Has anyone tried using EMT with pipe clamps?

[Scott Lurndal]

Electro-metallic tubing.

[Leon]

Thank you Scott.

Is that like the electrical conduit? If so, certainly not stiff enough to prevent the glued up from bowing.

[Scott Lurndal]

It is exactly electrical conduit, and there is no way it would work for clamping.

Flexible Metal Conduit (FMC), EMT, Galvy rigid (GRC), Intermediate Metal (IMC), Rigid Metal/Steel (RMC/RSC) and Rigid non-metallic (PVC).

[dpb]

On 5/31/2018 1:14 PM, Leon wrote: ...

Precisely...it's a nonsense thread from the git-go.

Nominal OD Sch 40 EMT OD

1/2" 0.840" 0.706" 3/4" 1.05" 0.922

so the EMT is almost a full 1/8" smaller diameter so clamps wouldn't clamp even if the wall thickness weren't such that would simply collapse it if did.

[russellseaton1]

the EMT. The gripping rings are chromed steel. The EMT is chromed or some kind of gray plating. Its slick. I don't think the rings will grip the s lick EMT pipe. So no clamping force. I don't think it will grip enough to even dent the thinwall EMT. It'll just slip.

OK. But my point is still valid. I don't think the grip rings will work o n the electro zinc plated coating. Too slippery.

[Clare Snyder]

They work fine on clamps that come with electrozinc plated "pipes" from the factory. If the tube is the right size they will hold - but EMT is not the same size as pipe, and is too flimsy -0 the grip plates will deform the tube.

[Clare Snyder]

Electro Metalic Tubing - AKA lightweight electrical conduit.

[Doug Miller]

Clare Snyder wrote in news:edt0hdl19fdiu4rioi9n8lha0qslbrdj7k@

4ax.com:

gripping rings are chromed steel. The EMT is chromed or some kind of gray plating. Its slick. I don't think the rings will grip the slick EMT pipe. So no clamping force. I don't think it will grip enough to even dent the thinwall EMT. It'll just slip.

coating. Too slippery.

Perhaps for some definitions of "just fine'. I haven't had good experiences using pipe clamps with galvanized pipe.

[Doug Miller]

OFWW wrote in news: [e-mail]:

It's the other way around -- I even listed the diameters above. The actual outside diameter of steel pipe is greater than the actual outside diameter of EMT of the same nominal size, in all cases.

[Doug Miller]

Leon wrote in news:LNWdnWswz5r1pY3GnZ2dnUU7- [e-mail]:

Electrical Metallic Tubing aka "thinwall conduit".

Very different stuff from RMC (Rigid Metal Conduit) which is similar in weight, size, and stiffness to water pipe.

[Leon]

Thank you Doug.

[Electric Comet]

depends

are you a clamp it hard to deal with any errors or other imperfections in wood or cuts or what have you

or are you a clamp it just to keep it together until cured

[OFWW]

Actually that is sort of what I figured based on the tools for each that I have, but I was going by the info on the HD site last week which seemed strange to me, but,,,,?

Anyhow, I tried it today, it was a no show. The emt is small enough that the tail stock would not grip it tightly. Given the nature of the design I thought it might come close, but it was a no show.

[OFWW]

One grips it so there is consistency down the full length of the joint, tightly. No room for imperfections, etc. Glue is not a filler.

[whit3rd]

Exactly. Both EMT (thin stuff) and conduit (thicker, can tolerate wet) are bending-grade tubing. Black iron pipe is not. Black iron is thrifty compared with structural steel, but not a lot weaker.