... , steel, stainless steel, brass, copper, bronze, aluminum, zinc etc2sandgreen sand, sodium silicate sand etc3mahinelathe, CNC, drilling machine, milling machine, boring machine, planting ... , galvanization8standardJIS, ANSI, DIN, BS, GBOEM and Customized Service1.Quality guarantee• Chemical checking• NDE after rough machining• Machanical testing after heat treatment ...