calcium carbide We are calcium carbide manufacturer in Inner Mongolia China, currently we can offer you the calcium carbide with the following specification: Gas Yield: 285L/kg, 295L/kg, 305L/kg.Package: New iron drum with 50kg/drum, 100kg/drum, 200kg/drum..Size: 7-15mm, 15-25mm, 25-50mm,50-80mm,80-120mm,120-200mm