The Ductile Iron pipe shall meet requirements of current AWWA Specifications C151 with Mechanical Joint or Push-on Joint type pipe. Working pressure shall be a minimum of 150 psi. Design thickness and pressure classes are listed below: • Diameter 3” Class 52 • Diameter 4” – 12” Class 350 • Diameter 14” – 24” Class 250 • Diameter 30” – 60” Class 150 The interior of all pipe shall be cement mortar lined as specified in AWWA Specification C104, and the exterior shall receive an approved bituminous coating. All gaskets, bolts and lubricants shall be furnished. Ductile Iron pipe shall be centrifugally cast with minimum wall thickness in accordance with current AWWA Specifications C151, Table 51.1. The pressure rating, metal thickness, net weight of pipe without lining, length of pipe, name of the manufacturer and letters “DI” shall be clearly marked on each length of pipe. Pipe will be ordered in truckload quantities when possible. Circumstances could arise requiring less than truckload quantities. Circumstances may also arise when we would need 100ft of 6” MJ Pipe and 8” MJ Pipe in a 24 hr delivery time
