... /2", 3", 4", 5", 6"Outer diameter: 3.06", 3.45", 4.18", 5.18", 6.18", 7.20", 8.20 ... also supply according to your drawing or samplesPayment of the pipe flangeNo.1 TT 30% deposit prepaid, balance paid before shipment ... No.3 Seaworthy packing, according to the customer demand. Concrete pipe flanges , Weld-on collars