... .5mt/ 1X20' FCLDelivery Detail:All the yearCaC2 Calcium Carbide of 25-50 / 50-80 / 70-100 / 80-120 mm sizeSpecificationsCalcium ... Size:1-3,2-4,4-7,7-15,15-25,25-50,50-80,70-100,80-120,120-250mmApplicantion: ... international relative atomic mass)10. SIZE4-7,7-15,15-25,25-50,50-80,80-120MM11. Packing50kg or 100kg iron ... to avoid the spark leads to explosion. calcium carbide 25-50mm highly quality