Technical Overview & Product Specifications

Engineered for high-volume virtual pipeline logistics and industrial gas storage, our Industrial CNG Storage Cylinders provide reliable containment at operating pressures up to 25 MPa. Built to withstand rigorous cyclic loading, these pressure vessels balance structural integrity with optimal weight-to-capacity ratios for stationary skids and mobile transport trailers.

Standard Product Matrix

Model Series	Material Construction	Water Capacity (L)	Working Pressure (MPa)	Test Pressure (MPa)	Outer Diameter (mm)	Length Range (mm)	Compliance Standard
CS-T1-500	Seamless Cr-Mo Steel (Type I)	300 - 500	20.0 / 25.0	30.0 / 37.5	406 / 559	2500 - 6000	ISO 11120 / ASME
CC-T3-320	Carbon Fiber / Aluminum (Type III)	150 - 450	20.0 / 25.0	30.0 / 37.5	420 - 530	1200 - 3000	ISO 11119-2 / DOT
CC-T4-400	Carbon & Glass Fiber / HDPE (Type IV)	200 - 500	20.0 / 25.0	30.0 / 37.5	450 - 600	1500 - 3500	ISO 11119-3 / TPED

Product Selection Guide

Selecting the correct cylinder specification depends directly on your deployment method-stationary storage or mobile transport.

Type I (All-Steel): Selected for stationary industrial plant backup systems where total footprint and dead weight are secondary to unit cost and extreme impact resistance. Fabricated from quenched and tempered 30CrMo seamless steel billets.

Type III (Aluminum Liner + Carbon Fiber): Specified for high-frequency transport trailers (virtual pipelines). The seamless 6061-T6 aluminum liner offers complete gas compatibility, while full-wrap T700 carbon fiber significantly reduces tare weight, maximizing payload capacity per transport run.

Type IV (Plastic Liner + Composite Wrap): Deployed where absolute corrosion immunity and minimum weight are critical. Features a rotationally molded high-density polyethylene (HDPE) liner reinforced with a hybrid carbon/glass fiber structural epoxy matrix.

Typical Application Scenarios

Virtual Pipeline & CNG Trailers: High-capacity Type III and Type IV assemblies mounted on multi-axle trailers to transport natural gas to off-grid industrial plants and municipal distribution grids.

Industrial Peak Shaving & Backup Power: Stationary storage banks integrated into gas turbine power generation plants and manufacturing facilities to stabilize fuel supply during peak demand periods or pipeline maintenance.

Remote Off-Grid Energy Supply: Continuous fuel supply units feeding large-scale diesel-to-gas converted generators in mining sites and remote industrial operations.

Manufacturing Process & Quality Control

Structural safety in high-pressure containment relies on strict material controls and verifiable manufacturing steps.

Material Inspection: Incoming 30CrMo steel billets and aerospace-grade carbon fiber filaments undergo spectral analysis and tensile testing prior to production intake.

Liner Formation: Steel billets undergo hot piercing and precision deep drawing (Type I); aluminum liners are deep-drawn or flow-formed to maintain exact wall-thickness tolerance (Type III).

Filament Winding: Computer-controlled multi-axis CNC winding machines apply carbon and glass fibers under calibrated tension profiles over the structural liners.

Curing & Thermal Processing: Composite cylinders pass through automated multi-stage temperature-controlled curing ovens to polymerize the epoxy matrix without inducing thermal stress.

Mandatory Testing Protocol:

• Hydrostatic Pressure Test: Every batch undergoes pressure testing at 1.5 times working pressure to verify volumetric expansion limits.
• Burst Pressure Testing: Statistical lot testing to verify safety margins exceed code-specified thresholds (2.25x+).
• Ultrasonic & Eddy Current Inspection: Detects subsurface flaws in metal liners and composite interfaces.
• Cyclic Fatigue Testing: Sample units undergo accelerated pressure-cycle testing up to 15,000+ cycles.

Supplier Evaluation Criteria

When evaluating manufacturing partners for high-pressure infrastructure, project engineers and procurement teams require verifiable credentials:

Manufacturing Capacity: Automated CNC flow-forming lines, 6-axis filament winding cells, and vertical heat-treatment furnaces housed in our 45,000 square meter production facility.

Global Certifications: Production lines certified under ISO 9001, ISO 14001, and IATF 16949. Products carry third-party inspection certificates from TÜV, BV, and SGS matching ASME Section VIII, ISO 11120, ISO 11119, and TPED directives.

Traceability: Laser-etched serial numbers and embedded RFID tags link every cylinder directly to its raw material mill test report (MTR) and hydro-test logs.

Procurement Decision & Ordering Workflow

Technical Inquiry Submission: Submit your project parameters (Required gas volume, daily flow rate, working pressure, installation environment, and target compliance codes like ASME or TPED).

Engineering Review & Drawing Approval: Our applications engineering team returns a formal CAD layout, weight calculation, and finite element analysis (FEA) summary within 48 hours.

Sample & Prototype Validation: For custom skid integrators, sample batches are made available for third-party witness testing.

Production & Inspection: Batch production initiates upon drawing sign-off. Third-party inspection agencies (TPI) inspect and sign off prior to final crating.

Logistics & Export Documentation: Shipped in compliant heavy-duty cradle frames with complete documentation packages including MTRs, Certificate of Conformity, and pressure test logs.

Frequently Asked Questions

Q: What is the standard design life of your composite CNG cylinders?

A: Type III and Type IV composite cylinders are engineered for a standard operational service life of 15 to 20 years, provided they operate within specified pressure and temperature ranges (-40°C to +65°C) and undergo mandatory periodic recertification.

Q: What third-party inspection authorities validate your production?

A: All production batches intended for international export can be inspected and certified by independent agencies including TÜV Rheinland, Bureau Veritas (BV), and SGS according to client requirements.

Q: Can you supply complete skid-mounted manifolds along with the cylinders?

A: Yes. We supply fully integrated storage skids complete with stainless steel 316 tubing, high-pressure ball valves, excess flow valves, pressure relief devices (PRD / fusible plugs), and master inlet/outlet manifolds pressure-tested as a complete assembly.

Q: What are your typical production lead times for bulk orders?

A: Standard production lead times range from 45 to 60 days depending on order volume, raw material availability, and specific third-party inspection scheduling.

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