Material number referring to a material property [MP]. Material number must be between 1 and 40.

Nominal diameter of pipe and schedule rating. Only valid ratings accepted. If these are specified, the OD and TK values are found from an internal table.

Valid values for DNOM are: 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.

Valid ratings for SCHED are: 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80 80S, 100, 120, 140, 160, XS, XXS, and STD.

Outer diameter of pipe (if DNOM not specified). If both DNOM and OD are not specified, OD and TK retain their previous values.

Wall thickness of pipe (if OD specified).