calcium carbide, dGrey, brown or black solid, purple,in water, turns into acetylene and calcium hydroxide and releases hea calcium carbide Size:0-4mm,4-7mm,7-15mm,15-25mm,25-50mm,50-80mm,80-120mm,120-250mm Gas yield:285l/kg,295l/kg,305l/kg.Packing in 50/100/200/250kgs new steel drumWe can produce all sizes of calcium carbide as your requirement such as 50-80mm,25-5omm,15-25mm,7-15mm,80-120mm etc. ...