MAPP GAS physical property: Actual burning temperature: approach to 3600 degree fahrenheit The full burning time: nearly 2hours and 40mins Scientific blend proportion and good flame to guarantee good welding result and shorten working time Pressure(psig)110 psig, at temperature 20 celsius degree Portable for using. G.W.890g /cyl, N.W. 453.6 g/cyl,12 cyls /ctn, 17004 cylinders per 20ft container.