Square tubing sizes

Every standard square HSS — what the yard calls square tubing — with walls, weight per foot and live piece weights. The outside size stays fixed while the wall grows inward, which is why one footprint comes in half a dozen weights.

Square tubing filter

DesignationSizeWall (in)lb/ft20 ft piece
HSS16X16X5/816×165/8127.372,547 lb
HSS14X14X5/814×145/8110.362,207 lb
HSS16X16X1/216×161/2103.32,066 lb
HSS12X12X5/812×125/893.341,867 lb
HSS14X14X1/214×141/289.681,794 lb
HSS16X16X3/816×163/878.521,570 lb
HSS10X10X5/810×105/876.331,527 lb
HSS12X12X1/212×121/276.071,521 lb
HSS14X14X3/814×143/868.311,366 lb
HSS9X9X5/89×95/867.821,356 lb
HSS16X16X5/1616×165/1665.871,317 lb
HSS10X10X1/210×101/262.461,249 lb
HSS8X8X5/88×85/859.321,186 lb
HSS12X12X3/812×123/858.11,162 lb
HSS14X14X5/1614×145/1657.361,147 lb
HSS9X9X1/29×91/255.661,113 lb
HSS7X7X5/87×75/850.811,016 lb
HSS12X12X5/1612×125/1648.86977 lb
HSS8X8X1/28×81/248.85977 lb
HSS10X10X3/810×103/847.9958 lb
HSS9X9X3/89×93/842.79856 lb
HSS6X6X5/86×65/842.3846 lb
HSS7X7X1/27×71/242.05841 lb
HSS10X10X5/1610×105/1640.35807 lb
HSS12X12X1/412×121/439.43789 lb
HSS8X8X3/88×83/837.69754 lb
HSS9X9X5/169×95/1636.1722 lb
HSS6X6X1/26×61/235.24705 lb
HSS10X10X1/410×101/432.63653 lb
HSS7X7X3/87×73/832.58652 lb
HSS8X8X5/168×85/1631.84637 lb
HSS12X12X3/1612×123/1629.84597 lb
HSS9X9X1/49×91/429.23585 lb
HSS5X5X1/25×51/228.43569 lb
HSS7X7X5/167×75/1627.59552 lb
HSS6X6X3/86×63/827.48550 lb
HSS8X8X1/48×81/425.82516 lb
HSS4-1/2X4-1/2X1/24-1/2×4-1/21/225.03501 lb
HSS5-1/2X5-1/2X3/85-1/2×5-1/23/824.93499 lb
HSS10X10X3/1610×103/1624.73495 lb
HSS6X6X5/166×65/1623.34467 lb
HSS7X7X1/47×71/422.42448 lb
HSS5X5X3/85×53/822.37447 lb
HSS9X9X3/169×93/1622.18444 lb
HSS4X4X1/24×41/221.63433 lb
HSS5-1/2X5-1/2X5/165-1/2×5-1/25/1621.21424 lb
HSS4-1/2X4-1/2X3/84-1/2×4-1/23/819.82396 lb
HSS8X8X3/168×83/1619.63393 lb
HSS5X5X5/165×55/1619.08382 lb
HSS6X6X1/46×61/419.02380 lb
HSS5-1/2X5-1/2X1/45-1/2×5-1/21/417.32346 lb
HSS4X4X3/84×43/817.27345 lb
HSS7X7X3/167×73/1617.08342 lb
HSS4-1/2X4-1/2X5/164-1/2×4-1/25/1616.96339 lb
HSS5X5X1/45×51/415.62312 lb
HSS9X9X1/89×91/814.96299 lb
HSS4X4X5/164×45/1614.83297 lb
HSS3-1/2X3-1/2X3/83-1/2×3-1/23/814.72294 lb
HSS6X6X3/166×63/1614.53291 lb
HSS4-1/2X4-1/2X1/44-1/2×4-1/21/413.91278 lb
HSS8X8X1/88×81/813.26265 lb
HSS5-1/2X5-1/2X3/165-1/2×5-1/23/1613.25265 lb
HSS3-1/2X3-1/2X5/163-1/2×3-1/25/1612.7254 lb
HSS4X4X1/44×41/412.21244 lb
HSS3X3X3/83×33/812.17243 lb
HSS5X5X3/165×53/1611.97239 lb
HSS7X7X1/87×71/811.56231 lb
HSS4-1/2X4-1/2X3/164-1/2×4-1/23/1610.7214 lb
HSS3X3X5/163×35/1610.58212 lb
HSS3-1/2X3-1/2X1/43-1/2×3-1/21/410.51210 lb
HSS6X6X1/86×61/89.86197 lb
HSS4X4X3/164×43/169.42188 lb
HSS5-1/2X5-1/2X1/85-1/2×5-1/21/89.01180 lb
HSS3X3X1/43×31/48.81176 lb
HSS2-1/2X2-1/2X5/162-1/2×2-1/25/168.45169 lb
HSS5X5X1/85×51/88.16163 lb
HSS3-1/2X3-1/2X3/163-1/2×3-1/23/168.15163 lb
HSS4-1/2X4-1/2X1/84-1/2×4-1/21/87.31146 lb
HSS2-1/2X2-1/2X1/42-1/2×2-1/21/47.11142 lb
HSS3X3X3/163×33/166.87137 lb
HSS4X4X1/84×41/86.46129 lb
HSS2-1/4X2-1/4X1/42-1/4×2-1/41/46.26125 lb
HSS3-1/2X3-1/2X1/83-1/2×3-1/21/85.61112 lb
HSS2-1/2X2-1/2X3/162-1/2×2-1/23/165.59112 lb
HSS2X2X1/42×21/45.41108 lb
HSS2-1/4X2-1/4X3/162-1/4×2-1/43/164.9699 lb
HSS3X3X1/83×31/84.7595 lb
HSS2X2X3/162×23/164.3286 lb
HSS2-1/2X2-1/2X1/82-1/2×2-1/21/83.978 lb
HSS2-1/4X2-1/4X1/82-1/4×2-1/41/83.4870 lb
HSS2X2X1/82×21/83.0561 lb

