Scuba Diving Tank Aluminum Air Cylinder
| Specially designed for diving‑gear OEM manufacturers, diving kit assemblers and commercial dive rental operators
Provide reliable and lightweight main underwater air storage solutions for diving‑gear OEM manufacturers, finished diving‑kit assemblers, commercial dive rental operators and global diving‑equipment wholesale importers. Solve the problems you face in scenarios such as mass diving kit assembly, large dive fleet operation and multi‑site diving venue deployment where seawater corrosion resistance and stable long‑duration breathing air supply are critical. Holding ISO 7866 and DOT‑3AL international certifications, it supports bulk purchasing and OEM customization of cylinder colors, enterprise logos and packaging.
Safety and Compliance
Each gas cylinder undergoes 100% water pressure testing, ultrasonic flaw detection and air tightness testing, and is accompanied by a traceable third-party certification report to ensure absolute safety.
Lightweight design
Compared with traditional gas cylinders, the weight is reduced by 30% to 40%, significantly lowering logistics costs and the operational load on workers.
Deep customization service
Supports OEM/ODM based on your filling gas, production line interface, and brand logo, including all-round customization in color, valves, size and packaging.
One-stop support
We offer full-cycle services ranging from technical selection consultation, compliance guidance to after-sales maintenance. Our professional engineering team is your strong backing.

| Drawing No. | Outside Diameter | Water Capacity | Length | Weight | Service Pressure | Test Pressure | Specification | ||||
| mm | in | liters | lbs | mm | in | kgs | lbs | bar/psi | bar/psi | ||
| MS-89-300-H-01(0.9~2.3L) | 89 | 3.5 | 0.9 | 1.98 | 268 | 10.55 | 1.2 | 2.65 | 200/2900 | 300/4350 | PED |
| 1.5 | 3.31 | 373 | 14.69 | 1.6 | 3.53 | ||||||
| 2.3 | 5.07 | 559 | 22.01 | 2.3 | 5.07 | ||||||
| MS-111-300-H-01(2~4.5L) | 111 | 4.37 | 2 | 4.41 | 359 | 14.13 | 2.8 | 6.17 | |||
| 3 | 6.61 | 500 | 19.69 | 3.77 | 8.31 | ||||||
| 4 | 8.82 | 640 | 25.2 | 4.27 | 9.41 | ||||||
| 4.5 | 9.92 | 708 | 27.87 | 4.74 | 10.45 | ||||||
| MS-140-300-H-01(4~11L) | 140 | 5.51 | 4 | 8.82 | 453 | 17.83 | 5.59 | 12.32 | |||
| 5 | 11.02 | 541 | 21.3 | 6.54 | 14.42 | ||||||
| 5.7 | 12.57 | 603 | 23.74 | 7.2 | 15.87 | ||||||
| 7 | 15.43 | 716 | 28.19 | 8.43 | 18.58 | ||||||
| 10 | 22.05 | 980 | 38.58 | 11.29 | 24.89 | ||||||
| 11 | 24.25 | 1068 | 42.05 | 12.24 | 26.98 | ||||||
| MS-152-300-H-01(5~12L) | 152 | 5.98 | 5 | 11.02 | 481 | 18.94 | 7.17 | 15.81 | |||
| 6 | 13.23 | 555 | 21.85 | 8.12 | 17.9 | ||||||
| 8 | 17.64 | 704 | 27.72 | 10.01 | 22.07 | ||||||
| 10 | 22.05 | 853 | 33.58 | 11.9 | 26.24 | ||||||
| 12 | 26.46 | 1002 | 39.45 | 13.79 | 30.4 | ||||||
| MS-203-300-H-01(2~21L) | 203 | 7.99 | 12 | 26.46 | 613 | 24.13 | 16.06 | 35.41 | |||
| 13.4 | 29.54 | 671 | 26.42 | 17.32 | 38.18 | ||||||
| 16 | 35.27 | 778 | 30.63 | 19.71 | 43.45 | ||||||
| 18 | 39.68 | 861 | 33.9 | 21.54 | 47.49 | ||||||
| 20 | 44.09 | 944 | 37.17 | 23.37 | 51.52 | ||||||
| 21 | 46.3 | 985 | 38.78 | 24.29 | 53.55 | ||||||
OEM/ODM customization capability - integrating products into your brand and system
Our customized services cover four major dimensions
• Customized specifications: Volume, diameter, height, valve opening type - within the safety standard range, adjust as needed
• Customized appearance: Bottle body color, shoulder color matching, enterprise LOGO, product label - Let the gas cylinder become your mobile billboard
• Customized identification: Laser engraving, screen printing, permanent coding - achieving full life cycle traceability management
• Customized packaging: Exclusive packaging solutions, pallet specifications, and shipping mark designs - tailored to your warehousing and logistics systems
From sample confirmation to batch delivery, we offer one-on-one dedicated account manager coordination to ensure that every customized detail is precisely implemented.



