varies with temper |
| Elongation (%) | ≥ 8 (H14) | ≥ 3 – 20 depending on temper |
| Surface Finish | Mill finish | Embossed, stucco, brushed, coated |
Our coils are manufactured in accordance with international standards such as ASTM B209, EN 485, and GB/T 3880, ensuring consistent quality and dimensional accuracy. Each coil is tested for flatness, edge condition, and surface cleanliness before leaving our factory.
Application Advantages
For waste oil tanks: The corrosion-resistant surface prevents pitting and reduces maintenance costs, extending the tank's life by up to 50% compared to carbon steel.
For oil ducts: The smooth interior surface minimizes friction and pressure drop, while the thermal insulation grade helps maintain oil temperature, reducing energy consumption.
For building materials: Used in roofing, wall cladding, and insulation panels, the coil offers a lightweight solution with excellent fire-resistant properties (non-combustible) and high reflectivity, contributing to green building certifications.
Why Choose Wuxi Yansheng Technology?
As a manufacturer with over 6 years of export experience, we have shipped our products to markets across North America, South America, Europe, Africa, Oceania, and Asia. Our annual export value exceeds US$50 million, reflecting the trust and satisfaction of clients worldwide. We operate multiple production lines and maintain a strict quality management system certified by ISO9001, ISO14001, OHSAS18001, and other international standards. Our dedicated R&D team continuously improves product performance to meet evolving industry needs.
Our factory is located in Wuxi, Jiangsu, China, with convenient access to major ports including Tianjin, Shanghai, Qingdao, and Ningbo, ensuring fast and reliable delivery. We offer flexible packaging (standard export wooden pallets, waterproof wrapping, or custom) and full traceability documentation. Whether you need a standard coil or a specially customized solution, we are committed to providing high-quality products and responsive customer service.
Trust Wuxi Yansheng Technology for your Insulation Grade Aluminum Coil 3A21 needs. Contact us today for a quote or technical consultation!
Frequently Asked Questions (FAQ)
Q: What is 3A21 aluminum and how does it compare to 3003?
A: 3A21 is a Chinese standard alloy equivalent to AA3003 (Al-Mn alloy). It has very similar properties: excellent corrosion resistance, good formability, and moderate strength. The main difference may be in trace element controls, but for most applications (oil tanks, ducts, building materials), they are interchangeable.Q: Can this coil be used for food-grade applications?
A: While 3A21 is generally safe for indirect contact with food, if you require a specific food-grade surface, we can provide a coated or anodized version. Please consult with our sales team for your specific requirements.Q: What does “Insulation Grade” mean for aluminum coil?
A: Insulation grade refers to a surface treatment or coating that enhances thermal reflectivity and reduces heat transfer. It can also include a textured surface that improves the bonding of insulation materials. This feature is particularly beneficial in oil tank and duct applications to maintain temperature stability.Q: What thickness and width are most commonly used for waste oil tanks?
A: For tank linings, typical thicknesses range from 0.6 mm to 1.5 mm, and widths from 1000 mm to 1500 mm. However, the exact dimensions depend on the tank design. We can supply custom sizes to minimize waste.Q: Is this coil suitable for outdoor use?
A: Yes, the 3A21 alloy has excellent weather resistance. When used outdoors, a mill finish or protective coating (e.g., PVDF or polyester) can be applied for extended durability. We recommend consulting our technical team for specific environmental conditions.Q: Do you provide samples for testing?
A: Yes, we offer free samples (up to 0.5 kg) for quality evaluation. The buyer only needs to cover shipping costs. Request a sample through our sales department.Q: What is the minimum order quantity (MOQ)?
A: Our standard MOQ for Insulation Grade Aluminum Coil 3A21 is 3 tons per size. However, for first-time orders or small projects, we can negotiate a lower MOQ. Please contact us for details.Q: How long does delivery take?
A: For standard sizes and tempers, delivery is typically 15–20 days after order confirmation and payment. Custom specifications may require 25–30 days. We ship from major Chinese ports including Tianjin, Shanghai, Qingdao, and Ningbo.
Send Inquiry to This Supplier
You May Also Like
-
Weather Resistant Surface Treated Aluminum Coil Industrial Aluminum Roll for Outdoor Engineering ProjectsNegotiableMOQ: 100 Kilograms
-
Factory Direct Supply Aluminum Coil Different Width Temper Aluminum Coil for Global Industrial PurchasersNegotiableMOQ: 100 Kilograms
-
Aluminum Alloy Sheet Plate Coil for Curtain Wall Building Material ApplicationNegotiableMOQ: 100 Kilograms
-
ASTM Standard Industrial Aluminum Coil Multiple Series Alloy Aluminum Coil for General IndustryNegotiableMOQ: 100 Kilograms
-
DX51D DC01 Cold Rolled Hot Dipped Galvalume PVDF Color Coated Prepainted Steel Coil for Metal RoofNegotiableMOQ: 100 Kilograms
-
ASTM 6061 6063 3003 5052 Aluminum Anodized Embossed Color Coated Coil for RoofingNegotiableMOQ: 100 Kilograms
-
1050 1060 1100 3003 Psmb Aluminum Coil With Polysurlyn Film for Moisture BarrierNegotiableMOQ: 100 Kilograms
-
AA3105 White Color Coated Aluminum Trim Coil for Down Spout System ManufacturingNegotiableMOQ: 100 Kilograms
-
Supplier of Aluminum Coil Roll 1050 1060 1100 3003 3105 5052 Alloy for Industrial ApplicationsNegotiableMOQ: 100 Kilograms
-
Alloy 625 Seamless Welded Pipe Schedule 80 Round Square Rectangular Nickel-Based TubeUS$ 20 - 70MOQ: 100 Kilograms
