The Black and Mild Steel-M.S. Pipes are used for transmission of water, gas, oil, and air. Khanna Industrial Pipes Pvt. Ltd manufactures Black and Mild Steel-M.S. Pipes. Khanna Industrial Pipes Pvt. Ltd is an ISO 9001 - 2000 certified company. The Black and Mild Steel-M.S. Pipes are produced from low - carbon mild steel on automatic tube mill by high frequency induction welding process.