NPS 12" SCH 80 (API 5L / ASME B36.10)

Cross-Section Profile — NPS 12" SCH 80 (to scale)

All dimensions in mm · Circular hollow section · G = 131 kg/m · API 5L / ASME B36.10

131

kg / m

167

A (cm²)

19813.6

Iy (cm⁴)

1223.44

Wy (cm³)

Reference values — verify against the current edition of the applicable standard or manufacturer's table before design use.

Section Properties

Outer diameter D 323.9 mm

Wall / leg thickness t 17.48 mm

Inner diameter (D − 2t) ID 288.94 mm

Area A 167 cm²

Mass per length G 131 kg/m

Second moment (y-y) Iy 19813.6 cm⁴

Elastic modulus (y-y) Wy 1223.44 cm³

Plastic modulus (y-y) Wpl,y —

Radius (y-y) = √(Iy/A) iy 10.8924 cm

Second moment (z-z) Iz —

Elastic modulus (z-z) Wz —

Plastic modulus (z-z) Wpl,z —

Radius (z-z) iz 10.851 cm

Using this section record

Read the axis labels before using inertia or modulus: the major and minor axes are not interchangeable. Dimensions are in millimetres; area is in cm², second moments in cm⁴, moduli in cm³ and radii in cm. Convert powers of length consistently when transferring values to a calculation.

A Source line covers only its listed verified fields. Other fields remain subject to verification. A dash is unavailable, never zero. Withheld values must not be inferred from the remaining dimensions. Nominal mass and dimensions are reference values rather than measured tolerances or procurement guarantees. Confirm the exact product, manufacturing route, grade and thickness with the manufacturer. Section properties alone do not establish member resistance: stability, effective length, connections and project design requirements need separate assessment.