Dina industri baja, pipa baja seamless, salaku bahan pipa penting, anu loba dipaké dina widang minyak bumi, industri kimia, shipbuilding, shipbuilding, jsb Di antarana, pipa baja seamless 20 inci geus narik loba perhatian alatan diaméterna sedeng maranéhanana. sareng rupa-rupa aplikasi ...
Maca deui