1. PIPA BESI / PIPA BAJA (STEEL PIPE CARBON STEEL) Pipa Air (Pipa Galvanis/Pipa GIP/Steel Galvanized Pipe) Pipa Hitam (Pipa Gas/Pipa SGP/Pipa Black Steel Pipe/Pipa BSP) Pipa Tiang Pancang (Pipa Spiral Welded) ASTM A252 Grade 2 (Grade B), Pipa Air AWWA C200, Pipa Gorong gorong Pipa Seamless Schedu...