Nominal walls — the design wall for A500 HSS is thinner (about 0.93 × nominal), already baked into published section properties.

Published nominal dimensions and weights for estimating and orientation — member selection belongs to the engineer of record. Rectangular and round HSS live in the full roster: structural shape weights. The nominal-wall story in full: HSS sizes and wall thickness.

Common questions

What sizes does steel square tubing come in?
Standard structural square tubing (HSS) runs from about 2×2 up to 16×16 outside, each size in several wall thicknesses. A single 6×6 comes in seven walls from 1/8 to 5/8 inch — same footprint, very different weight.
Is square tubing the same as HSS?
For structural steel, yes — what the yard calls square tubing, the drawing calls a hollow structural section. HSS6X6X3/8 is 6 by 6 inches outside with a 3/8 inch nominal wall. Mechanical and fence tubing are different products with their own specs.
Why does the measured wall come up thin?
The callout wall is nominal. ASTM A500 permits a wall tolerance and design uses about 0.93 times nominal — a 1/2 inch wall measuring near 0.465 inches is within specification, not a defect.
Why is square tubing priced the way it is?
Steel is sold by weight, so a heavier wall at the same outside size costs more per foot. The weight column above is what drives a quote — multiply lb/ft by your length and the market's price per pound and you are close.

Want these for yourself?

We can put these tools on your site, in your systems, or in front of your customers.

Everything here is something we built for ourselves first. If a calculator like this would earn its keep in your business, we build the same thing against your data and your brand.

On your website

Branded to your shop and hosted on your own domain. Reference tools are the reason people bookmark a fabricator's site — they come back for the chart and remember who published it.

Wired to your data

The same math running against your inventory, your mill certs and your job costs, so a takeoff pulls real weights from real material instead of a lookup table.

As internal tooling

Built into whatever your estimators already open. Fewer spreadsheets passed around, and one place where the numbers are known to be right.

Talk about a buildSee what we've built

Custom builds start at $8,500 · Free 30-minute walk first