Pipe Application Air Natural Gas Non-Potable Water Propane Steam Finish/Coating Galvanized Fitting Compatibility Class 150 Gravity Flow No Inside Diameter 1 3/8 in Material Stainless Steel Material Grade 316 Maximum Operating Pressure 1916 psi @ 650 Degrees F Maximum Operating Temperature 600 Degrees F Maximum Steam Pressure 977 psi @ 650 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 1 1/4 in Outside Diameter 1 11/16 in