... treatment:powder coating, painting, spraying,etc OEM cnc cast iron valve body Specifications cast iron ... aluminum, zinc etc2sandgreen sand, sodium silicate sand etc3mahinelathe, CNC, drilling machine, milling machine, boring machine, planting machine, ... spraying, galvanization8standardJIS, ANSI, DIN, BS, GBOEM and Customized Service1.Quality guarantee• Chemical checking• NDE after rough machining ...