Steel Nipple Application Air Natural Gas Non-Potable Water Oil Steam Fitting Compatibility Schedule 80 Inside Diameter 5 49/64 in Manufacture Location Made in USA Material Steel Material Grade Grade B Metal Pipe Construction Welded Nominal Pipe Size 6 in Outside Diameter 6 5/8 in Pipe Weld Type Continuous Weld Schedule Schedule 80 Side A Connection Type Threaded Side A Gender Male Side A Thread Type NPT Side B Connection Type Threaded Side B Gender Male