1.Calcium carbide for acetylene gas 2.ISO9001 3.Gas yield: 280,290,295L/KG 4.Timely delivery ... Calcium carbide is used in the gerneration of acetylene gas for welding,and as a reagent.we can produce all ... kinds of calcium for you. Specification: 1).Gas yield: 280L/KG,290L/KG,295L/KG2 ... or 50kg new iron drums without pallets 4-7mm Gas Yield≥280L/KG, 0.06%≤PH3 content in acetylene ...