Pipe12STD pipe

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

Pipe12STD has a 12 3/4 in. outside diameter and a 3/8 in. nominal wall.

Also known as NPS 12 pipe (12 in. nominal), standard weight (STD) wall.

At 49.6 lb per foot it is the lightest of the 3 Pipe12 sizes, which run from 49.6 to 126 lb/ft.

For strong-axis bending its section modulus is Sx = 41 in³ and its moment of inertia Ix = 262 in⁴, with a plastic modulus Zx = 53.7 in³.

Detailing dimensions

Outside diameter12 3/4"
Nominal wall (t)3/8"

Section properties

Weight49.6 lb/ft
Area (A)13.7 in²
Ix262 in⁴
Sx41 in³
Zx53.7 in³
rx4.39 in
Iy262 in⁴
Sy41 in³
Zy53.7 in³
ry4.39 in
J523 in⁴

Other Pipe12 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

Pipe12XSPipe12XXS

Similar weight pipe sizes

Comparable 49.6 lb/ft sections in other pipe sizes.

Pipe6XXS53.2 lb/ft · Sx 19.2 in³Pipe14STD54.6 lb/ft · Sx 50 in³Pipe10XS54.8 lb/ft · Sx 37 in³Pipe8XS43.4 lb/ft · Sx 23.1 in³Pipe10STD40.5 lb/ft · Sx 28.1 in³Pipe5XXS38.6 lb/ft · Sx 11.6 in³Pipe16STD62.6 lb/ft · Sx 65.9 in³Pipe8STD28.6 lb/ft · Sx 15.8 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need Pipe12STD cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Pipe · Steel Beam Size Chart

Interactive drawing