NPS 4 Pipe Dimensions

NPS 4 pipe dimensions reference with DN size, outside diameter, wall thickness, inside diameter, and weight for available schedules.
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NPS 4 Pipe Dimensions

Schedule DN OD Wall ID Weight
Schedule 40 100 4.5 in / 114.30 mm 0.237 in / 6.02 mm 4.026 in / 102.26 mm 10.8 lb/ft / 16.07 kg/m
Schedule 80 100 4.5 in / 114.30 mm 0.337 in / 8.56 mm 3.826 in / 97.18 mm 15 lb/ft / 22.32 kg/m
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About NPS 4

NPS 4 identifies a nominal pipe size. The outside diameter remains standardized across different schedules, while wall thickness, inside diameter, and weight change with schedule.

Select a schedule above to view the exact dimensional reference page for NPS 4.

FAQ

What is the DN for NPS 4?

NPS 4 corresponds to DN 100.

Does the outside diameter change between schedules?

No. For a given NPS, the standardized outside diameter remains the same while wall thickness changes by schedule.

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