Great question!

Thought the same thing!

Tube. Lots of extra material to bore to exacting dims.

Great question.

I guess "never changes" refers to the evenness of OD for a given pipe. It means that even though pipes are specified by their nominal internal diameter, this parameter is not as consistent throughout the length of the pipe as compared to OD.

Oh, good point, I didn't think about variance along the length of the pipe.

A 1" pipe refers to O.D. it will be available in different schedules 40, 80... Giving different I.D.s

But the video says pipes are measured by the inside diameter. This is how they're sold but maybe not what actual size they are. Maybe the reason the O.D. never changes is so that couplers will fit pipes regardless of what schedule they are.

Watch the video again and see if you can spot your mistake.

Only experience in the market will teach you this.

antalz Uh, you SURE about that? Gas pipe, for instance, needs to be compatible with stuff installed as much a a century ago. Wouldn't surprise me if certain (nominally) metric nations retain inch-based pipe for continuity reasons...

Can't speak for industry, but my local Hornbach has only metric pipes and tubes, in plastic, aluminium, steel and PVC. Some of the fittings are inch, like shower taps tend to be 1/2" or 3/8"

bcubed72 - there is a far simpler solution than using imperial measurements: use normal metric and if you need to connect them use an adapter. And as it is used for well over 100 years by now - no, there aren't many things if any at all left that use other measuring units.

Those shower taps are probably not inches though. But in the old measurements of the country you buy them in. And pipes can often be bought in both the old and in metric measurements and sometimes in inches aswell. Although I'm pretty sure gaspipes have to be metric.

I have never seen a length expressed in anything other than imperial or metric units. All the ancient european units have disapeared. What kind of other units are you thinking of?

walter kersting the chlorine vapor from pools is very corrosive and damaging to steels, even stainless.

You are both cruel nasty people -- and entirely correct.

Haha you beat me too it!

Prodigious Pi yep they made him look goofy as hell lol

Prodigious Pi yep that camera angles where the narrator's face is looking @ a non existing audience has been so over used that it is now irritating. It expresses a amature video photographers not the intended professional look

You only notice this after someone mentions it

That makes even less sense than the video description. Good work. What I know: OD changes with *both* ID and schedule. Further, Pipe that is used for refrigeration or A/C (ACR) is called tubing and is sized by the OD. What I suspect: In the end, you have no way to identify or specify what you need for a given project because the entire industry is run by turtles. Stupid, mean, bitterly jealous turtles. There are standards for pipe or tubing sizes, but they cannot be counted on when ordering as only two or three people knew what those standards were, and they died without divulging their secrets, so every vendor just makes up some random dimensions. You can specify whatever you want for a phone or online order, but you'll take what the vendor gives you and like it. If ordering in person, you *must* take a piece of pipe to the vendor and insist on seeing a sample so you can test fit your pipe to theirs. That's the only option that has any chance to work. Take a turtle hammer though.

Giblet535 and we did not even cover GRADE in today's lesson.

Giblet535 I always order by sizes measured in turtles, but don't get me started in the Schedule Snapper vs Schedule Painted size differences!

Giblet lol maybe you should take a basic class in refrig or in plumbing or pipefitting. Any apprentice has to know that stuff within a couple months or they are useless.It is done like that so that anyone can understand how to size and order pipe, and there are no screw ups because everyone uses the same standards and terms. Same reason you can order a Tee with 3 diff size holes and always get the right piece.... STANDARDS. All you need is a measuring tape to order the proper piece if you have a sample in your hand.

EddieVBlueIsland fuck o mighty I finally realized that there is a difference between the two, until you pointed out that there isn't. very clever Capt.Plumber! 😆

Very weird

Agreed.

You are wrong and he stated it correct. How are you going to attach a piece of schedule 10 pipe to a piece of schedule 80 pipe if the OD are different? Just read a piping size chart, you will notice it.

Yeah, just the cans.

That made me LOL

If you were a good Westexaspipeliner you would know that sizing is different for pipe between 1/8'' and 12'' and above 12''...... a first year apprentice needs to know that for first block.

Yeah, I caught that too. Did he misspeak?

@@wsg4847 I think so because he was talking about tubes @ 1:48

Corey Lambrecht Your more likely to get a dumb stare asking for technical sounding stuff!

Conduit just means it's meant to hold something inside of it so the definition for pipe fits better than tube which is for structural purposes, but to include conduit the definition in the video should add that it can be for other things besides liquid or gas, like wires.

What if I use EMT? Then again there's IMC.

According to Jackson it's tubing if you're using it to build something and pipe if you're using it to contain something.

Maybe for the same reason that your car motor is an engine.

Maybe for the same reason your cement driveway is concrete.

We learned here that tubes are structural - a strengthening component. I was surprised too, but here's an expert telling us it is so. I guess the industrial boiler will be structurally strong if it uses tubes. A refrigerator is also made very strong by its structural capillary tubing. Women are made strong by their fallopian tubing. The London Underground has never fallen down, unlike its infamous bridge. This is because it's a tube.

Obviously his driveway would be concrete. Cement is only part of the story........

Grateful Dude cement driveway you say never seen that before

Mathias Dreßke so like the smoke going up the rohr used to be people. Is that correct ?

Can you do a video so I can know what's right?

madfatchickkilla Not what your GF says...she smokes tube like it's half off at the dollar store.

myblueshades This and thank you

Thank you crazy Jesus;)

Sounds like you're referring to copper pipe. The rules change.

electrical is different

You are clueless. Don't try to educated people in a subject you are clueless about. A tube does not become a pipe as soon as it transports a liquid or gas.The MAIN 4 or differences are ALL about how they are CLASSIFIED by SIZE, THICKNESS AND INTERNAL OR EXTERNAL MEASUREMENTS.Key words being classified and standards. Anyone with a basic understanding of pipes and tubes, or ASTM classifications and standards would know this.

@@JohnSmith-yq7gu You are Exactly correct. I work for Ercolina USA and we provide all of North america with Machines that bend Pipe and Tube. Bob You are completely wrong sir🤣

But then you would never learn anything? And YT would cease to exist!