
Small Aluminum Scuba Diving Cylinder
| Specially designed for dive training schools, dive resorts, yacht suppliers and diving‑gear wholesale importers
Provide reliable and lightweight compressed‑air storage solutions for dive training schools, coastal dive resorts, yacht fleet suppliers, marine rescue teams and global diving‑gear wholesale importers. Solve the problems you face in scenarios such as diver practical training, on‑board emergency air backup and shallow‑water underwater inspection where stable breathable gas supply is critical. Holding ISO 7866 and DOT‑3AL international certifications, it supports bulk purchasing and OEM customization of cylinder colors, laser‑engraved corporate logos and export‑grade 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 | ||||
| MS-89-250-H-01 (0.9~2.3)L |
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 (2~4.5)L |
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 (4~11)L |
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 (5~12)L |
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 (2~21)L |
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.



Scene One: Dive Training School Daily Teaching
In dive training schools, traditional heavy steel diving cylinders bring high physical burden for beginner trainees. Frequent cylinder handling, transportation and refilling consume plenty of instructors' manpower. Multiple groups of students need lots of cylinders for practical courses, and steel cylinders are prone to seawater corrosion, raising maintenance and replacement costs. Midstar small aluminum diving scuba cylinder adopts aviation‑grade 6061‑T6 aluminum material, greatly cutting down overall weight for easy carrying by trainees. Light‑weight design lowers physical pressure for new divers during pool and open‑water practice. Excellent seawater corrosion resistance extends service life and cuts routine upkeep work. Unified dimension specifications simplify inventory management for training bases, and customized laser‑engraved logos help distinguish cylinders of different classes to avoid mixing‑up.
Scene Two: Coastal Dive Resort & Yacht Fleet Emergency Backup
At coastal dive resorts and private yacht fleets, divers may face unexpected underwater emergencies such as insufficient breathing gas during leisure diving. Conventional large scuba tanks are cumbersome for quick emergency deployment on small yachts and speedboats, with limited onboard storage space. Steel cylinders add extra load to vessels. Midstar small aluminum diving scuba cylinder features compact size and light weight, saving precious deck storage space on yachts. It serves as reliable emergency air supply for shallow‑water rescue and diver safety backup. Anti‑corrosion performance adapts to high‑salinity marine environment. It supports batch matching with yacht‑specific valve accessories. Bulk‑order packaging and pallet shipment simplify stock replenishment for resort and yacht‑chain operators.
Scene Three: Marine Rescue & Underwater Inspection Teams
For marine rescue teams and shallow‑water engineering inspection crews, staff need portable breathing gas equipment for short‑duration underwater assignments. Heavy steel cylinders impair diver mobility, hindering flexible movement in narrow waters. Corrosion from long‑term marine exposure increases hidden safety risks. Midstar small aluminum diving scuba cylinder is non‑magnetic and salt‑water resistant, fit for short‑term rescue missions and underwater equipment checking. Light‑weight structure improves diver maneuverability under water. Strictly tested under ISO 7866 and DOT‑3AL standards for dependable safety performance. Teams can customize cylinder marking, color and packaging for fleet asset tracking, convenient for centralized management of large‑quantity rescue‑use cylinder stocks.


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: Do you provide OEM Package ?
A: Yes , We can make your OEM package base on your quantity , We have technical department to take part in this information , If you can provide your logo to us , It will be more better.
Q: Before shipment , If you will test all goods in the good condition ?
A: Sure , We have some person in this position to test all of our goods before the shipment . We need to confirm that everything is 100% right to our customers .
Q: Can I use my own forwarder to transport the products for me?
A: Yes, if you have your own forwarder, you can let your forwarder ship the products for you. And then you will no need to pay the freight to us. We can also arrange shipment with our forwarder.
Q: What is the lead time?
A: For the first order, especially those with customized packages, it would take 50-60 days to complete the goods.
For reorders, however, it usually takes 30 days. Please keep it in mind the lead time is always flexable. Please feel free to drop a message when you need the goods urgently. We will do our best to meet your needs.












