Hot-dipped galvanized pipes are excellent candidate for most processing techniques. Welding, torching, or abrasive sawing galvanized steel is not recommended without proper protection and adequate ventilation. Galvanized pipes are A36 hot rolled steel, or mild steel, pipes that have been dipped into a molten zinc coating process (ASTM A123). Hot-dipped galvanize (HDG) can be identified by its crystallization pattern, also known as “spangle” on the surface of the material. Great corrosion resistance, excellent candidate for outdoor use or exposed environments. Common applications include potable water and drainage, fencing, posts, railing systems, and low pressure plumbing.
Most common type. Good welding, forming, & strength. Low cost structural steel.