Industrial-Grade Acetylene Steel Cylinders (DOT-8AL / ISO 3807 Compliant)
Engineered for high-safety dissolved acetylene containment. Built with deep-drawn alloy steel plates, filled with high-porosity calcium silicate mass, and optimized for gas distribution and heavy fabrication plants.
Product Specifications & Technical Data
Industrial gas distributors require precise vessel geometry and structural compliance. Standard configurations for bulk import are detailed below.
|
Model |
Water Capacity (L) |
Tare Weight (kg) |
Outer Diameter (mm) |
Height (mm) |
Wall Thickness (mm) |
Working Pressure (bar/psi) |
Thread Specification |
|
ASC-10 |
10.0 |
14.5 |
219 |
430 |
3.2 |
15 / 217 |
CGA 510 / POL |
|
ASC-40 |
40.0 |
45.0 |
250 |
1020 |
4.2 |
15 / 217 |
CGA 510 / W21.8 |
|
ASC-60 |
60.0 |
62.0 |
250 |
1450 |
4.5 |
15 / 217 |
CGA 510 / DIN 477 |
Material, Internal Structure & Manufacturing Process
Acetylene storage requires strict control over internal chemistry to prevent gas dissociation.
Shell Material: Fabricated from HP295 or 34CrMo4 seamless steel billets, offering high tensile strength (> 650 MPa) and controlled elongation to withstand internal stress.
Porous Mass System: Filled with monolithic calcium silicate blocks. This structure maintains a porosity of 88% to 92%, ensuring uniform solvent (acetone) distribution and preventing free acetylene pockets.
Forming & Welding: Shells formed via deep-drawing hydraulic presses. Longitudinal and girth seams welded using automatic Gas Metal Arc Welding (GMAW) with 100% radiographic testing (RT).
Heat Treatment: Normalized at 920°C to eliminate residual stress introduced during cold forming and welding operations.
Quality Control, Inspection & Certifications
Every production lot undergoes verification by third-party inspection bodies (TUV, SGS, BV) prior to export.
Destructive Testing: Batch destructive testing includes tensile testing, yield strength verification, flat-ring crushing, and burst pressure testing (minimum burst threshold >= 4x working pressure).
Non-Destructive Examination (NDE): Hydrostatic pressure testing executed at 2.5x working pressure (37.5 bar) held for minimum 30 seconds. Ultrasonic testing (UT) applied to weld seams.
Solvent & Mass Verification: Acetone saturation control measured by precise weighing before and after solvent charging.
Compliance Standards:
• US Market: DOT-8AL specification.
• EU Market: ISO 3807 and TPED (Directive 2010/35/EU) with Pi-marking.
• Global: ISO 9001 certified manufacturing facility.
Application Context & Operational Guidelines
Primary Uses: Oxy-fuel cutting, structural steel welding, heating, and chemical synthesis.
Handling Parameters: Cylinders must remain in a vertical position for a minimum of 2 hours prior to use if tilted during transit.
Flow Rate Limit: Maximum withdrawal rate must not exceed 1/10th of the cylinder's total acetylene capacity per hour to prevent acetone carryover into regulators and torches.
Supplier Assessment Guide for Procurement Managers
When auditing suppliers for acetylene cylinder manufacturing, verify these operational checkpoints:
Porous Mass Formulation: Confirm the supplier uses monolithic calcium silicate rather than asbestos-based or loose-fill materials, ensuring structural stability under vibration.
Solvent Ratio Control: Request documentation on acetone absorption capacity tolerances per batch to avoid weight discrepancies.
Traceability: Ensure serial numbers, tare weights, and manufacturing dates are permanently stamped on the steel collar, matching the accompanying Mill Test Certificates (MTC).
Export Logistics: Confirm UN-certified hazardous materials packaging and compliant dry-van container loading plans for Class 2.1 flammable gases.
Frequently Asked Questions
Q: What is the standard test cycle required for recertification?
A: Under DOT regulations, periodic requalification is required every 10 years (or 5 years depending on visual inspection status and local jurisdiction). Re-tests involve visual inspection and hydrostatic testing.
Q: Can you supply cylinders pre-charged with acetone and acetylene?
A: Export regulations prohibit shipping cylinders filled with acetylene gas. Cylinders are shipped dry or pre-charged with the correct volume of acetone solvent and nitrogen holding pressure, ready for acetylene filling at your local station.
Q: What thread types can be fitted to the cylinder valve?
A: Standard inventory includes CGA 510 (North America), DIN 477 No. 1 (Europe), and BS 341 No. 3 (UK). Custom inlet and outlet threads are machined to order based on regional distribution requirements.
Q: What is your standard Minimum Order Quantity (MOQ) for custom branding?
A: Standard MOQ for custom body color painting, logo stenciling, and stamped collar markings is one 20-foot container (FCL), accommodating mixed sizes based on technical compatibility.
Request a Technical Quotation / RFQ
To receive an accurate commercial proposal, please provide your target specifications:
Water capacity or model size
Destination port / regulatory standard (DOT or ISO/TPED)
Valve type and thread specification
Quantity and annual forecast
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