Gas Cylinders
High-pressure cylinders manufactured in house to DOT, CE and TPED — from 8g chargers to 60L industrial formats.
Where the business started
A pressure vessel
has one job.
Hold what is inside it, every time, for years. Everything else — the coating, the label, the price — is secondary to that, and a cylinder that fails does not fail quietly.
Hyfine manufactures high-pressure cylinders in carbon steel and stainless steel under an ISO production system. Every unit is pressure, leak and safety tested before dispatch, and built to the certification the destination market requires rather than the one that is cheapest to obtain.
REQUEST A SPECIFICATION
Cylinder ranges
CO₂ Cylinder Series
Suitable for: Beverage machines, sparkling water systems, welding, outdoor equipment
8g / 12g / 16g threaded chargers, retail packable
425g / 60L household and commercial carbonation formats
2kg / 5kg / 10kg for café, bar and post-mix dispense
Food grade, purity 99.9% or better, valve to specification
Helium Cylinder Series
Suitable for: Leak detection, food packaging, metal processing, inflatable decoration
High-purity helium, colourless, inert and non-corrosive
Disposable and refillable formats for trade and retail use
Purity controlled and batch tested before filling
Widely used in industrial manufacturing and scientific research
Industrial Gas Cylinders
Suitable for: Welding, machining, laboratories, gas distribution
O₂ / N₂ / Ar / CO₂ industrial formats
Pressure ratings from 150Bar to 300Bar
Carbon steel or stainless steel to application
Valve, guard and neck ring specified to the destination standard
Medical Grade Cylinders
Suitable for: Portable oxygen, respirators, emergency and care settings
Compatible with standard medical valve fittings
Medical-grade cleaning and sterilisation treatment
Lightweight portable formats for mobile and home use
Documentation prepared for medical device import requirements
Certified For Where It Lands.
DOT, CE, TPED, ISO.
A cylinder certified for one market is not automatically clearable in another. We build to the standard your destination enforces — DOT for North America, CE and TPED for Europe, with production under an ISO manufacturing system throughout.
Every unit is pressure, leak and safety tested before dispatch, and shipped with the test records and certification the port will ask for. Where a market needs an approval we do not already hold, we say so at quotation rather than at the border.
CONFIRM YOUR MARKET
Formats at a glance
| Format | Gas | Typical use | Notes |
|---|---|---|---|
| 8g / 12g / 16g | CO₂ | Single-serve and portable carbonation | Threaded chargers, retail packable |
| 425g | CO₂ | Household and countertop sparkling water | Refillable, standard consumer thread |
| 2kg / 5kg | CO₂ | Café and small bar dispense | Steel or stainless, valve to specification |
| 10kg / 60L | CO₂ | High-volume bar, hotel and post-mix | Rated 150Bar to 300Bar |
| Disposable / refillable | Helium | Leak detection, packaging, decoration | Purity controlled and batch tested |
| Various | O₂ / N₂ / Ar | Welding, machining, laboratory | 150Bar to 300Bar, valve to destination standard |
| Portable | Medical O₂ | Respirators, emergency and home care | Medical-grade cleaning, standard valve fittings |
Capacities, coatings and valve types outside this list are quoted to brief. Pressure, leak and safety testing is carried out on every unit before dispatch.
OEM and ODM
Brand owners, wholesalers and cross-border sellers use our production line under their own name. Tooling and approved specifications are held on file, so a repeat order does not repeat the setup.
DISCUSS A CUSTOM RUN
- Capacity and dimensions built to your specification
- Exterior coating and colour to your brand
- Logo printing, labelling and multilingual safety marking
- Valve, thread and connector matched to your market or appliance
- Retail packaging, cartoning and barcoding
- Export documentation prepared with the shipment
Who buys it
- Gas distributors and refillers
- Beverage equipment manufacturers
- Appliance brand owners and importers
- Bars, hotels and hospitality groups
- Welding and engineering suppliers
- Laboratories and research facilities
- Medical and care equipment suppliers
- Wholesalers and distributors
- Cross-border e-commerce sellers
Consultation
Format, gas, pressure rating and destination market confirmed before anything is quoted.
Sampling
Samples before production on custom runs. Approved specifications are held on file.
Testing
Pressure, leak and safety tested on every unit, with test records shipped alongside.
Shipping
FOB Hong Kong or Shenzhen as standard. CIF and door delivery by arrangement.
Where Quality Meets Pressure.
Tell us the format and the market.
Gas, capacity, pressure rating, valve type, quantity per order and destination port. If the cylinders feed beverage equipment, say so and we will quote the machines with them.