Approved Vendor Pipe: Black Steel, 3 in Nominal Pipe Size, 5 ft Lg, Unthreaded, Schedule 40, Welded Model: 21122LS

3 in. X 7 in. NPT Threaded - Schedule 40 Welded Carbon Steel - Black Pipe Nipple

Duravent, 3in. Diameter 12in. Length Pipe Black, Included (Qty.) 1 Material Galvanized Steel, Model 3PVL-12B

Supplygiant 3/4 X 1 Inch Black Steel Pipe (10-Pack), Heavy Duty Industrial Malleable Iron Pipes, Pre Cut Threaded Close Nipple Great For All DIY

Beck Pipe: Black Steel, 3 in Nominal Pipe Size, 42 in Lg, Threaded On Both Ends, Schedule 40, Welded Model: 0330252636

3" X Close NPT Threaded - Schedule 80 Welded Carbon Steel - Black Pipe Nipple