N. Gandhi and Co. Offers Hastelloy Balls for Valves and Pumps. N. Gandhi and Co. Is an ISO 9001 certified company. The company manufactures high-precision steel balls, non-ferrous and non-metallic balls including ceramic, glass and plastic. The Hastelloy Balls for Valves and Pumps is resistant to strongly oxidising agents such as chlorine, nitric, acetic, formic, phosphoric, sulphuric and hydrofluoric acids, zinc chloride and ammonium solutions, water-based solutions containing chlorine or hypochlorite and acid solutions of ferric and cupric salts.