Aluminum Cylinder

Norm

DOT 3AL

Overview

Water Capacity: 2.9 - 4.6 L

Diameter: 111 mm (4.37 in)

Height: 436 mm / 658 mm (17.17 in / 25.9 in)

Min. Wall Thickness: 5 mm (0.2 in)

Working Pressure: 13.9 MPa (2015 psi)

Test Pressure: 23.2 MPa (3364 psi)

Material: AA6061 Aluminum Alloy

Description

Our DOT-3AL Seamless Aluminum Cylinders provide lightweight, corrosion-resistant storage for medical and specialty gases. Built from high-strength AA6061 aluminum and tested under DOT-3AL standards, they ensure consistent performance, precision tolerances, and exceptional durability.

Ideal for medical oxygen, calibration gases, and portable or high-mobility applications, these cylinders combine safety, reliability, and convenience.
Fast & Reliable Delivery
We guarantee delivery times below 40 days, helping you maintain supply continuity while competitors often take much longer
Certified Quality Assurance
All our cylinders comply with strict ISO, DOT, and TPED standards, backed by TÜV and Bureau Veritas certifications.
Complete Product Range
We offer comprehensive cylinder lines in the industry, serving both medicinal and industrial gas needs.
Help & Support

Frequently Asked Questions

If you don’t see your question here, we’re always available to help. Get in touch to discuss your needs, explore opportunities, or clarify how we work.

What is the main advantage of aluminum cylinders compared to steel cylinders?

Aluminum cylinders are significantly lighter while maintaining high strength and safety. They also offer superior corrosion resistance, making them ideal for medical and portable applications where weight and cleanliness matter.

What gases can be stored in DOT-3AL aluminum cylinders?

They are suitable for medical oxygen, industrial oxygen, calibration gases, nitrogen, argon, and other non-corrosive gases. For specific compatibility, always refer to gas supplier or safety data sheet (SDS) recommendations.

Are these cylinders certified for international use?

Yes. Our cylinders are manufactured and tested under DOT-3AL standards and accepted in multiple international markets. Additional certifications (ISO, TPED, EN) can be provided depending on destination and local regulations.

What is the typical lifespan of an aluminum cylinder?

With proper handling and periodic testing, DOT-3AL aluminum cylinders can last over 15–20 years. Re-qualification and hydrostatic testing intervals follow DOT or local authority guidelines, typically every 5 years.

Can aluminum cylinders be refilled or reused?

Yes. They are designed for multiple filling cycles and long-term reuse, provided they pass regular inspections and are serviced by certified facilities.

What sizes are available for this model?

Currently available in 2.9 L (MD) and 4.6 L (ME) water capacities. Custom volumes and valve configurations can be supplied upon request.

Do the cylinders come with valves or accessories?

Cylinders can be supplied with or without valves depending on client requirements. We offer compatible Harrison, CGA, and DIN valve types for both medical and industrial applications.

What is the typical lead time for orders?

Standard production and delivery are completed within 35–40 days, depending on order volume and configuration.

How should aluminum cylinders be maintained?

Keep cylinders clean, dry, and protected from physical impact. Avoid contact with oils or hydrocarbons in oxygen service. Follow standard DOT/ISO maintenance and re-inspection procedures.