... are as follows:1. Nm3 is gas measured at 1atm and 0deg.C2. Sm3 is gas measured at 1 atm and 15deg ... .C3. 561Nm3=1mt=591m3 at 15deg.C4. 1Nm3 gas = 3.933 lb, 1.784Kgs, 38.04scf, 1.055Sm3, 0 ... ,LArLO2,LN2,LAr,LCO2Capacity20m318 m316.95 m318.05m319.6 m318.05 m318.05 m3Outside size6058*2438*25916058*2438*25916058*2438*25916058*2438 ... or GBASME or GBASME or GBASME or GB Supply Argon gas