High‑Pressure Aluminum Scuba Tank
| Specially designed for dive schools, coastal dive resorts, yacht fleets and diving equipment wholesalers
Provide reliable, salt‑resistant lightweight air‑storage solutions for dive training schools, coastal dive resorts, yacht fleets, marine rescue teams and global diving‑gear wholesalers. Solve the pain‑points you encounter in high‑humidity salt‑spray operating environments, group training deployment, fleet equipment configuration and cross‑border bulk inventory management. Holding ISO 7866 and DOT‑3AL international certifications, it supports bulk purchasing and OEM customization of cylinder coating colors, laser‑engraved brand 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 | bar/psi | bar/psi | ||
| MS-111-300-H- 01 (2～4.5)L |
111 | 4.37 | 2 | 4.41 | 359 | 14.13 | 2.8 | 6.17 | 200/2900 | 300/4350 | PED |
| 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 | ||||||
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: Chain Diving Training Schools & PADI Certification Institutions
Traditional steel diving cylinders are extremely heavy, doubling instructors' physical burden during group pool training. Steel tanks easily generate internal rust after repeated filling, contaminating compressed air and triggering diver throat discomfort. Mixed tank specifications lead to messy warehouse inventory, and unmarked cylinders cannot be assigned to different training batches, causing frequent equipment loss. Fragmented small retail orders take up production capacity and cut institutional overall profit margins. Midstar high-pressure scuba tank adopts aviation-grade 6061-T6 aluminum alloy, 30% lighter than steel tanks, so instructors can transport multiple tanks effortlessly for group courses. Smooth anti-corrosion inner wall prevents rust pollution, guaranteeing clean breathing air for trainees. Unified standard sizes simplify batch stock management across multi-campus training chains. Custom exclusive colors and institutional laser logos realize rapid asset classification for different classes, perfectly matching large-scale bulk procurement needs of diving training groups.
Scene Two: Coastal Resort Dive Shops & Luxury Yacht Fleets
Seaside diving facilities operate in high-salinity marine environments. Steel cylinders suffer severe pitting corrosion, requiring regular internal cleaning, repainting and frequent hydrostatic testing, which pushes up annual operation costs. Heavy steel tanks occupy limited storage space on yachts and increase vessel load and fuel consumption. Uncertified steel cylinders cannot pass marine safety supervision audits, delaying daily tourist diving projects. Scattered individual diver orders consume store manpower and reduce service efficiency. Midstar seamless aluminum cylinder forms a natural anti-rust oxide film in saltwater, extending maintenance cycles and cutting long-term operating expenses for resort operators. Its lightweight structure saves cabin storage space and lowers yacht transportation costs. Complete ISO 7866 and DOT international certifications fully meet global marine inspection standards to ensure uninterrupted diving services. Bulk OEM color customization unifies the resort's brand image, supporting full-container bulk delivery for multi-villa, multi-yacht resort groups.
Scene Three: Global Diving Gear Wholesalers & Marine Rescue Teams
Steel diving cylinders carry excessive dead weight, sharply raising sea freight costs for cross-border full-container shipments. Inconsistent valve threads force distributors to stock multiple matched regulators, increasing spare part inventory pressure. Rust leakage problems trigger frequent overseas returns and damage brand credibility. Blank unbranded steel tanks cannot launch differentiated private-label products for B-end institutional clients. Marine rescue teams need lightweight portable tanks for rapid offshore emergency deployment, while bulky steel tanks slow down rescue response. Midstar high-pressure aluminum scuba tank is equipped with complete global certification documents for smooth customs clearance in major diving markets worldwide. Standardized valve interfaces reduce spare part stocking pressure for wholesalers, and lightweight construction slashes comprehensive logistics costs for bulk export orders. Full OEM customization covers tank coating colors, engraved distributor trademarks and export shockproof pallet packaging. Wholesalers can focus resources on high-value long-term bulk orders from dive chains, coastal resorts and marine rescue teams, instead of wasting manpower on low-margin fragmented retail orders.
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: Does the knob turn easily? Does the valve work? Or does it jam up?
A: Again, this could mean some corrosion occurred in the knob itself or your valve has gone bad. A likely result of improper storage.
Q: When was the cylinder hydro-tested last?
A: Again, not a huge cost, but it needs to be done once every 5 years. A combo visual inspection and hydro-test can cost between $30 and $40.
If you find a used scuba tank for sale with a fresh hydro-test, that's a good find.
Q: What is a Diving Cylinder or Diving Tank?
A: A diving tank, often known as a "diving cylinder" or "scuba tank," is a container that holds compressed, purified air. These tanks typically contain 20.9% oxygen, not 100% as many people believe. When you are deeper beyond 20 feet, which is a standard depth for a cave diver, pure oxygen becomes deadly. At this level, breathing 100% oxygen causes central nervous system oxygen poisoning, which is fatal.
