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#4673095 - 02/21/18 11:19 AM Cutting Cast Iron Pipe
krismoriah72 Offline

Registered: 02/16/09
Posts: 1395
Loc: wv
On my property there are several miles of abandoned natural gas pipe left over from the 50s and 60s. it is all unaccessable to electric and hauling cutting torches is not feasible. I want to cut it and make a fence for another part of my property.

I have come up with a few solutions.
1)Pipe Snapper- expensive, manual operation.
2)Cordless Sawzall- i probably wont get much done.
3)Cordless grinder with cutoff wheel..same as sawzall.
4)Small portable torches..bottles wont last long.

5) 2 stroke Concrete Saw with cutoff wheel.

Number 5 wasnt on my radar but i asked around and a few guys have done it.

I am trying to stay below $500 on this budget.. as of right now I found a couple of concrete saws that I can get for $400 to $500. I do also think that after the project i can sell the concrete saw for about $50 less than i paid for it..

Number 1 seems to be the safest bet but i would have to order it i think, and i doubt many people would buy it after i was done.

All in all I expect to make 300 or more cuts that would give me enough for my project.

What say you?

#4673114 - 02/21/18 11:31 AM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
George7941 Offline

Registered: 05/10/05
Posts: 2092
Loc: Toronto, Canada
The pipe snapper does not give you a very clean cut, if that matters for your project. You should be able to rent a concrete saw.
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
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#4673115 - 02/21/18 11:32 AM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
andyd Offline

Registered: 09/25/04
Posts: 6739
Loc: Marshfield , MA
I've cut 1 1/2 cast iron steam heat pipes with a Sawzall. What diameter pipe? Is there a risk of a grass fire? Can you chop it into manageable lengths and haul it to where you cut it up efficiently?
'16 Camry LE STP synth 0w20 and STP filter.

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#4673118 - 02/21/18 11:32 AM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
zzyzzx Offline

Registered: 05/18/12
Posts: 4225
Loc: Baltimore, Maryland, USA
No electricity to use an angle grinder???

#4673149 - 02/21/18 11:55 AM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
Stelth Offline

Registered: 02/24/11
Posts: 1997
Loc: California
If itís gas pipe, itís probably not cast iron. If itís rally cast iron, scissor snaps would be the quickest. But itís probably steel, in which case the big cut-off saw would be prett hard to beat.
Experts are often wrong, but rarely in doubt.

#4673178 - 02/21/18 12:10 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
Kestas Offline

Registered: 06/04/02
Posts: 12164
Loc: The Motor City
I agree with Stelth. It's probably mot cast iron. Cast iron is easy to cut.

Consider hauling a generator to the site. Then you can use just about any power tool.

#4673185 - 02/21/18 12:22 PM Re: Cutting Cast Iron Pipe [Re: Kestas]
krismoriah72 Offline

Registered: 02/16/09
Posts: 1395
Loc: wv
Originally Posted By: Kestas
Consider hauling a generator to the site. Then you can use just about any power tool.

Dang that is a good idea.. i never thought of that because i have one of those wheelbarrow size champions but my buddy has one of the small ones about the same weight as the concrete saw. Not sure how cool he would be with me borrowing it and the cost to get the same as his, is about $500..but great idea.

#4673226 - 02/21/18 12:56 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
PimTac Offline

Registered: 03/04/17
Posts: 3003
Loc: Soviet State of Washington
Since itís from the 50ís and 60ís, it could be cast iron or what was called black iron then. That would be brittle so a cutting saw is better. Snips will fracture rather than cut cleanly if they even cut at all. Hopefully the pipe is in good condition. Any rust through will make for a short life as fencing.
2017 Mazda CX-5 GT. Idemitsu 0w-20 factory fill. Factory Denso filter.

#4673249 - 02/21/18 01:13 PM Re: Cutting Cast Iron Pipe [Re: PimTac]
krismoriah72 Offline

Registered: 02/16/09
Posts: 1395
Loc: wv
Yes i would say its old black iron. I have two bridges made from it and my neighbor has one as well..i think a grinder with cutoff wheel which i already have..mated to an inverter generator which i kinda want anyways would be a good way to go about it.

#4673283 - 02/21/18 01:37 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
tom slick Offline

Registered: 05/26/03
Posts: 9277
Loc: Central Coast, Calif.
Iíd use the concrete saw. Plenty of power and weight. Youíre going to fight with everything else to make cuts.
You get what you pay for...
So keep in mind how much you paid for this advice.

#4673309 - 02/21/18 01:51 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
IndyIan Offline

Registered: 09/23/08
Posts: 8765
Loc: Ontario, Canada
Whats the diameter? And how long are your pieces? Maybe a couple knicks with a cordless angle grinder and break it?
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#4673321 - 02/21/18 01:59 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
JohnnyJohnson Offline

Registered: 10/22/09
Posts: 2145
Loc: Wet side WA
Several miles you have a hug piece of Property.
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#4673326 - 02/21/18 02:04 PM Re: Cutting Cast Iron Pipe [Re: IndyIan]
krismoriah72 Offline

Registered: 02/16/09
Posts: 1395
Loc: wv
3" pipe. Theres probably a few miles of it.

I have power outages where i live all the time so a small inverter generator will be used eventually..

I found a guy selling a husqvarna knockoff concrete saw for $200. He also has a Stihl for $400.

So i can either buy the stihl and resell when im done..or get an inverter and keep it.

On the cordless route those would lose alot of value if i bought new and sold afterward.

I dont need any of these tools other than the job at hand..except the inverter gen.

The stihl concrete saw weighs 23lb the small inverter generator weighs 50lb.

Most of the pipe is across creeks and small streams so i will cut into 5 ft sections and haul by hand to access roads.

Worst case scenario the recycling center is paying $12/100lb so if i dont like it theres money to be made.

#4673350 - 02/21/18 02:25 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
NYEngineer Offline

Registered: 12/12/06
Posts: 1424
Loc: NY, NY
I had to cut a cast iron vent pipe once when I was renovating a house. First cut was with a sawzall. That was insane. Second time, I borrowed a pipe snapper. Worked awesome. in and out.

#4673353 - 02/21/18 02:29 PM Re: Cutting Cast Iron Pipe [Re: krismoriah72]
Michael_P Offline

Registered: 08/20/07
Posts: 1778
Loc: .
Gas powered cut off saw with aluminum oxide wheel.

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