tubing vs. piping
Thread Starter
Joined: May 2002
Posts: 3
Likes: 1
From: banned NC
tubing vs. piping
just something that i see a lot of people being confused about, or just not knowing, which is ok, but i just wanted to share.
tubing:
roll cages, exhausts, headers, etc
measured by OD and wall thickness, so 3" tubing has a 3" OD
regular plumber type piping, schedule is alittle different i dont know too much about where those dimensions came from:
measure as ID generally, so regular 1.5" piping (not the turbo manifold stuff you see most people making theirs out of as that is schedule based, and wall thicknesses differ making it not exactly follow the "rule") means the ID is 1.5"
thats all, and hopefully we can start saying the right thing when talking about something.
thanks
tubing:
roll cages, exhausts, headers, etc
measured by OD and wall thickness, so 3" tubing has a 3" OD
regular plumber type piping, schedule is alittle different i dont know too much about where those dimensions came from:
measure as ID generally, so regular 1.5" piping (not the turbo manifold stuff you see most people making theirs out of as that is schedule based, and wall thicknesses differ making it not exactly follow the "rule") means the ID is 1.5"
thats all, and hopefully we can start saying the right thing when talking about something.
thanks
Joined: Jan 2003
Posts: 73
Likes: 0
From: Victoria, BC, Canada
Re: tubing vs. piping (dfoxengr)
Pipe is sized in nominal sizes up to 12", 14" and up is OD sized like tubing.
OD of the pipe and tubing will always stay the same the wall thickness/schedule will change the ID of the pipe and tubing.
Don't get this confused with copper pipe not tube, thats sized yet again in a different way called streamline.
Pipe sizes. Not tubing.
Nominal size / OD / SCHED 5 / SCHED 10 / SCHED 40 / SCHED 80 / SCHED 160
3/4" / 1.050 / 0.065 / 0.083 / 0.133 / 0.154 / 0.218
1" / 1.315/ 0.065 / 0.109 / 0.133 / 0.179 / 0.250
1-1/4 " / 1.660 / 0.065 / 0.109 / 0.140 / 0.191 / 0.250
1-1/2 " / 1.900 / 0.065 / 0.109 / 0.145 / 0.200 / 0.281
SCHED 80 is some times referred to as extra strong ( XS) or (XH) there is also (XXS) or (XXH) that is even thicker than SCHED 160.
Other schedule sizes i didn't list are 20, 30, 60, 100, 120, 140. they are some what rare to find in some nominal sizes. unless its the larger sizes of pipe 8" and up in general.
I know that is far more info than any would care to know but i thought to add it any way some one out there might find some use of it . Allot of plumbers don't know allot of this info
Modified by GTiR NX at 6:07 PM 6/20/2007
OD of the pipe and tubing will always stay the same the wall thickness/schedule will change the ID of the pipe and tubing.
Don't get this confused with copper pipe not tube, thats sized yet again in a different way called streamline.
Pipe sizes. Not tubing.
Nominal size / OD / SCHED 5 / SCHED 10 / SCHED 40 / SCHED 80 / SCHED 160
3/4" / 1.050 / 0.065 / 0.083 / 0.133 / 0.154 / 0.218
1" / 1.315/ 0.065 / 0.109 / 0.133 / 0.179 / 0.250
1-1/4 " / 1.660 / 0.065 / 0.109 / 0.140 / 0.191 / 0.250
1-1/2 " / 1.900 / 0.065 / 0.109 / 0.145 / 0.200 / 0.281
SCHED 80 is some times referred to as extra strong ( XS) or (XH) there is also (XXS) or (XXH) that is even thicker than SCHED 160.
Other schedule sizes i didn't list are 20, 30, 60, 100, 120, 140. they are some what rare to find in some nominal sizes. unless its the larger sizes of pipe 8" and up in general.
I know that is far more info than any would care to know but i thought to add it any way some one out there might find some use of it . Allot of plumbers don't know allot of this info
Modified by GTiR NX at 6:07 PM 6/20/2007
OG Fabricator
Joined: Feb 2005
Posts: 1,864
Likes: 1
From: Burlington, Ont., Canada
i don't know all the different sizes, but usually tube is given a wall thickness as "gauge" for example, very common size is 16 gauge tube (wall thickness of .063"). so 2.5" diameter tube would have an od of 2.5" regardless of the gauge thickness. usually the higher the gauge #, the thinner the wall thickness.
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