Calcium Carbide Gas Yield: 295L/KG min, Size: 1-4mm, 4-7mm, ... , 15-25mm, 25-50mm, 50-80mm, 70-100mm, 80-120mm Calcium Carbide for high qualitySpecification:Gas Yield: 295L/KG min,Size: 0 ... 40kg new steel drum, 50kg new steel drum, 70kg new steel drum, 100kg new steel drum, 120kg new steel drum, 200kg new steel drum, 220kg new steel drum Calcium Carbide