Triad Metals Jumbo HSS Logo

The Largest Size Metal Tubes Made

Triad Metals is a top provider of steel hollow structural sections (HSS) in sizes ranging from 10″ to 22″ square, with wall thicknesses up to 0.875″. Jumbo HSS are readily available for ASTM A500, ASTM A1085 and CSA G40.21.

Jumbo HSS are typically used in vertical columns and diagonal bracing applications. They offer enhanced performance for large, long-span trusses and are a superior, cost-effective alternative to open sections and built-up, welded box sections used in structures with a high load demand.

Quality, Ease, Savings

Triad Metals Jumbo HSS Stack

Unequaled Manufacturing Efficiencies

Triad Metals stocks an extensive inventory of products, and one of the largest selections of carbon steel shapes: Beams, Channels, Angles, Flats, Rounds, Squares, Plate, Pipe, Piling as well as Tubes. Currently Triad Metals is one of the largest distributors of Atlas Tubes’ products.

Triad Metals Jumbo HSS Round

ROUND

Up to 20”
Wall Thickness: 0.188” – 0.625”

Triad Metals Jumbo HSS Rectangle

RECTANGLE

Up to 24” x 12”
Wall Thickness: 0.188” – 0.75”

Triad Metals Jumbo HSS Square

SQUARE

Up to 22”
Wall Thickness: 0.188” – 0.875”

Triad Metals has locations across the eastern US and Canada, ready to serve you quickly and on-time.

All of Triad’s hollow structural sections (HSS) are readily available through service centers across North America. Our proprietary products, ASTM A1085 HSS and jumbo sizes of ASTM A500 HSS and CSA G40.21 HSS, are no exception. Find them easily through the locations listed below.

Triad Metals Flip Rotate Phone Icon

Rotate Phone

In Stock and Ready to Ship from the Following Locations:

Pittsburgh, Pennsylvania

800-355-1140 Toll Free

Columbia City, Indiana

877-401-8283 Toll Free

Petersburg, Virginia

877-877-7783 Toll Free

Triad Metals has Jumbo HSS

Bigger sizes and increased availability are only two of the advantages we offer. Triad Metals continues to play a leading role in helping return steel manufacturing to North America, creating jobs and bringing a high level of technical knowhow to the US steel industry. 

HSS AVAILABILITY CHARTS

HSS AVAILABILITY CHART - ROUNDS

NOMINAL WALL THICKNESS

OD in.0.2160.2180.2370.2500.2580.2760.2800.3000.3130.3180.3220.3370.3420.3650.3750.5000.625
0.840
1.050
1.315
1.500
1.66
1.9
2.25
2.3755.0205.674
2.56.013
2.8757.0157.661
3.07.349
3.57.5808.68610.253
4.010.02212.510
4.510.79011.35814.01014.98316.536
5.012.69415.68318.54024.050
5.56314.19914.63020.79727.062
6.015.36919.03122.55029.402
6.62517.03718.99021.12025.05532.738
7.018.03922.37526.55834.743
7.2518.71023.21427.56436.08444.269
7.519.38024.05028.56037.42045.930
8.62522.38227.81028.58033.07243.42853.450
9.62525.05531.15833.94037.08148.77360.131
10.026.06032.41738.58050.78462.645
10.7528.06134.92238.58141.59154.78667.648
11.7530.73445.60060.13174.329
12.031.40239.10046.60261.46875.999
12.7533.40641.61049.60865.47681.010
13.37535.07743.71052.11468.81785.186
14.036.74745.80054.61972.15889.362
16.042.09252.49062.63782.848102.724
18.047.43759.18070.65493.540116.087
20.052.78265.87078.672104.228129.449
OD in.0.0830.1000.1090.1130.1200.1250.1330.1340.1400.1450.1540.1790.1880.1910.2000.203
0.8400.850
1.0501.131
1.3151.4041.5901.6792.172
1.5001.769
1.661.6701.8102.0512.1862.2702.997
1.91.9242.0852.3722.5302.7803.4323.631
2.252.8403.0304.144
2.3752.6383.0073.2103.6604.385
2.53.1743.3904.646
2.8753.5313.6753.9305.4005.800
3.03.8424.1105.651
3.54.3324.5104.8206.656
4.04.9725.1785.5407.661
4.55.6146.2548.644
5.06.5146.9709.671
5.5637.77710.775
6.07.8508.40411.682
6.6259.29812.903
7.013.690
7.25
7.5
8.62516.956
9.625
10.019.722
10.7521.171
11.75
12.0
12.75
13.375
14.027.760
16.031.780
18.0
20.0

