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Pipe clamps

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Mark Kw

05-09-2002 07:19:09




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I know these are mostly associated with cabinet makers but I use them a lot in the welding business too.
I have been looking around for some and can't find any decent ones. I have a couple standard jaw ones my dad gave me, can't quite make out the name but I think it reads "Pony". The screw end is cast iron and fits a 3/4" steel pipe thread. The slide end is also cast iron but has a series of spring loaded steel washer plates that grab the pipe when pushed away from the screw end. All the new ones I have found are made in China and have a single spur type lock on the slider that don't hold for crap and chews the pipe up if it does catch.

I'd like to get more of the standard jaws and also some deep jaw ones. I missed a whole set at the auction last weekend and did not get a chance to look at them closely to check the quality and brand name.

I have some bar clamps, two with an I-beam looking bar and one with a T-channel bar. These are nice and allow for higher clamping force but are not easily extended or shortened to fit the job. The sch 40 3/4 pipe works decent for most jobs but if I can get some good quality new clamps, I plan on buying several lengths of new pipe in sch 80 or 120 if I can get it. I keep some short lengths around from 12" to 36" for the tight spots. Most times, I have 48" pieces of pipe threaded both ends that allow me to extend the clamp by simply moving the slider onto the extra piece of pipe and using a coupling to connect the pipes.

Where can I get these clamps in a high quality version in both standard and deep jaw?

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rednekelmo

05-10-2002 18:42:18




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 Re: Pipe clamps in reply to Mark Kw, 05-09-2002 07:19:09  
I bought some at lowes about a year ago,they had the pony's then. you may also want to check out a woodworkers supply store if there is one near you.They will be able to dazzle you with clamping options you didn't know existed that you suddenly can't stand to be with out.



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Ford Man

05-09-2002 15:17:31




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 Re: Pipe clamps in reply to Mark Kw, 05-09-2002 07:19:09  
Lowe's and Home Depot have them . 3/4" is around $ 10-12 if I remember right .

Some say to use black pipe and not galvanized . There is supposedly a slight difference in OD . I have used both with equal results .

Ford Man



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Rod (NH)

05-09-2002 09:58:44




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 Re: Pipe clamps in reply to Mark Kw, 05-09-2002 07:19:09  
Hi Mark Kw,

The clamps you are referring to are indeed the "Pony" brand name. They are made by Jorgensen and are available at the link below or from most woodworking supply outlets...even some decent hardware stores. Jorgensen also makes cast aluminum extenders for those same clamps that extend the working depth out to about eight inches. At that depth though, the 3/4 pipe will tend to bow quite a bit with a good clamping load, especially with a lengthy clamping distance. Perhaps that's why you are considering sch 80 and up...to minimize bowing?

I know what you mean about the lever style spur locking device. It doesn't work for crap.

Rod

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bill b va

05-09-2002 08:55:35




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 Re: Pipe clamps in reply to Mark Kw, 05-09-2002 07:19:09  

whats the outside diameter of 3/4 inch schedule 80 pipe ? might want to check before you buy some for your pipe clamps



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Mark Kw

05-09-2002 09:00:54




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 Re: Re: Pipe clamps in reply to bill b va, 05-09-2002 08:55:35  
OD stays the same with sch number, the ID varies.



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Roger

05-09-2002 12:06:25




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 Re: Re: Re: Pipe clamps in reply to Mark Kw, 05-09-2002 09:00:54  
You sure about that? I thought 1/2", 3/4" etc.
was indeed the ID, be it plastic, steel, copper
whatever...
Roger



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bob`

05-12-2002 09:11:33




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 Re: Re: Re: Re: Pipe clamps in reply to Roger, 05-09-2002 12:06:25  
no the outside remains the same sch 40 has sai 1/16n wall sch 80 1/8th these are not actual figures . some pipe we used in power plant looked like a 22 cal rifle barrell. Now boiler tube will change outside dim but another story



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Greg S

05-09-2002 12:56:14




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 Re: Re: Re: Re: Pipe clamps in reply to Roger, 05-09-2002 12:06:25  
Iron pipe size is nominal inside diameter, for example 1/2" IPS is .84 od, .622 id for standard weight pipe(sch 40). Extra strong(sch 80) is .840 od, .546 id. Double extra strong(sch 160)is .840 od, .226 id. the constant od allows fitters to couple pipes of different strenghts with standard fittings. Copper pipe,actually classed as tubing, is sized differently. 1/2" copper water "pipe" is.527 id, .625 od. the od stays constant for the different types, K, L or M.

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Roger

05-10-2002 12:22:38




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 Re: Re: Re: Re: Re: Pipe clamps in reply to Greg S, 05-09-2002 12:56:14  
Greg;
Thanks, that makes sense.



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