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 quality Specification: Gas Yield: 295L/KG min, Size ... , 15-25mm, 25-50mm, 50-80mm, 70-100mm, 80-120mm Packing: in 40kg new steel drum, 50kg new steel drum, 70kg ...