... ,80-120mm 2.Gas yield:285L/KG-305L/KG 3.Packing:50/100/200kg Products name:Calcium Carbide(CaC2)Size:2-4mm,4-7mm ... ,7-15,15-25,25-50mm,50-80mm,80-120mmGas yield:285L/KG-305L ... -2004)ITEMINDEXSpecial GradeA gradeAccept GradeGas yield 20°C 101.3kPa L/kg≥Size mm80-20030028025550-8030028025525-503002802504-25300280250PH3 %(v/v)≤0.060 ...