HSS AVAILABILITY CHART - SQUARES

NOMINAL WALL THICKNESS

OD in.0.0650.0830.1000.1200.1250.1340.1880.238
0.5 x 0.50.385
0.75 x 0.750.6050.7531.028
1 x 10.8271.0351.1401.4371.488
1.25 x 1.251.0481.3171.4801.8461.9122.408
1.5 x 1.51.2701.6001.8202.2522.2002.4873.040
2 x 21.7122.1642.5803.0683.0603.4014.320
2.125 x 2.1253.4003.6284.953
2.5 x 2.52.6703.7603.9004.3125.5907.101
3 x 34.5804.7505.2226.8708.665
3.5 x 3.55.5205.6105.9808.15010.070
4 x 46.3306.4606.8909.420
4.5 x 4.57.3107.81010.700
5 x 58.1608.72011.970
6 x 69.86014.530
7 x 717.080
8 x 819.630
9 x 922.180
10 x 1024.730
12 x 12
14 x 14
16 x 16
18 x 18
20 x 20
22 x 22
OD in.0.2500.3130.3750.5000.6250.7500.875
0.5 x 0.5
0.75 x 0.75
1 x 1
1.25 x 1.25
1.5 x 1.54.250
2 x 25.410
2.125 x 2.125
2.5 x 2.57.110
3 x 38.81010.58012.170
3.5 x 3.510.51012.70014.720
4 x 412.21014.83017.27021.630
4.5 x 4.513.91016.96019.82024.030
5 x 515.62019.08022.37028.430
6 x 619.02023.33427.48035.24042.300
7 x 722.42027.59032.58042.05050.810
8 x 825.82031.84037.69048.85059.320
9 x 929.23036.10042.79055.66067.820
10 x 1032.63040.35047.90062.46076.33089.500
12 x 1239.43048.86058.10076.07093.340109.910
14 x 1457.36068.31089.680110.360130.330149.610
16 x 1665.87078.520103.300127.370150.750173.430
18 x 1888.730116.910

144.390

171.160197.240
20 x 2098.940130.520161.400191.580221.060
22 x 22212.000244.900

HSS AVAILABILITY CHART - RECTANGLES

NOMINAL WALL THICKNESS

OD in.0.0650.0830.1000.1200.1250.1340.1880.2380.2500.3130.3750.5000.6250.750
1.5 x 0.751.1201.520
1.5 x 11.0481.3171.844
2 x 11.2701.6001.9042.2522.2002.3303.040
2 x 1.51.8202.5402.6302.7903.680
2.5 x 12.6302.7903.680
2.5 x 1.51.6702.1642.5803.0703.0603.4014.3205.410
2.5 x 23.3503.4803.7004.9606.260
3 x 11.7122.1643.0703.0603.2504.320
3 x 1.52.4463.4763.4803.7004.9606.260
3 x 22.6703.7603.9004.1605.5906.8307.1108.450
3 x 2.54.3304.6106.2307.960
3.5 x 1.53.9004.1605.590
3.5 x 24.3304.6106.2307.960
3.5 x 2.54.7505.0706.8708.810
4 x 1.254.088
4 x 1.54.3304.6106.230
4 x 24.7504.7505.0706.8708.4508.81010.58012.170
4 x 2.55.1805.5307.5109.660
4 x 35.5205.6105.9808.15010.07010.51012.70014.720
5 x 25.5205.6105.9808.15010.07010.51012.70014.720
5 x 2.56.0306.4408.78011.360
5 x 36.3306.4606.8909.42012.21014.83017.27021.630
5 x 47.3107.81010.70013.91016.96019.82025.030
6 x 26.3306.4606.8909.42012.21014.83017.270
6 x 37.3107.81010.70013.91016.96019.82025.030
6 x 48.1608.72011.97015.62019.08022.37028.430
6 x 59.0109.63013.30017.32021.22024.93031.840
7 x 38.1608.72011.97015.62019.08022.37028.430
7 x 49.0109.63013.30017.32021.22024.93031.840
7 x 59.86014.53019.02023.34027.48035.240
8 x 28.1608.72011.97015.62019.08022.370
8 x 39.0109.63013.30017.32021.22024.93031.840
8 x 49.86014.53019.02023.34027.48035.24042.300
8 x 617.08022.42027.59032.58042.05050.810
9 x 517.08022.42027.59032.58042.05050.810
9 x 719.63025.82031.84037.69048.85059.320
10 x 214.53019.02023.34027.480
10 x 310.71011.45015.80020.72025.46030.030
10 x 3.511.13012.00016.44021.57026.53031.310
10 x 417.08022.42027.59032.58042.05050.810
10 x 518.35024.12029.72035.13045.45055.060
10 x 619.63025.82031.84037.69048.85059.320
10 x 822.18029.23036.10042.79055.66067.820
12 x 318.35024.12029.72035.130
12 x 419.63025.82031.84037.69048.85059.320
12 x 622.18029.23036.10042.79055.66067.820
12 x 824.73032.63040.35047.90062.46076.330
12 x 1036.03044.67053.00069.27084.840
14 x 422.18029.23036.10042.79055.66067.820
14 x 624.73032.63040.35047.90062.46076.330
14 x 1039.43048.86058.10076.07093.340
16 x 432.63040.35047.90062.46076.330
16 x 839.43048.86058.10076.07093.340
16 x 1257.36068.31089.680110.360130.330
18 x 639.43048.86058.10076.07093.340
20 x 439.43048.86058.10076.070
20 x 857.36068.31089.680110.360
20 x 1265.87078.520103.300127.370150.750
24 x 12116.910144.390171.160

Triad offers an array of services, from saw cutting to drilling and threading, contact us to see how we can meet your needs. Applications include airports, bridges, buildings, DOT projects and stadiums.


To minimize cost, waste and lost time, product can be supplied prepared to your specifications and ready for use upon delivery. A wide variety of services are available, including ID flash removal, specialty steel chemistries and thermal stress relief. Atlas Tube’s exclusive Epox Z Kote® even reduces material handling and surface preparation for final coating.