... 3.Thread standard:ISO,DIN,etc 4.Thread type:G,R,NPT,BSP 5.Nickel plated brass compression ... Corrosion resistant, not scaling, no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4 ... . Transport and discharge for industrial water and chemicals.3. Piping system for purified water and drinking water. ... system for other industries and agriculture. Brass compression fittings