Pipe cover
Pipe cover
(OP)
We are finishing a geothermal pipe system and on top of the insulation we are covering with galvanized steel sheet, unfortunately we found out that they are stollen inmediately. Does any one have experience with a solution to stop steeling other than contracting guards over 10 kmts every 100 mts. Some times we welded the sheets when we used calcium silicate, but now we nare using rockwool, a material that would melt if over heated, any sugestions?
pictures at www.geocities.com/simanmecanica , (under construction)
pictures at www.geocities.com/simanmecanica , (under construction)





RE: Pipe cover
http://www.welding-advisers.com/
RE: Pipe cover
back to the issue. Eh... melting Rockwool. What density are you using? would you consider other finishing option?
Base on the material used as mentioned by you, I assume you are insulating hot pipes.
You can either apply Foster mastic as a finishing. If indoor, you can consider Foster 30.36 & outdoor, Foster 35.00. there will be mesh involved in applying this. Or, get alum. foil with self adhesion on one side and stick it to the insulation materials as a fininshing.
There are pro & cons in whatever method or material you chose. For instance, if the pipe is vertical, then the above mentioned both option may be considered. If it's horizontal, I will suggest more of using the Mastic.
Oh yes, Fibreglass fabric may be a good option as well.
By the way, in which country do you require the material. I may be able to advise some suppliers for your consideration especially in asia.
Cheers
RE: Pipe cover
We are in El Salvador, in a 40 MW power increase project. All information is very welcome.
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One idea I had was to make them larger too and this idea was sumitted to the client but they did´nt like it
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Mike Halloran
Pembroke Pines, FL, USA
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That may slow down the thieves to somewhere near the replacement rate...
Mike Halloran
Pembroke Pines, FL, USA
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THANK YOU
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The point is, whatever shop is engaged to make the cover sections will probably have its own variation on a lockseam. Some but not all snap together and stay together permanently.
Some can be manipulated open again, given idle hands. So you would supplement the lockseam with solder. You will need a _very_ serious soldering iron; probably the kind you heat in a blacksmith's forge.
Mike Halloran
Pembroke Pines, FL, USA
RE: Pipe cover
Does any one know a modern system for soldeering, faster, more echonomical? I have 16 gauge galvanized sheet...
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On the other hand, it opens up the option of using a simple lap seam, closed by self-drilling screws and a few pop rivets.
Mike Halloran
Pembroke Pines, FL, USA
RE: Pipe cover
RE: Pipe cover
Mike Halloran
Pembroke Pines, FL, USA
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At 22 gage or 20 gage, it gets harder to cut with simple tools. Next time, if you are still limited to galvanized steel, buy that.
I thought about suggesting perforated metal (over foil) so it couldn't be used as roofing, but that would be useful for screening. Then I thought about perf with really big holes, or hardware cloth, or chicken wire, but the truth is that there's always a market for 'free' metal.
Except maybe titanium. They might leave it alone after trying to cut it.
Mike Halloran
Pembroke Pines, FL, USA
RE: Pipe cover
Let´s see:
Fiber glass................. it breaks
Belzona......................expensive
Other polymers...............????
Titanium.....................$$$$$$
Foster.......................????????
Galvanized steel+lockseam....no back support
Galvanized+MIG...............melts Rock Wool?
Galvanized+(other welding process)? Brazing?
Electric fence?..............dangerous
Screws and rivets............used right now, no result.
Friction stir welding........???
Leaves+twine.................(
10 meters long galvanized....hard to take home?
Good mind exersice
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Friction stir welding is an interesting process, but it involves rotation of a nonconsumable probe, sort of like an endmill with no teeth, and simultaneous exertion of huge side forces in order to produce friction. It's typically done on rigid thick slabs of metal in _very_ rigid machine tools. Not a field process.
Belzona and other liquid/ paste/ goo coverings have the sole advantage that they cannot be removed in a form that is of any use to anyone, includng poor villagers.
If they can cut the axial seam of a long sheet of galvanized, they can also cut it circumferentially to make it easier to transport. They might go to some effort to remove big pieces intact, so they need fewer seams in their shanty roofs.
I was serious about the leaves. Natives here in SoFla evolved dwellings roofed with palm fronds. They are surprisingly cool, durable and water resistant.
Mike Halloran
Pembroke Pines, FL, USA
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As for comments about expensive, it all depends on the project budget and what you are looking for. If cost is the main concern then maybe quality might be compromise.
If I don't remember wrongly, in the west Foster mastic or coating product is produce by HB Fuller. I wonder if you got the right contact.
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Remember that although we have insulation the surface temperature is about 50° C and the leaves would become brittle very soon.
Eastasia: please send your mail, you can find mine at the beginning at that website.
There is another similar project starting now and for that it´s time to do something.
I got to HB Fuller site and they didn´t answear yet, I´´ll try again...
Let me do some research on insulation wood encapsilated with Fibre glass...
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The pipe carries hot water correct?? and passes by the villagers? not for there use?
If you could strike a deal with the locals both could win.
Have them agreee not to vandalise the pipe insulation, and you will let them have unrestricted hot water from a single or two small taps.... Would a few gallons an hour be a prob?
If they continue to remove the sheets, remove the taps. they may learn the second time around...
Ken
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I am eastasia. I couldn't login as eastasia after my last posting. Had contacted the admin but no reply so far.
Anyway, you may sent me an e-mail at iheinsulation@yahoo.com & I will sent you my main from there.
I couldn't get to your website as upon clicking www.geocities.com/simanmecanica, it does not hyperlink over.
cheers
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