Pipe Size

Welded Seam Tubing

See table of standard pipe sizes up to XXH:

• http://www.engineersedge.com/pipe_schedules.htm

OD and ID

• http://www.engineeringtoolbox.com/ansi-steel-pipes-d_305.html. 1" schedule 40 may fit inside 1-1/4" schedule 40.
• 2" schedule 80 fits around 1-7/8" shaft - it is 1.939 ID, or 0.06 slop
• 2" Schedule 80 fits better around 1-15/16" shaft - see 2" Schedule 80 Pipe

Pipe PSI

• Up to 12" - https://www.engineeringtoolbox.com/wrought-steel-pipe-bursting-pressure-d_1123.html
• Up to 20" - http://files.engineering.com/download.aspx?folder=fbf25f86-d925-43a9-a739-ad53aa8a4fef&file=Working_Pressure.pdf
• Schedule 5 up to 24" - about 200PSI working PSI - [1]