English (language) A castle is a fortress. It may also have a residence, and many castles were residences of various lords and nobles, but a castle isn't required to be a residence, as many were built to be forts guarding militarily interesting areas. A mansion is a large, opulent residence. It may have a fairly high degree of security and some level of fortification to protect the people living there, but it is not intended to be a strong place with strategic military importance. Written Jun 12, 2015 â¢ View Upvotes.
A plug weld is used to fasten two pieces of metal together using a welder. When joining the pieces, a hole is drilled into the top piece and it is laid over the bottom one. A weld is then made by running a bead inside of the drilled hole, thereby holding the two pieces together.
Galvanized Vent Hole Plugs Tapered plugs that can quickly and easily seal vent holes in steel rails or fabricated steel. Click to view Vent Hole Plug Catalog Whenever fabricated steel has to be galvanized vent holes should be present to allow liquid zinc and pressure to flow freely throughout the confined spaces.