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Thread: Pipe Clamp Compilation.
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3rd May 2011, 10:40 AM #1SENIOR MEMBER
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Pipe Clamp Compilation.
Just for others who are looking to do some pipe clamps but perhaps daunted by the pipe changes (i dare say some stuff was changed before i was born) and there are quite a few younger than me nowadays, and so as to find everything in one post.
***Even if you have purchased a newer type of Irwin clamp as Kyle and others have mentioned elsewhere, You'll have no need for threading information, however the actual pipe information will most likely apply. The downside or limitation to this style of clamp leads to the next comment.
*** From Bushmiller and others, The threaded styles of clamps can be extended by the use of double ended collars between the heads. IF you have a thread cut on both ends of your tubing. Using conection / collar along the lines of this union joint.
From wikipedia about the BSPT thread;
"The size number was originally based on the inner diameter measured in inches of a steel tube for which the thread was intended, but in the modern metric version of the standard is simply a size number."
British standard pipe thread - Wikipedia, the free encyclopedia - here.
Most of the time these days even the steel suppliers are dealing with only the ND or DN (nominal diametre) or NB (nominal bore) in Australia. The above has and seems to create a bit of confusion and communication where the crossover happens. "Just get a bit of ol' 3/4 gal waterpipe, she'll be right..." they say, is kind of there, but when you ring the suppliers and ask for the same and get something along the lines of " We only do metric now, nothing suits your purpose".
So using the chart on the wiki link above you can see the 0.75 (inch) thread, or 3/4 bspt, is 14 threads per inch, 1.814mm pitch, 1.041 inch or 26.441mm thread major diametre, so thats the thread, finer details of the angles and shapes etc. are in the link also. Continuing to use the chart we move across to the recomended pipe for this threading, DN of 20, OD of 26.9mm or 1.06 inch with a thickness of 2.6mm. (So the old 3/4 ID expressed water pipe is externally 1" OD....)
What a drama eh, we ask for what we think is right (and one time it was 3/4 "internal dia." pipe), and now isn't in context (because we now measure the OD ), then get told the context we're using isn't compatible with current systems of measurement (imperial 3/4 ID used as an OD reference to measure metrically an OD wont work), do a bit of digging and get some research done, and find out they had what you asked for, but neither knew what the other was talking about. No wonder some give up. I almost did.
So in a nutshell. 3/4" gal waterpipe is sold as DN(or ND or NB) 20 Medium grade (or 2.6 wall or a "blue" colour code, not to be confused with "blue" uncoated steel) Gal pipe. And the threading used is 3/4" BSPT.
Note: "Blue" or untreated/coated steel can also be used and is ever so slightly cheaper than the Gal, the Gal is a personal choise.
Whew. So got my 4 Carba-tec clamp heads @ $12 or so ea, now i got my pipes @ $38 and dropped em off to my BIL (ex plumber) for threading @ $zip (worst case 6pack goldies). Hopefully this week i'll have a piccy of some nice 1100mm pipe clamps an 86 bucks spent.. Cheapy solution to finish my benchtop so i can reassemble my lathe and sort it out to get back into turning.
For completeness, i'll add some stuff, there are a couple of cheap options for threading die's and handles, ridgid do a ratchet handle the Oo-R to suit the die commonly currently found on ebay the link to it may decay Ebay Ridgid die so the part # 66330 is the 3/4" 14tpi hss die to suit the handle.
This seems from what i've seen the most common purchased solution to cutting the thread, also Trefolex cutting paste (or aerosol) as the lubricant.
Some of this stuff wont apply to everyone, your mate at the steel shop is an old boy, or he's switched on, or you have a sample clamp head, or your brother in law is a plumber, or your next door neighbour has an old set of threading dies, or you can buy em prethreaded. I just wanted to see all the info in one spot or post along with the relevant explanations. It might help others.
Neal.
PS: not associated with any of the companies, or items, or people within.
PPS: I used Earlybird Steel in Brisbane, and checked out others whitch had what i was after on their websites when i knew what i was looking for. They were closest to me. Really hope this helps someone/anyone else out. Happy Clamping.
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3rd May 2011 10:40 AM # ADSGoogle Adsense Advertisement
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4th May 2011, 07:21 AM #2
Irwin do a pipe clamp set that don't need a thread.
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4th May 2011, 08:30 AM #3
Neal
Excellent information. Thanks.
