
Empty Oxygen Cylinder
| Specially designed for medical gas filling enterprises, medical equipment kit assemblers, cross‑border medical goods wholesalers and emergency medical solution providers
Provide corrosion‑resistant lightweight empty medical oxygen vessel solutions for medical gas filling enterprises, medical equipment kit assemblers, cross‑border medical goods wholesalers and emergency medical solution providers. Solve the problems you face in scenarios such as finished medical oxygen kit assembly, circulating cylinder fleet operation and cross‑border medical hardware distribution where stable pressure containment and inner‑wall cleanliness are critical. Holding ISO 7866 and DOT‑3AL international certifications, it supports bulk purchasing and OEM customization of cylinder colors, enterprise serial markings and export‑oriented 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-111-232-H-01 (2.73~5.07)L |
111 | 4.37 | 2.73 | 6.02 | 420 | 16.5 | 2.5 | 5.5 | 139/2015 | 232/3364 | DOT-3AL |
| 3.9 | 8.6 | 570 | 22.4 | 3.3 | 7.3 | ||||||
| 5.07 | 11.18 | 720 | 28.3 | 4 | 8.8 | ||||||
Material: High-quality aluminum alloy 6061-T6
Stamp markings: According to standards, additional markings are available upon request;
Surface treatment: brushed body with clear powder coating and green neck;
Threads: M25x2, 3/4-16UNF-2B, 25E, other threads available on request;
Valve: CGA 870
Other Customization Options: Logos, Graphics, Packaging, Accessories (Nasal Cannula, Mini Oxygen Regulators);


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 empty oxygen cylinder
Scene One: Medical Gas Filling Plant Cyclic Cylinder Fleet Management
Medical gas filling operators maintain large circulating fleets of empty vessels to supply downstream medical clients. Conventional steel cylinders bring high labour and logistics costs during repeated sorting, filling and outbound shipment. Rust build‑up on inner walls may contaminate medical‑grade oxygen and trigger extra rejection during quality inspection. Midstar empty oxygen cylinder adopts seamless 6061‑T6 aviation‑grade aluminum alloy with anti‑corrosion interior treatment to avoid rust‑caused gas contamination. Unified dimensional specifications simplify batch hydrostatic testing and fleet asset counting. Custom engraved serial numbers facilitate full‑lifecycle traceability for large‑scale cylinder circulation.
Scene Two: Medical Equipment Assembler Finished Oxygen Kit Production
Medical equipment assemblers need qualified empty vessels to match regulators, masks and trolleys for complete medical oxygen kit output. Heavy steel tanks raise total package weight and push up cross‑border freight expense. Non‑standard cylinder thread dimensions will cause compatibility obstacles when assembling supporting medical accessories. Midstar empty oxygen cylinder keeps consistent thread interface dimensions to fit mainstream medical regulators and auxiliary parts. Uniform surface finish reserves good conditions for subsequent spraying and logo marking. Stable batch‑to‑batch consistency helps assemblers reduce product rework rate for B‑order kit projects.
Scene Three: Cross‑border Medical Wholesaler Emergency Medical Hardware Supply
Cross‑border medical wholesalers stock empty oxygen cylinders to fulfil scattered orders from clinics, emergency service contractors and home‑medical merchants across multiple regions. Steel‑made counterparts are hard to stack and occupy excessive container space in sea freight. Complicated surface conditions limit available customisation options for local market branding demands. Midstar empty oxygen cylinder features compact stack‑friendly outer dimensions to optimise container loading volume for ocean shipments. Clean cylinder surface supports custom colour painting and brand marking to match regional medical market requirements. Flexible‑MOQ policy helps wholesalers conduct market trial stocking before scaling‑up bulk procurement for overseas B‑end clients.

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: Can you produce customized product?
A: Yes. The size, color, logo, surface treatment of bottle could be customized according to your personalized requirements. Moreover, the bottle shape also could be customized.
Q: How do you control the quality?
A: We do leak test for 3 times before packing: We check finished bottles 100% one by one, in order to make sure they are all what you order, the quantity and in good condition. We send you mass production pictures for your confirmation before shipping.
Q: Can you make a new molding?
A: Yes, sure! We are a professional aluminum gas cylinder manufacturer.
Q: How about your service?
A: 1).Any Inquiries will be replied within 24 hours.
2).Professional manufacturer, quality issue, competitive price.
3).All products will be strictly quality checked and well-packed before shipping.
4).If you have any question. Please feel free to contact me at any time.












