NPS 10 Pipe

Outside diameter 10.750″

OD in mm 273.05 mm

Every NPS 10 pipe has this OD regardless of schedule — the schedule changes only the wall thickness and bore.

Schedules

Schedule	Wall	Wall mm	Inside diameter	ID mm
40 = STD	0.365″	9.271	10.020″	254.508
XS	0.500″	12.7	9.750″	247.65
80	0.594″	15.088	9.562″	242.875

Data provenance. ASME B36.10M, Welded and Seamless Wrought Steel Pipe (Table 2.1) (ASME). ID is derived: OD − 2 × wall. Dimensions are nominal; actual walls carry the standard's mill tolerance. See all data sources.