Calcium Carbide 1.Size:2-4mm,4-7mm,7-15,15-25, ... -305L/KG 3.Packing:50/100/200kg Products name:Calcium Carbide(CaC2)Size:2-4mm,4-7mm,7-15,15-25 ... the both of the tow parties)Usefull:1.The main raw material for producing acetylene gas.2.Cutting and welding for ... and water pipe in storehouse.7. China supplier of Calcium Carbide: 70-100 MM CALCIUM ...