20000 psi unit

Hello all, Im in search of a 20000 psi machine. ive landed a job with a drilling company and the job requires me to blast cement sludge that is hardened and compacted in a 30 foot pipe that is 4 inches in diameter their is 140 pipes waiting for me...This is a ongoing contractual service agreement so it would benefit me to invest in a machine that will handle the job...
Ive got two Hotsy 1260's in one of my mobile unist @ 3000psi, but didnt even break much away. tried a rotary nozzle and spinner end also a 0 degree tip. With no success...

Any suggestions or advice.

Thanks

Richard
Cappuccino Auto Spa & Mobile Wash
Canada

Chemicals. Water jetting sounds like a good idea...but it's meant for demolition. I'd hate to find out the pipes can't handle the pressure after purchasing that sort of equipment. It will run you around $30K and then another 10k in PPE. I'd look into some acids that can break your cement bonds. 20K psi might be cheaper in the long run, so research it, but I'd suggest you start small and slow with chemicals!

mabey a 10000psi machine would work?

I believe the chem I used to get cement off HVAC coils would work for that.

Speedy Clean Concrete Dissolver

I would do some searching on the internet and read that site that Russ posted and then start calling those companies, they should know if high pressure water blasting will do the trick and if not.

Those pipes are hardened so I don't think that the hydroblasters will affect them unless you aimed the blaster directly against the metal with a smaller tip, look on you tube, there are lots and lots of hydroblasters used to clean paint, epoxy and other coatings off ships, steel water and chemical tanks for re-painting and for rust removal so I think you would be ok.

At the refinery they would use hydroblasters to clean the carbon and chemical residue out of the heat exchangers and tube bundles with pressure only, no chemicals and the tubes looked like schedule 80 pipe to me but I would think that they would be hardened to handle the constant temperatures and pressures and chemicals 24/7. When a tube ruptures when in use, they take the huge steel doorway off and find the leaking tube and plug both ends and put the unit back into service, I don't think that they ever replaced those tubes as they are set in a huge assembly with hundreds of other tubes.

I think that chemicals would take too long and possibly affect the metal unless you had the pipes hanging where the chemical kept on working downward which I don't think would be feasible.

That is a good idea and sounds like a great opportunity, I would call companies that hydroblast and get their opinions on if they think it would work and the time/materials per hour range would be.

Let us know what you find out.

Good luck.