Engineered specifically for oxy-acetylene metal fabrication and industrial cutting torches, our industrial-grade calcium carbide for welding offers exceptional purity and high chemical reactivity. Manufactured via high-temperature electro-thermal smelting, this raw material rapidly hydrolyzes upon contact with water to produce a steady, high-purity acetylene gas stream, ensuring stable flame temperature and optimal penetration depth during heavy-duty metal joining and profile cutting operations.
In the heavy industrial fabrication, shipbuilding, and metalworking sectors, generating a high-purity, steady acetylene gas stream is critical for precision flame operations. As a foundational raw material under our calcium carbide applications category, our industrial-grade calcium carbide (CaC2) is specifically formulated to meet the demanding requirements of direct-fed acetylene generators and portable gas plants.
Selecting high-purity calcium carbide for welding ensures rapid hydrolysis, minimal lime sludge accumulation, and a consistently hot oxy-acetylene flame capable of reaching temperatures over 3,100°C (5,600°F). Whether utilized for structural steel profiling, pipe fabrication, or heavy scrap cutting, our product delivers the reliability that global industrial distributors and welding supply partners demand.
For optimal metal cutting and joining performance, controlling trace impurities such as phosphine (PH3) and hydrogen sulfide (H2S) is mandatory. High impurity concentrations can severely compromise weld seam integrity and cause torch tip corrosion.
| Quality Parameter | Specification Standard | Test Protocol |
| Chemical Formula | CaC2 | ISO / GB Standards |
| CAS Registry Number | 75-20-7 | Standard Registry |
| Min. Calcium Carbide Purity | 78% – 85% Min. | Volumetric Analysis |
| Guaranteed Gas Yield | 295 L/kg – 305 L/kg Min. | Gasometric Titration |
| Phosphine (PH3) Content | <= 0.08% (v/v) | Gas Chromatography |
| Hydrogen Sulfide (H2S) | <= 0.15% (v/v) | Chemical Titration |
| Standard Lump Granulation | 25–50 mm / 50–80 mm | Screen Analysis |
| Sludge Residue | Minimal Solid Residue | Gravimetric Analysis |
Using top-grade calcium carbide for welding with a guaranteed minimum gas yield of 295 L/kg ensures high gas output per kilogram, significantly reducing overall operational downtime and maintenance costs for commercial gas suppliers.
When mixed with pure oxygen, the acetylene generated from our CaC2 stone produces the hottest fuel gas flame available in the metalworking industry. This intense heat input allows for rapid preheating times and exceptionally clean kerf edges during heavy-plate flame cutting.
Engineered with strict volatile impurity limits, our calcium carbide for welding prevents carbon soot buildup and chemical residues in torch nozzles and flash arrestors, extending equipment service life and ensuring continuous operator productivity.
The uniform lump sizing (typically 25–50mm or 50–80mm) provides a predictable hydrolysis rate in low-pressure and medium-pressure acetylene generators, maintaining stable system gas pressures during uninterrupted industrial cutting shifts.
Because calcium carbide reacts rapidly with atmospheric moisture to release flammable acetylene gas, robust hazardous goods (IMDG Class 4.3) packaging is essential for international transit:
Packaging Options: Sealed 50 kg or 100 kg steel drums, built with cold-rolled corrugated iron to resist puncture and impact.
Hermetic Protection: Each drum undergoes dry nitrogen flushing prior to final sealing with high-grade rubber gaskets to prevent moisture ingress.
Shipping Compliance: Fully compliant with UN 1402 Class 4.3 Packing Group I/II standards, complete with hazardous chemical safety labeling.
We partner with global chemical wholesalers, regional gas producers, and industrial equipment importers under flexible commercial terms:
Minimum Order Quantity (MOQ): 20 Metric Tons (1 x 20ft Full Container Load)
Supported Incoterms: FOB, CFR, CIF, DDP
Payment Terms: T/T (Telegraphic Transfer) or Irrevocable L/C at sight
Accompanying Documentation: Certificate of Analysis (COA), Safety Data Sheet (MSDS/SDS), UN Packaging Certificate, Bill of Lading, Certificate of Origin.
Secure a reliable direct-factory supply of premium calcium carbide for welding and acetylene cutting today. Contact our B2B sales desk to request real-time pricing matrices, technical datasheets, or volume discount schedules for your port of discharge.
