Piping Supply Journal

30 inch (DN 750) pipe dimensions & weight

30 inch (DN 750) steel pipe has an outside diameter of 762.0 mm (30.000 in) in every schedule. Below: wall thickness, inside diameter, weight per metre and water capacity for each ASME B36.10M / B36.19M schedule.

ScheduleWall (mm)Wall (in)ID (mm)CS kg/mCS lb/ftSS 304 kg/mWater L/m
STD9.530.375742.94176.84118.84178.64433.51
XS12.700.500736.60234.67157.70237.06426.14

CS = carbon steel (7.85 g/cm³). SS 304 at 7.93 g/cm³; for 316 multiply CS weight by 1.017. Water capacity = internal volume per metre.

Frequently asked questions

What is the OD of 30 inch pipe?

30 inch (DN 750) pipe has an outside diameter of 762.0 mm (30.000 in), regardless of schedule.

What is the wall thickness of 30 inch STD (standard weight) pipe?

9.53 mm (0.375 in), giving an inside diameter of 742.94 mm.

How much does 30 inch STD (standard weight) pipe weigh?

About 176.84 kg/m (118.84 lb/ft) in carbon steel, or 1061.0 kg for a 6 m length.

Last updated 2026-11-02