... 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).Sizes:4-7mm ... or 50kg new iron drums without pallets 4-7mm Gas Yield≥280L/KG, 0.06%≤PH3 content in acetylene ... .,0.1%≤H2S content in acetylene max, 7-15mm,Gas Yield≥290L/KG, 0.06%≤PH3 content in acetylene ...