Drilling Galvanised Steel Tank

[Paulus]

I have just been out to look at a job where the customer wants a shower pump installing. She has a galvanised steel water tank that looks in vey good nick. I have never drilled one of these before as I would usually replace the tank but this one has been built into the top of the airing cupboard and goes part way into the roof space. I would have to basically destroy half the bathroom to get the damned thing out.

I propose using a hole saw, any tips/ advice guys.

 

[Gray0689]

i mentioned the q cuttewrs in earlier post they cut holes burr free, noi need for magnets or putty lol

here they are

https://www.cromwell.co.uk/QMX0451124B

And these can cut a galvanised tank
Bit thicker than sixes shown!

 

[kay-jay]

I cut a stainless steel stockpot with one. It had a much thicker wall than a galv tank

 

[Gray0689]

I cut a stainless steel stockpot with one. It had a much thicker wall than a galv tank

Stainless will cut easier than galvanised imho

 

[Micky T]

You need a top quality steel hole cutter, Bosch or similar

 

[Micky T]

I like that, if been plumbing for 48years but haven't thought of that one as a temp' although I always drain down cylinders by syphonige( mains filled hose pipe attached to copper pipe placed in cylinder and hose chucked out of window.

 

[WHPES]

I seem to think that a galvanised tank or unlidded plastic tank without byelaw kit does not meet legionella hygiene requirements so would be illegal to use for a cold supply for a pumped shower. (Perhaps this is just for commercial work - Please correct me if I am wrong)