Pipe Nipple Assortment Application Air Fuel Water Finish/Coating Galvanized Fitting Compatibility Schedule 40 Included Lengths (6) 2 1/2 in (6) 2 in (6) 3 1/2 in (6) 3 in (6) 4 1/2 in (6) 4 in (6) 5 1/2 in (6) 5 in (6) 6 in (6) Close Material Steel Maximum Operating Pressure 1064 psi @ 650 Degrees F Maximum Operating Temperature 600 Degrees F Maximum Steam Pressure 1064 psi @ 650 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -20 Degrees F