... 1.Calcium carbide 2.Size:2-4mm,4-7mm,7-15,15-25,25-50mm,50-80mm,80-120mm 3.Gas yield:285L/ ... KG-305L/KG 4.Packing:25,50kg&100kg 1.Size:2-4mm,4-7mm, ... 7-15,15-25,25-50mm,50-80mm,80-120mm 2.Gas yield:295L/KG-305L/KG 3.Packing:50kg&100kg&200kgProducts ... parties)Usefull:1.The main raw material for producing acetylene gas.2.Cutting and welding for metal material.3.To synthesize ...