... ; Size: 4-7mm,7-15mm,15-25mm.25-50mm,50-80mm, calcium carbide 50 80mm Applicantion: This product is lumpy substance, its ... atomic mass)10. SIZE4-7,7-15,15-25,25-50,50-80,80-120MM11. Packing50kg or 100kg iron drum Cautions during ... .It should avoid meeting water and moisture.It should give off the acetylene in iron drum before storing in warehouse. Rolling ...