Re: of boilers and things/nomenclature

At 09:55 AM 4/16/02 -0700, you wrote: >By their definition, it would appear that NO conclusions can be drawn as to >actual ID or OD from nominal PIPE sizes. >royce Royce, This is true of steel but copper and steel pipe have two different standards. Copper pipe is _always_ 1/8" over nominal

Re: of boilers and things/nomenclature

Thanks for the lead Harry. By their definition, it would appear that NO conclusions can be drawn as to actual ID or OD from nominal PIPE sizes. Using their example, 1 1/2" schedule 40 pipe has an OD of 1.90" and an ID of 1.61. Where's the inch and a half? (rhetorical question only). I think I

Re: of boilers and things/nomenclature

At 07:40 AM 4/16/02 -0700, you wrote: >OH S**T ! Just when I had committed it to memory! >So, what's the rule ? >I LOVE this list ! Why? We keep contradicting ourselves! Go to J. G. Braun is an old line seller of architectural metals such as handrails,

Re: of boilers and things/nomenclature

Harry Wade wrote: > At 08:18 AM 4/16/02 -0400, you wrote: > >Tubing is measured by the ID; Pipe is measured by the OD, > >Jim > > Jim, > I think you've got it reversed. > Regards, > Harry OH S**T ! Just when I had committed it to memory ! Fortunately, I'll forget the rule by tomorrow and

Re: of boilers and things/nomenclature

Jim Curry wrote: > Tubing is measured by the ID; > Pipe is measured by the OD, Thanks for your answer, Jim. I think I've got it. (That stupid feeling has left me). But now for the next question : what's the difference between pipe & tube ? royce in SB

Re: of boilers and things/nomenclature

At 08:18 AM 4/16/02 -0400, you wrote: >Tubing is measured by the ID; Pipe is measured by the OD, >Jim Jim, I think you've got it reversed. Regards, Harry

Re: of boilers and things/nomenclature

Tubing is measured by the ID; Pipe is measured by the OD, so 1-1/2" pipe will always be 1-1/2" OD but will have a smaller passage as the schedule goes up. "Schedule" is the common nomenclature for ordering pipe, i.e.: schedule 40, 80, 120. Tubing is reversed, ID remains constant as wall thicknes

Re: of boilers and things

"Ciambrone, Steve @ OS" wrote: > Mating Plumbing fittings! > > Steve dhh ! I knew that ! feeling stupid royce

Re: of boilers and things

By varying the I.D., the O.D. remains the same and allows all three series of nominal copper pipe (M, L, and DWV) to share the same elbows, tees, reducers, etc. Copper TUBING is another story... Mike

Re: of boilers and things

It's so that the fittings will fit any thickness. Mike Eorgoff - Original Message - From: "Royce Woodbury" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" <[EMAIL PROTECTED]> Sent: Monday, April 15, 2002 4:02 PM Subject: Re: of boi

Re: of boilers and things

At 02:02 PM 4/15/02 -0700, you wrote: >So Harry, I can understand why a so-called 1 1/2" tubing would be 1 5/8" OD if >the tubing has a wall thickness of .0625. But are the other wall thicknesses >still 1 5/8" OD, letting the ID vary ? Seems an odd way of doing it. Royce, Yes, it does but th

RE: of boilers and things

Mating Plumbing fittings! Steve > -Original Message- > From: Royce Woodbury [SMTP:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 2:02 PM > To: Multiple recipients of sslivesteam > Subject: Re: of boilers and things > > So Harry, I can understand why a so

Re: of boilers and things

So Harry, I can understand why a so-called 1 1/2" tubing would be 1 5/8" OD if the tubing has a wall thickness of .0625. But are the other wall thicknesses still 1 5/8" OD, letting the ID vary ? Seems an odd way of doing it. It would seem that the ID is the most important "characteristic" of tu

Re: of boilers and things

To Royce, from Arthur in Mexico City Do not go to thinner walled tubing because there is a safety factor involved. The effect of steam at 40 psi is not the same as air at the same pressure. Steam debilitates a pressure shell. The slightly more btu's required to heat up a Type M or L copper tub

Re: of boilers and things

At 07:12 AM 4/15/02 -0700, you wrote: >So here's a question to "pick things up a little". >I have a piece of boiler tubing from a kit 1 1/2" in outside diameter with a >wall thickness of about .035". Royce, Even if you did go to a thinner wall thickness (which would be difficult because what

Re: of boilers and things

Interesting. Assuming your thicker copper tubing has the same OD, then the extra copper will be on the inside. So there will be a bit less water. Now, copper has 9 times the weight of water but only one-tenth the specific heat. So more copper will actually reduce the heat-up time !!! All other thi