New galvanized what ? -Are you talking about galv steel framing ? If so it need no priming. Steel studs are within the wall and do not need any kind of primer or paint.
Depends on the water quality and what type of galvanized piping was used
Metal LENOX
Galvanized or stainless steel screws should be used for treated lumber to prevent corrosion and ensure a secure hold.
"Drywall primer" -Yes, -it's called exactly that -right on the can !
percussion
No. Galvanized pipe is what they used to use, and now should either be replaced with modern type of water pipe such as PEX or copper. COMMENT: Complete agreement. Galvanized served it's purpose and did bring water into a lot of people's homes for a lot of years. That was then, this is now. Today, it would be a dead last choice for a plumbing system.
Galvanized or stainless steel bolts are recommended for securing deck posts due to their resistance to corrosion and durability.
As long as the surface is clean and dull, then either an oil or acrylic primer can be used to cover oil-based paints.
Galvanized lag bolts are recommended for securing deck posts as they are corrosion-resistant and provide strong support for the structure.
Hot-dipped galvanized or stainless steel nails are recommended for use with pressure-treated wood to prevent corrosion and ensure durability.
1 1/2"-2 1/2" 8d galvanized finish nail. length depends on thickness of item you're securing
Pvc, Wirsbo, Copper, galvenized, pex, or Polyethylene