If you're asking "how much oxygen does a scuba tank hold," the direct answer is: a standard Aluminum 80 (AL80) tank holds 80 cubic feet of compressed gas at a working pressure of 3,000 PSI. However, for B2B buyers—import managers, brand owners, and sourcing agents—the real question is about specification accuracy, compliance safety, and supply chain reliability. Whether you are sourcing pure diving oxygen tanks for technical diving or medical applications, understanding cylinder sizing, material certification (ISO/DOT), and factory qualifications is critical. At Zhuzhou XingYe Chemical, we bridge the gap between high-performance gas products and global procurement demands.

Scuba Tank Capacity: What Does "80 Cubic Feet" Really Mean?

The capacity of a scuba tank depends on three factors: internal water volume, working pressure, and gas type. While common language uses “oxygen,” most recreational diving uses compressed air (21% O₂) or Nitrox (up to 40% O₂). Pure oxygen requires specialized, ultra-clean cylinders (ASTM G93) and is reserved for decompression stops or medical use.

For import managers, the key is matching tank specs to your target market's regulatory environment. Below is a standard reference table for the most commonly sourced cylinders in the USA market.

Note: Specifications are for reference only. Final cylinder volume may vary based on valve type, neck configuration, and manufacturing tolerances. Always refer to the approved engineering drawing for your order.

Critical Compliance for the USA Market (DOT / ISO 9809)

For buyers importing into the USA, certification isn't optional—it's a legal requirement. Scuba cylinders must conform to DOT (Department of Transportation) or TC (Transport Canada) standards. Additionally, if you are importing pure diving oxygen tanks, the cylinders must be "O₂ Cleaned" according to ASTM G93 standards to prevent combustion.

At Zhuzhou XingYe Chemical, every cylinder batch is accompanied by:

• Certificate of Analysis (COA) for gas purity.
• Material Safety Data Sheet (MSDS).
• ECM (European Conformity) and ISO 9001 quality management documentation.
• DOT/TC specification stamp on cylinder shoulder (upon request).

B2B Sourcing Guide: MOQ, OEM & Logistics (2026)

Minimum Order Quantities (MOQ) & Customization

We understand that inventory management is critical for distributors. Our flexible MOQ structure allows you to test the market without overcommitting capital.

• Standard Cylinders (AL40 / AL80): MOQ from 100 units.
• OEM/ODM Branding: MOQ from 300 units (custom logo, label, and packaging).
• Custom Valve Configurations: Choose between K-valve (yoke), DIN valve, or M26 x 2 threaded options.

Our OEM/ODM Design service includes custom cylinder coloring, branded neck rings, and multilingual labeling to match your retail or wholesale brand identity.

Lead Time & Delivery (CIF / FOB)

Based on our factory capacity in Zhuzhou, Hunan, standard production runs 15–20 working days. For fully customized orders (OEM/ODM), lead time extends to 25–35 working days. We ship via FOB Shanghai/Ningbo or CIF to major USA ports (Los Angeles, Long Beach, Houston).

Why Partner with Zhuzhou XingYe Chemical? (Factory Strength)

With over 10 years of expertise in specialty gases, our factory integrates R&D, production, and after-sales service. We don't just manufacture cylinders; we engineer gas solutions. Our product line includes N₂O Cream Chargers, Food & Beverage Grade CO₂, Industrial Argon, and, of course, Diving Oxygen.

Our production facility in Zhuzhou, Hunan

Cylinder valve assembly and pressure testing line

Finished goods inventory ready for global shipping

Key Factory Certifications & Capabilities

• ✅ ISO 9001 Certified Quality Management System.
• ✅ COA, MSDS, ECM for full traceability.
• ✅ Food-Grade Gas Certification (relevant for N₂O and CO₂).
• ✅ High-Pressure Steel Cylinder manufacturing (DOT/ISO 9809).
• ✅ R&D Innovation – Custom valve designs, mixed gas blending, and specialized purity levels.

Trusted by Global Brands: Real Feedback from US Buyers

James T.

Import Manager, East Coast Marine Supply

"We switched to Zhuzhou XingYe for our OEM diving oxygen tanks. The DOT compliance documentation was perfect, and the AL80 cylinders we received matched the sample quality exactly. Lead times were consistent with their promises."

Sarah L.

Brand Owner, DeepBlue Gear LLC

"As a brand owner, I was skeptical about sourcing from a new factory. But their OEM team handled our custom logo, custom valve specs, and unique packaging with zero errors. The pricing and quality are unmatched."

Mike R.

Sourcing Agent, Horizon Supply Chain

"I've sourced gas cylinders from multiple Chinese manufacturers over the past 5 years. Zhuzhou XingYe stands out for their technical knowledge. They advised us on the correct O₂ cleaning standards for our medical diving clients, which saved us from a major compliance issue."

Frequently Asked Questions (Technical Sourcing)

Ready to Source Reliable Diving Oxygen Tanks?

Contact our sales team today for a customized quote, sample request, or factory tour.