Expired oil field pipe?

[Wellydeckhand]

Hello,

My recent finding have made me found a dozen expired oil rig pipes...... these pipe look very tough but I dont know if we can use it to a certain extend within boatbuilding?

They come in various diameter....... from 1.5 inch to 3.5 inch any use?

Thanks

WDH

[solrac]

an advice: DO NEVER try to torch them until you can be sure there is no any residual oil on the inside!!!! even if the pipes had been out there for long time...
there is an established proceed method to degasifying on the means of a close cycle continuous recirculation of water to some container with a pump, or filling them with some inert gas (Nitrogen or CO2) until you can obrtain certain measures with an explosimeter
the basic numbers you must obtain on the explosimeter screen to surely "work" those pipes are:
Free Oxygen on the inside of the pipe less than 15% (normal atmosphere is 21-22%) (Only way tapping both ends before injecting inert gas)
LEL (Lower explosivity level) > 10% (no more than 100ppm volatile gases diffused on air)
Some other residual gases pipes can have are dangerous to human health... H2S (sulphydric acid) on concentrations upper than 150ppm (normally found on diesel piping) are on the live-or-death exposition limits...

good luck (good luck? better throw them away fast...)

[Wellydeckhand]

These stuff is clean and sand blasted........ can we actually utilised it in part of boat building? Beam?

WDH

[nero]

You can weld it into a truss and use it for handling the steel plates of your new project.

Handrails? Wind the steel pipe in rope and dope it for a more traditional look.

[Wellydeckhand]

Yup....... I have an offer for 250 pipe of such origin....... wonder if I can make a stronger boat by this component...... They are stroooong metal pipe with highest cert., hope it is a viable option.

WDH

[nero]

If it is cheap, buy it. There is always something you can use if for.

[Wellydeckhand]

Thanks........ I am still thinking for beam construction

[SamSam]

I remember reading something about using them for dragster and race car custom chassis back in the 60's. As you said strong, very good material and possibly machined?? so the size tolerance and finish was excellent compared to any other tubing. Sam

[Wellydeckhand]

The pipe have been try for making sword for the local........ very hard to cut and roll it flat.......... to stamp and even under heat........ good solid result .

For boat you cant use very stiff material that why you have marine grade......... I was wondering if we can build internal superstructure with this material and hull in marine mild steel......... this can proviede both aspect with different strength.

WDH

[gonzo]

Some people used to build multichine hulls with pipes for chines. They welded the plates to the pipe which gives a rounded edge. It is supposed to be stronger and a round edge tends to chip paint less.

[Wellydeckhand]

Yes, you are right, locally I get all sort of ideas from local builder....... these oil pipe tnd to be material stronger and good replacement for alot of stuff..... the plate still need to be mild steel.......

Thanks

WDH