Large-Capacity Hydrogen Gas Cylinder: Technical B2B Product Page
High-Pressure Hydrogen Storage Solutions for Industrial & Mobility Infrastructure
Engineered for stationary storage cascades, mobile tube trailers, and heavy-duty fuel cell commercial vehicles, these high-capacity composite cylinders deliver high gravimetric efficiency while maintaining strict compliance with international pressure vessel codes. Built using automated filament winding and polymer/aluminum liner technologies, each unit is manufactured to withstand rigorous cyclic fatigue and extreme operating environments.
Technical Specifications & Model Matrix
All specifications reflect standard production configurations. Custom dimensions and port configurations available for OEM integration.
|
Model Designation |
Working Pressure (MPa) |
Test Pressure (MPa) |
Water Capacity (L) |
Outer Diameter (mm) |
Length (mm) |
Empty Weight (kg) |
Liner Material |
Fiber Type |
|
HC-350-320 |
35 |
52.5 |
320 |
520 |
2150 |
145 |
HDPE (Type IV) |
Toray T700 |
|
HC-350-450 |
35 |
52.5 |
450 |
600 |
2300 |
192 |
HDPE (Type IV) |
Toray T700 |
|
HC-700-175 |
70 |
105.0 |
175 |
520 |
1680 |
110 |
HDPE (Type IV) |
Toray T800 |
|
HC-700-250 |
70 |
105.0 |
250 |
520 |
2250 |
148 |
HDPE (Type IV) |
Toray T800 |
|
AL-350-300 |
35 |
52.5 |
300 |
500 |
2200 |
210 |
Al 6061 (Type III) |
Toray T700 |
Material & Manufacturing Process
Reliability in high-pressure hydrogen service depends strictly on raw material selection and process control.
Liner Construction (Type IV / Type III): Type IV liners utilize high-density polyethylene (HDPE) formulated for near-zero hydrogen permeation rates (less than 1.5 Ncm3/hr/L). Type III variants use seamless Al 6061-T6 aluminum extrusion, minimizing wall thickness and maximizing corrosion resistance.
Carbon Fiber Filament Winding: Multi-axis CNC computerized winding machines apply high-strength carbon fiber roving (Toray T700/T800) impregnated with toughened epoxy resin. Hoop and helical winding angles are optimized via finite element analysis (FEA) to distribute stress evenly across high-stress zones.
Autoclave Curing: Cylinders undergo programmed thermal curing in precision-controlled industrial ovens to eliminate micro-voids in the resin matrix and ensure uniform interlaminar shear strength.
Boss Integration: High-strength stainless steel (316L) or forged aluminum end bosses feature precision-machined threads (UNF, M-thread, or custom per ISO/SAE standards) to guarantee leak-tight interface integrity under fluctuating thermal and mechanical loads.
Quality Control, Testing & Certification
Every production batch undergoes destructive and non-destructive testing regimes required by global regulatory bodies.
Hydrostatic Pressure Testing: Each cylinder is pressurized to 1.5 times the working pressure to verify structural elasticity and zero permanent volumetric expansion beyond acceptable tolerances.
Hydraulic Burst Testing: Statistical batch samples undergo pressurization until structural failure occurs, confirming burst safety margins exceed specified minimums (greater than 2.25x for industrial, greater than 2.35x for transport).
Ambient & Accelerated Stress Rupture (ASR): Samples are subjected to sustained load testing at elevated temperatures to verify long-term creep resistance of the composite overwrap.
Cycle Fatigue Testing: Cylinders undergo hydraulic pressure cycling from zero to working pressure for over 11,000 to 22,000 cycles without structural failure or leakage.
Permeation & Leak Testing: Helium mass spectrometer testing is executed post-assembly to detect micro-leaks at the liner-to-boss interface.
Compliance Standards:
ISO 11119-3 (Non-metallic and composite gas cylinders)
UN ECE R134 (Hydrogen fuel cell vehicle regulation)
ASME Section X (Composite pressure vessels)
TPED (Transportable Pressure Equipment Directive)
Application Scenarios & Engineering Fit
Hydrogen Refueling Stations (HRS): Applied in modular high-, medium-, and low-pressure storage cascades. The high water capacity-to-weight ratio reduces concrete pad footprint requirements and lowers structural reinforcement costs on-site.
Commercial FCEVs (Heavy-Duty Trucks & Buses): Mounted in rooftop or chassis-rail cradles. The optimized carbon fiber distribution reduces tare weight, directly increasing payload capacity for commercial fleet operators.
Mobile Tube Trailers & Gas Transport Skids: Utilized for over-the-road transport of compressed hydrogen gas, replacing heavy steel cylinders to maximize mass delivery efficiency per transit run.
Supplier Evaluation & Factory Verification Guide
When qualifying manufacturing partners for large-scale hydrogen infrastructure projects, engineering teams should evaluate:
Winding Equipment Precision: Verify that suppliers utilize multi-axis CNC tension-controlled winding machinery capable of maintaining consistent fiber tension to prevent localized stress concentration.
Liner Extrusion & Rotational Molding Control: Inspect wall thickness uniformity reports for polymeric liners to ensure consistent permeation barriers.
Traceability Systems: Confirm that raw material batch numbers (carbon fiber spools, resin lots, aluminum/HDPE feedstock) are permanently laser-etched and logged against individual cylinder serial numbers.
In-House Testing Capability: Ensure the facility maintains hydrostatic burst pits, hydraulic cycle test benches, and helium leak-detection chambers on-site rather than relying entirely on third-party labs for routine batch sign-off.
Frequently Asked Questions
Q: What is the primary difference between Type III and Type IV cylinders for hydrogen storage?
A: Type III cylinders utilize a seamless metal (aluminum) liner wrapped in carbon fiber, whereas Type IV cylinders use a polymer (HDPE) liner. Type IV offers significantly lower tare weight and higher gravimetric hydrogen storage efficiency, making it the preferred choice for mobile applications and high-pressure vehicle integration.
Q: What is the specified design life and recertification interval?
A: Standard design life is established at 15 to 20 years depending on the operating profile. Recertification intervals and regulatory inspection requirements depend on regional jurisdictions (e.g., DOT, TPED, or local statutory pressure vessel inspection acts), typically requiring visual inspection and re-qualification every 3 to 5 years.
Q: Can port threads and boss configurations be customized for proprietary manifold systems?
A: Yes. End bosses can be custom-machined from 316L stainless steel or specialized alloys to accommodate specific valve interfaces, thermal pressure relief devices (TPRD), and quick-disconnect fittings per project engineering drawings.
Q: What minimum order quantities (MOQ) apply for custom dimensions or operating pressures?
A: For standard catalog configurations (350 bar / 700 bar), pilot orders starting from 5 to 10 units are supported for engineering evaluation and prototype testing. Volume manufacturing schedules are established based on annual framework agreements.
Request a Technical Data Sheet (TDS) or Engineering Quotation
To obtain detailed CAD models (STEP format), finite element analysis (FEA) summary reports, or project-specific pricing for upcoming tenders, contact our engineering sales team directly.
Email: bao@lu-chain.com
Required RFQ Parameters: Water Capacity, Working Pressure, Application Type (Stationary vs. Mobile), Target Volume, and Destination Port.
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