Pipa baja Seamless ieu perforated ku sakabeh baja buleud, sarta pipe baja tanpa weld dina beungeut cai disebut pipe baja seamless. Nurutkeun kana métode produksi, pipa baja seamless bisa dibagi kana panas-digulung pipa seamless, tiis-digulung pipe baja seamless, tiis digambar pipe baja seamless, extruded pipa baja seamless, pipe jacking, jsb