Technical Specifications Matrix
Comprehensive engineering data for BTPS IS 7312 compliant Dissolved Acetylene cylinders across standard capacities.
| Parameter | BTPS 17.2 Ltr Welded | BTPS 41.0 Ltr Welded | BTPS 41.0 Ltr Seamless |
|---|---|---|---|
| Construction Type | Three-Piece Welded | Three-Piece Welded | Seamless |
| Water Capacity | 17.2 Ltr (+3% / -0%) | 41.0 Ltr (+3% / -0%) | 41.0 Ltr (+3% / -0%) |
| Hydrostatic Test Pressure | 53 kgf/cm² | 53 kgf/cm² | 250 kgf/cm² |
| Pneumatic Leak Test Pressure | 40 kgf/cm² | 40 kgf/cm² | 150 kgf/cm² |
| Max Working Pressure | 16 kgf/cm² | 16 kgf/cm² | 16 kgf/cm² |
| Gas Capacity (Approx) | 3.1 kg | 7.0 kg | 7.0 kg |
| Outer Diameter | 258 mm | 258 mm | 232 mm |
| Wall Thickness | 4.0 mm | 4.0 mm | 5.6 mm |
| Height w/o Valve/Cap | 470 mm | 960 mm | 1220 mm |
| Tare Weight (Approx) | 27 kg | 53 kg | 65 kg |
| Fusible Safety Plugs | Two Fusible Plugs (100°C) | Two Fusible Plugs (100°C) | N/A |
Manufacturing Integrity & Safety
Core safety technologies ensuring safe transport and storage of dissolved acetylene at 16 kgf/cm² working pressure.
Monolithic Calcium Silicate Integrity
Our DA cylinders utilize a highly porous (90%–92%) monolithic calcium silicate mass structure. This internal matrix provides a minimum crushing strength of 22 kgf/cm², completely eliminating internal voids to prevent hazardous acetylene decomposition.
Submerged Arc Welding & Thermal Stress Relieving
Welded variants employ automated Submerged Arc Welding (SAW) for circumferential seams using JSW prime steel (IS 6240). Post-weld, every cylinder undergoes rigorous thermal stress relieving and 100% X-ray radiographic inspection to guarantee structural integrity under 53 kgf/cm² test pressures.
Monolithic Calcium Silicate & Solvent System
Acetylene gas is chemically unstable when compressed alone above 2 kgf/cm². BTPS DA cylinders integrate a proprietary monolithic porous mass with acetone solvent for completely stable, safe high-pressure gas storage at 16 kgf/cm².
90% – 92% Porosity Range
Precision-baked calcium silicate mass provides 90–92% interconnected capillary pore volume, maximizing acetone absorption while completely blocking shockwave propagation.
22 kgf/cm² Compression Strength
Rigid structural compression strength exceeds the mandatory 22 kgf/cm² IS 7312 threshold, preventing internal mass settling or cavity formation during transport.
Acetone Solvent (CH3COCH3)
Filled with high-purity Acetone solvent which dissolves acetylene gas up to 25 times its own volume per atmosphere of pressure for safe bulk storage.
11% Thermal Safety Space
Engineered with an explicit 11% safety expansion space inside the porous matrix to accommodate liquid solvent expansion across high ambient temperature swings.
IS 3224 Valve & Thermal Fusible Plugs
Dissolved Acetylene cylinder safety depends heavily on certified mechanical relief devices. All BTPS welded DA cylinders feature IS 3224 compliant forged brass valves paired with dual thermal release fusible plugs.
In fire or severe thermal exposure situations, the fusible plugs melt at a precise temperature threshold to vent gas safely, preventing catastrophic cylinder rupture.
Safety Fittings Specifications
- Fusible Plug Melting Temperature: $100^{\circ}C (+4^{\circ}C / -2^{\circ}C)$.
- Plug Configuration: Dual fusible plugs fitted on top and bottom heads of 17.2L and 41L welded shells.
- Seamless Variant Safety: High-pressure 250 kgf/cm² seamless cylinders utilize direct valve thread isolation.
- Mechanical Protection: Fitted with heavy-duty steel valve guards to protect valve spindles against impact.
Factory Certified Delivery Definition
Understanding BTPS’s complete scope of supply for B2B industrial gas refilling contracts.
Integrated in-house with monolithic calcium silicate porous mass baked to 90–92% porosity.
Filled with exact specified tare acetone solvent volume and pre-saturated with gas for immediate refilling.
Fitted with IS 3224 valve, fusible plugs, valve guard, grit-blasted thermal zinc metallizing, and enamel paint.
Supplied with official Bureau of Indian Standards inspection certificates and CCOE/PESO statutory approvals.
Dissolved Acetylene Industrial Use Cases
Dissolved acetylene provides the highest flame temperature ($3,160^{\circ}C$) among fuel gases when mixed with oxygen, making BTPS DA cylinders essential across key heavy industries.
High-heat oxy-acetylene torch welding across heavy structural fabrication, ship repair, and pipeline assembly.
Rapid, clean flame cutting of thick carbon steel plates and structural steel sections in steel plants and foundries.
Standardized empty cylinders supplied pre-saturated with acetone and gas for rapid filling by merchant gas distributors.
Localized thermal treatment, flame hardening of mechanical parts, and thermal gouging in machinery manufacturing.
Regulatory Compliance Standards
Manufactured strictly adhering to Indian structural and explosive safety codes (IS 7312, IS 3224, and PESO/CCOE approvals).
Technical FAQ
Common engineering inquiries regarding BTPS DA Cylinders.
What is the formulation of the porous mass?
What is the formulation of the porous mass?
The monolithic porous mass is a meticulously formulated blend of calcium silicate, maintaining a porosity of 90%–92% and minimum crushing strength of 22 kgf/cm². This structure safely absorbs acetone and dissolved acetylene, preventing free gas pockets.
What safety fittings are standard on these cylinders?
What safety fittings are standard on these cylinders?
All welded DA cylinders are equipped with IS 3224 certified valves featuring two fusible plugs designed to melt at 100°C (+4°C/-2°C) to relieve pressure during thermal emergencies. They are further protected by robust steel valve guards complying with IS 6240.
What are the designated test and working pressures?
What are the designated test and working pressures?
BTPS DA cylinders are designed for a standard maximum working pressure of 16 kgf/cm² at 15°C. Welded variants undergo a hydrostatic test pressure of 53 kgf/cm² and pneumatic leak testing at 40 kgf/cm², while seamless variants undergo 250 kgf/cm² hydrostatic testing.