1. Material: Ductile cast iron ASTM-A536 Grade 65-45-12 2. Surface can be coated with epoxy powder, hot dip zinc or ordinary paint 3. Advantage: Flexible and rigid, Joint reliability, Isolates noise and vibration, Convenient joint 4. Applications: Fire protection; Power plant: Heating, ventilation and air conditioning; Industrial plant: Water treatment, plumbing and mining. Nominal Size mm/in Pipe O. D mm/in Working Pressure PSI/MPa Measurement mm/in D L 25 33.7 500 44 1 1.315 3.45 1.732 32 42.4 500 44 1¼ 1.660 3.45 1.732 40 48.3 500 44 1½ 1.900 3.45 1.732 50 57.0 500 51 2 2.244 3.45 2.007 50 60.3 500 51 2 2.375 3.45 2.007 65 73.0 500 57 2½ 2.875 3.45 2.007 65 76.1 500 57 2½ 3.000 3.45 2.007 80 88.9 500 64 3 3.500 3.45 2.519 100 108.0 500 76 4 4.252 3.45 2.992 100 114.3 500 76 4 4.500 3.45 2.992 125 133.0 500 83 5 5.250 3.45 3.267 125 139.7 500 83 5 5.500 3.45 3.267 150 159.0 500 89 6 6.260 3.45 3.503 150 165.1 500 89 6 6.500 3.45 3.503 150 168.3 500 89 6 6.625 3.45 3.503 200 219.1 500 108 8 8.625 3.45 4.251 250 273.0 500 121 10 10.750 3.45 4.763 300 323.9 500 133 12 12.750 3.45 5.236 350 377.0 500 146 14 14.843 3.45 5.748