Three major application scenarios for Scuba Diving Tank Aluminum Air Cylinder
Scene One: Commercial Dive Fleet & Rental Station Batch Operation
Traditional steel scuba cylinders adopted by dive rental fleets are bulky and heavy, requiring massive labor for daily handling, boat loading and storage. Long-term exposure to humid marine environments easily causes surface rust and internal corrosion, leading to frequent pressure testing, maintenance and high replacement costs. Mixed cylinder specifications and unmarked equipment bring huge obstacles for unified asset counting, safety inspection and standardized fleet management for commercial diving operators. Midstar aluminum scuba air cylinder adopts 6061-T6 aviation-grade seamless aluminum structure, 40% lighter than traditional steel tanks to greatly reduce labor handling pressure. It features excellent salt-fog and corrosion resistance, adapting to long-term cyclic marine use and cutting long-term fleet maintenance costs significantly. Unified industrial specifications support unified equipment allocation and batch safety audits across multiple diving venues. Custom enterprise logos and unified color spraying help B-end rental stations achieve standardized asset management and brand unification for large-scale diving fleets.
Scene Two: Diving Equipment OEM & Complete Diving Kit Supporting Production
For diving equipment OEM manufacturers and finished kit producers, traditional steel diving cylinders have excessive overall weight, which increases container shipping costs for bulk export orders. Non-standard tank sizes and irregular interfaces hinder automated assembly and standardized packaging production. Single and undifferentiated appearance cannot meet customized product line layout and brand differentiation needs for global B-end distributors. Midstar scuba diving aluminum cylinder complies with ISO 7866 and DOT-3AL international certification standards, with stable high-pressure performance and extreme temperature adaptability for global marine scenario applications. The lightweight integrated aluminum body effectively reduces container loading weight and lowers bulk export logistics costs. Standard unified valve interfaces and overall dimensions perfectly match automated assembly lines and supporting accessory kits. It supports customized color painting, brand engraving and exclusive export packaging, helping OEM factories launch standardized, high-quality finished diving kits to enhance global market competitiveness.
Scene Three: Yacht & Marine Vessel Standard Safety Configuration
For yacht management companies and commercial marine vessels, traditional heavy steel diving tanks occupy valuable cabin storage space and cannot support rapid emergency deployment. Rust-prone steel cylinders have short service life and cannot meet long-term ship safety compliance requirements. Disordered safety equipment increases the difficulty of vessel safety filing and regular department inspection. Midstar lightweight aluminum scuba cylinder features compact structure and small footprint, convenient for fixed cabin storage and rapid emergency shallow-water operation. The all-aluminum rust-proof structure avoids corrosion failure in high-humidity marine cabin environments and meets long-term maritime safety standards. Each cylinder undergoes strict factory hydrostatic and airtight testing to ensure compliance with commercial vessel safety regulations. Batch customized coding and unified batch packaging facilitate centralized equipment management, regular safety testing and unified safety configuration for multi-vessel marine fleets.



Full-process support from concept to mass production: From drawing review, prototype making to mass production and quality inspection, we offer one-stop services, significantly shortening your product launch cycle.
Flexible cooperation based on demand: Whether it's a small-batch trial order or a long-term large-scale framework purchase, we can offer competitive tiered pricing and stable inventory planning.
Cross-industry application expert: Our gas cylinder solutions have been successfully applied in fire-fighting equipment, medical devices, diving equipment and the beverage industry. We are glad to apply our cross-industry experience to solve your specific challenges.

Regarding packaging
In order to deliver our products to you in the condition in which they were sent, we use strict, strong, efficient and environmentally friendly packaging methods.
Our standard packaging method for our products is to cover them with plastic bags, put them into cartons, then place the cartons on pallets and wrap them tightly with stretch film to ensure that the cylinders do not collide with each other during transportation. Other packaging methods can be provided upon request.

Certification system of Midstar
• U.S. market: DOT-3AL (U.S. Department of Transportation Standard for Aluminum Alloy Gas Cylinders)
• EU market: TPED /EU + PED /EU (Dual Directive compliance)
• International standard: ISO 7866 (Global Technical Benchmark for Gas Cylinder Industry)
• UK market: BS 5045-8 (UK National Standard)
• Chinese market: GB/T 11640 (National Recommended Standard of China)
All certifications are reviewed and issued by international authoritative institutions to ensure the authenticity and traceability of compliance documents.


Professional service commitment
We offer comprehensive support, not just products.
Bulk purchasing plan: Based on your annual purchasing volume, we offer tiered preferential prices and flexible delivery plans.
Customized services: Supports institutional customization of gas cylinder colors and markings, facilitating asset identification and management.
Training and Guidance: Provide training on product usage and safety regulations for your team.
After-sales service and Inspection: We offer regular safety inspection services for gas cylinders or assist in contacting qualified local inspection institutions.

Call to action
To the Procurement Managers of Institutions, if you are evaluating or updating equipment, we can provide you with:
Free sample experience: Test the lightness and reliability of the product in person.
Contact our B2B sales team immediately to get a personalized quotation and solution.
FAQs
Q:What is the main material of your gas cylinder?
A:Our cylinders are mainly aluminum cylinders . Aluminum cylinders are made of 6061 aluminum.
Q:What is the working pressure of your gas cylinder?
A:Different types of cylinders have different pressures. Our cylinder pressure range is 150bar to 300bar
Q: Can I print our own logo on package?
A: Sure! Customized package and OEM printing are available.
Q: What's the payment terms?
A: Payment<=10,000USD, 100% in advance. Payment>10,000USD, 40% T/T in advance ,balance before delivery.












