1. material: grey iron 2. strictly produced to EN877, ISO6594, ASTM A888. 3. painting: epoxy or anti-rust paint Our products are produced strictly in accordance with different standards as ISO 6594 , ASTM A888 , EN 877 etc, Hubless Cast Iron Soil Pipes has been widely used in the building industry as a reliable drainage system for a long time, it can be used in sanitary Drain, Waste, and Vent, ...