| I am coded as a welder, but in truth no you dont have to have a coded welder do the work just as long as you are good at welding. If the boiler is for your own use it is Ok to just have it hydraulic tested and live with that. In practice I would always get a ticket for a boiler to be on the safe side.
I always pressure test three times at any pressure up to 400 psi in steel.
Steel boilers by thier nature are strong as long as the formula is followed to the letter. Stays are the weakest point and need to be done about spot on. I use a combination of MIG and stick on boilers. The flue tubes are rolled in above two inch to allow them to be replaced.
Copper boilers are on the other hand are hard work simply for the heat that has to go into them to ensure a good solder joint. Easy flow 2 is the best silver solder i know of for flowing well. |