If you have had your pipes threaded both ends you can extend them ad infinitum with sockets. I do that in preference to having very long cramps. I once had a set 3m long, but they got cut up!
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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4th May 2011, 09:27 AM #4SENIOR MEMBER
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Thanks guys, i will add that info as well into the original post as dot points .
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5th May 2011, 06:03 PM #5SENIOR MEMBER
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And when your done. final cost for me was about $100. Finishing touch of buying joiners to use as thread protective caps on far ends yet to get.
Neal.
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14th May 2011, 11:51 AM #6SENIOR MEMBER
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And for the finishing touch, found a local hardware that still stocks gal fittings. Got 4 x 3/4" "sockets" or joiners for $1.60 each. They protect the threads not in use and allow my 4 to become 2 when the need arrises or a single long.
Neal.
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18th May 2011, 03:07 PM #7New Member
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On the pipe clamp front - was after some assistance/advice...
Have come in possession of some of the below Bessy 3/4 inch pipe clamp heads and am now looking to acquire the appropriate piping
[ame="http://www.amazon.com/Bessey-BPC-34-4-Inch-Style-Clamp/dp/B0012YNJRO/ref=sr_1_1?ie=UTF8&qid=1305691378&sr=8-1"]Amazon.com: Bessey BPC-34 3/4-Inch H Style Pipe Clamp: Home Improvement[/ame]
I am based near the airport in Sydney and called a local steel mill who have some gal piping to do the trick but do not have the capability to cut the tread (c. $20 for a 6m length + cutting fee). They put me in touch with someone who can cut the threads but his quote was c.$180!!! for four threads.
Just wondering if anyone else in/near my locality that may have any experience on a more cost effective measure.
I noticed that McJing have some but are out of stock till July.
Thanks in advance.
mw
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18th May 2011, 06:46 PM #8SENIOR MEMBER
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As you've just done, try the forum, quite a few guys have or know someone with threading tools or equipment if you don't wish to get your own. Failing that try contacting your nearest / nearby TAFE college that does the plumbing tradecourse. Have a chat to the teachers, they might be willing to do a "foreigner" for you, might be cheaper than the quote you got. Thats a couple of leads to chase at least, good luck.
Neal.
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7th December 2011, 12:36 AM #9New Member
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Cheers for this thread Neal.
It's just what I was looking for. I've been tearing my hair out trying to understand all this stuff. I got one set of the Rockler pipe clamp heads from Carbatech on the weekend and I've already purchased the die head from ebay ready to cut my own threads. I got some 3/8 inch copper pipe from bunnings as a test and found it completely undersized. With hindsight now I understand that its the outside diameter whereas I need 3/8 bore. I went again to Bunnings with the clamp head and found that they have 20mm threaded galv pipe (both ends) which seems to fit the clamp head perfectly. But for a 1.5m length it was around $30. So once I get my die holder in the mail I'll try the supplier you mentioned and let you know how cutting my own threads goes.
Thanks again,
Midge
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7th December 2011, 10:30 AM #10
Hi Neal,
Good information. Well done. Thanks.
Cheers
Pops
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13th January 2012, 06:53 PM #11Senior Member
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Thank you for this compilation - great info! Probably it would be good to have it in the forum library... It helps a lot when buying/planning to buy pipe clamps and appropriate pipes.
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13th January 2012, 08:24 PM #12
For threading I was able to buy a threading kit and pipe vice for about 80. Did my 8 pipe clamps in an afternoon.
Just use a sh*t load of cutting oil, and a lot of elbow grease!
https://www.woodworkforums.com/f11/go...ml#post1064275
I got my kit and vice from ozmestore1 on eBay
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13th January 2012, 09:10 PM #13
I generaly try and find the old Australian "Paulcall" brand clamps, you can find them in garage sales etc nice and strong, square to the pipe etc and usualy about $5 a pair. Picked up the pipe die on ebay for $10 and just turn it with my 24" stilsens.
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13th January 2012, 09:24 PM #14Novice
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I went through all this too, last year, in Brisbane, oddly enough. The pipe was easier to get (once I had figured out all the info neatly summarised above) than the threading. Cheapest I was quoted was $7/threaded end and that started to eat into the savings. I went the ozmestore die route as well, following some advice on this forum (from Claw Hamas, I believe). The results with pictures are summarised in a thread here somewhere. It was fun, in a masochistic, character-building sort of way and one can't argue with the price!
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