Acetylene Gas Cylinder

Industrial Acetylene Gas Cylinders | Monolithic Calcium Silicate Porous Mass & DOT-8AL / ISO 3807 / TPED Compliant

 

Product Overview & Technical Specifications

Engineered for safe containment and stable delivery of dissolved acetylene. Unlike standard compressed gas cylinders, these pressure vessels are packed with a high-efficiency monolithic calcium silicate porous mass (asbestos-free, reinforced with glass fiber) and pre-dosed with precision-measured acetone to suppress gas dissociation. Formed from high-grade seamless steel billets to withstand continuous industrial charging cycles.

Model / Size

Water Capacity (L / in3)

Tare Weight w/o Cap (kg / lbs)

Working Pressure

Test Pressure

Standard Thread Connection

Outer Diameter (mm)

Height w/ Valve & Cap (mm)

MC (10 CF)

2.0 L

3.5 kg / 7.7 lbs

0.1 MPa (15 PSI)

3.3 MPa / 5.2 MPa*

CGA 200 / 3/8 in NGT

96.5 mm

390 mm

B (40 CF)

7.7 L

11.4 kg / 25.2 lbs

0.1 MPa (15 PSI)

3.3 MPa / 5.2 MPa*

CGA 510 / 3/4 in NGT

152.4 mm

589 mm

Size 4 (150 CF)

25.2 L

24.9 kg / 54.9 lbs

0.1 MPa (15 PSI)

3.3 MPa / 5.2 MPa*

CGA 510 / 3/4 in NGT

209.6 mm

994 mm

Size 5 (250 CF)

43.0 L

54.0 kg / 119.0 lbs

0.1 MPa (15 PSI)

3.3 MPa / 5.2 MPa*

CGA 510 / 3/4 in NGT

262.0 mm

1050 mm

 

 
 
Product Selection & Operational Limits

 

Correct cylinder selection requires calculating gas consumption rates and matching regional regulatory compliance codes.

Withdrawal Rate Threshold

Continuous gas extraction must not exceed 1/10 of the total cylinder capacity per hour to prevent acetone carryover into regulators and torches. Manifold systems are required for high-flow fabrication lines.

Solvent Equilibrium

Acetone levels are factory-calibrated relative to the porous mass volume. Recertification facilities must log solvent weight additions during periodic maintenance.

Safety Relief Assemblies

Fitted with brass valve bodies incorporating bottom fusible plugs (melting range 100°C to 104°C) to vent gas safely during external fire exposure.

 

Industrial Application Suitability

Built for heavy fabrication environments requiring high-temperature fuel gas performance:

 
 

Metal Fabrication & Shipyards

Structural steel plate cutting, scarfing, and heavy preheating via oxy-acetylene torches.

 
 
 

HVAC Manufacturing & Repair

High-output copper-to-brass brazing and localized thermal straightening.

 
 
 

Regional Gas Bottling Plants

Supplied vacuum-conditioned with inert gas preservation, ready for direct acetylene charging and local distribution.

 

 

Manufacturing & Quality Control Workflow
 

Strict metallurgical controls and automated processing eliminate structural defects and porous mass settling:

Billet Testing

Ultrasonic inspection of seamless steel stock for internal laminations and inclusions.

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Deep Drawing & Hot Spinning

Mechanical shell forming to maintain uniform wall thickness profiles.

 

Thermal Normalization

Full-body heat treatment to eliminate internal mechanical stresses and optimize tensile boundaries.

 

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Porous Mass Infusion & Autoclave Curing

Automated injection of calcium silicate slurry followed by controlled steam curing to achieve uniform micro-porosity (88% to 92% void volume).

Vacuum Dehydration & Acetone Charging

Multi-stage thermal drying followed by precise weight-monitored acetone saturation.

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Pressure Proof Testing

Hydrostatic expansion and proof-pressure testing conducted at designated test pressures alongside pneumatic leak tests.

 

Compliance, Certifications & Traceability
 

Global deployment requires explicit regulatory documentation and independent validation:

Governing Standards

Manufactured to DOT-8AL / TC-8WAM (North America) and ISO 3807 / EN 1800 with TPED (Transportable Pressure Equipment Directive) compliance for the European market.

Independent Third-Party Inspection

Batch witness testing and physical verification available via TÜV, SGS, or Bureau Veritas (Pi-marked for European distribution where applicable).

Permanent Stamping

Heat numbers, serial numbers, tare weight (including valve, porous mass, and baseline solvent), and manufacturing dates are cold-stamped on the shoulder, matching the Mill Test Certificate (MTC).

 

Supplier Evaluation & Manufacturing Capacity

 

Assessing factory readiness for long-term supply agreements:

Production Volume

Automated lines yielding up to 60,000 cylinders annually across standard industrial sizes.

OEM/ODM Customization

Custom powder-coat paint matching RAL palettes, customer trademark rolling on shoulders, and tailored threading configurations (NPT, BSP, CGA, W21.8).

Logistics & Export Packaging

Secured in heavy wooden export pallets or shrink-wrapped container cradles complete with dangerous goods (DG) packing declarations for Class 2.1 transport.

 

Request a Quotation (RFQ)

Include the following parameters to receive an immediate commercial proposal:

Specification Code

DOT-8AL, ISO 3807, or TPED (Pi-marked)?

Order Volume

Trial batch quantity vs. annual contracted forecast.

Valve & Cap Configuration

Pre-installed CGA/W21.8 valves and protective caps required?

Port of Destination

For ocean freight and hazardous shipping calculations.

[ Submit RFQ / Contact Technical Sales ]

 

 

Frequently Asked Questions

 

Q: What is the mandatory requalification interval for acetylene cylinders?

A: In accordance with DOT, TPED, and ISO 10462 regulations, acetylene cylinders require periodic retesting every 5 to 10 years (depending on regional authority rules), which includes visual shell examination and evaluation of the porous mass condition.

Q: Are cylinders shipped charged with acetylene gas?

A: No. International maritime regulations strictly classify acetylene as a flammable gas (Class 2.1). Cylinders are shipped empty (vacuum-purged with residual inert gas or baseline acetone saturation), and filled locally by regional gas distributors.

Q: Why must acetylene be dissolved in acetone inside a porous mass?

A: Free acetylene gas stored under pressure exceeding 15 PSI (0.1 MPa) can undergo violent spontaneous dissociation. The porous mass divides the internal volume into microscopic cells to stop decomposition propagation, while acetone absorbs up to 25 times its volume to stabilize the gas safely.

Q: What is the Minimum Order Quantity (MOQ) for custom color-painted cylinders?

A: For standard stock finishes (grey/charcoal with regulatory markings), the MOQ is one 20-foot container load. For custom corporate paint colors and embossed neck rings, the MOQ starts at 500 units per size.

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