Hi, I have a set of plans here from a well respected NA from USA that is specifiying SS sch40 pipe nipple welded to hull plate. I have been...
Hi, If you can figure out the way it was originally plated by weld seams and a bit of CSI replace each one as you remove rotten one by one. Plate...
Hi, I / we give all welds a "tickle up" with the grinder. Run over bead lightly to knock the edges ,etc. off. Once you blast and paint it looks...
Hi, nothing wrong with SS to mild steel weld. Its common. Much better than mild steel nipples, just keep an eye on your zincs and keep plenty of...
Hi, Ok let me just say I have never stated that in the commercial world that acids are used for this application. I said ships are designed with a...
Hi, Sandblasting is the best way yes but this way I suggest is a reliable long term option . I know this as fact....
Here you go , National Association of Corrosion Engineers (NACE) Standard RP0178. 4.3.4 CORROSION REMOVAL. Abrasive blasting is the preferred...
Hi,You are forgeting the removal of the thin black Magnetite rust film found below Iron Oxide film on rusted steel. Iron Oxide is a higher...
Hi, Sorry about the quote mess up. Please explain how acids complicate things? Acids are widely used in our industry. Also post #9 is a...
NZ_Shipwright
Hi, I have not used POR15 . Cant beat the tried and true method. I have been working on commercial workboats for sometime now and there is nothing...
Hi, Good advice welder/fitter. A 40ft Tug ! good size project a little 90 amp Mig will be struggling . Dead right on the 7018 , we use nothing...
Hi, Apex you would improve your results on your Museum ships if you followed our procedures. By applying the Phos after needle gun, buff with cup...
Hi, We have tried different potions over the years Fertan is one of them. We get the sales reps from all over telling the story about how "their"...
Hi, Yes sorry clean with water. Unsure about dilution ratio but it comes at around 40-50% from supplier already to go. Its called "Rust and scale...
All stainless yes
Yes , Threaded bolt holes in flange which you bolt your flange and v/v to. Does not bolt through the hull. Its not as good as a Nipple type in my...
Hi , Dont hit anywhere with a grinder as you dont want to reduce plate thickness. Use a chipping hammer to remove scaling then use a wire cup...
Hi All first time post, We use 316 SS pipe nipples schedule 80 welded to hull plate. PTFE tape and Loctite 567 a SS ball valve on. (locking type)....
