ASTM A860 WPHY 52, 60, 65, 70 Pipe Fittings: A Comprehensive Guide ASTM A860 WPHY pipe fittings are available in various grades to meet the specific requirements of different applications. The grades include: ASTM A860 WPHY 42 ASTM A860 WPHY 46 ASTM A860 WPHY 52 ASTM A860 WPHY 56 ASTM A860 WPHY 60 ASTM A860