Pipa baja seamless anu perforated tina sakabeh baja buleud, sarta pipa baja tanpa welds dina beungeut cai disebut pipa baja seamless.Nurutkeun kana métode produksi, pipa baja seamless bisa dibagi kana panas-digulung pipa baja seamless, tiis-digulung pipa baja seamless, tiis-digambar kelim ...
Maca deui