Rectangular steel tubing, is a strong, versatile, and cost-effective choice for your project. It offers a good balance of strength and affordability.
Product Description:
Rectangular carbon steel tubing is a welded or seamless steel tube with a rectangular cross‑section, engineered for structural support, fabrication, and load‑bearing applications. Its flat sides and uniform geometry make it ideal for construction frameworks, equipment manufacturing, and precision-engineered assemblies where stability and clean aesthetics are required.
Benefits of Rectangular Steel Tubing
Superior Strength and Stiffness: The rectangular shape provides exceptional strength and rigidity, making it ideal for structural components that require high load-bearing capacity.
Aesthetic Appeal: Its clean lines and modern look make it a popular choice for architectural and design projects.
Customizable: Rectangular tubing can be easily cut, welded, and bent to meet specific project requirements.
Improved Weldability: The flat surfaces of rectangular tubing facilitate welding, ensuring strong and durable joints.
- Exceptional Strength-to-Weight Ratio
- Versatile Fabrication
- Dimensional Consistency
- Corrosion Resistance Options
- Cost-Effective Durabilit
Applications
Choose rectangular steel tubing for a variety of industries, including construction, automotive, and manufacturing.
Structural components: Frames, beams, columns, and supports
Automotive and transportation: Vehicle frames, chassis, and roll cages
Furniture and fixtures: Tables, chairs, shelves, and display cases
Machinery and equipment: Machine frames, enclosures, and guards
Construction: Building frameworks, fencing, and gates
Product Advantages:
- Superior load distribution
- Enhanced aesthetic appeal
- High torsional strength
- Wide size range
- Compatible with ASTM A500, A513, A36
Specifications & Requirements:
- Standards: ASTM A500 (Grades A, B, C), ASTM A513, ASTM A36
- Dimensions: Width 1"–12", Height 0.5"–8", Length 20–24 ft or custom
- Tolerances: Wall ±10%, Squareness ≤ 2°, Straightness ≤ 1/8" per 10 ft
- Finishes: Hot‑rolled, Cold‑rolled, Pickled & oiled, Galvanized, Powder‑coated
Product Properties:
- Tensile strength: 45,000–70,000 psi
- Excellent weldability
- Good formability
- Impact resistance
- Thermal stability
Product Wall Thickness Options:
- Light Gauge: 0.065", 0.083", 0.095"
- Medium Gauge: 0.120", 0.134", 0.188"
- Heavy Gauge: 0.250", 0.313", 0.375", 0.500"
Product Materials & Manufacturing:
- -Materials: A36, A500, A513 carbon steels
- Manufacturing: ERW, Seamless, Hot‑rolled, Cold‑formed
- Quality Control: Ultrasonic weld testing, Dimensional inspection, Mechanical verification
Product Comparable Options:
- Square steel tubing
- Round steel tubing
- Aluminum rectangular tubing
- Stainless steel rectangular tubing
Additional Notes:
- Custom fabrication available
- Ideal for construction, trailers, machinery, fencing, furniture, and general fabrication
- Bulk pricing available
Check Dimensions Instantly
Visit our Conversion Charts for detailed pipe sizes, wall thickness, and weight information.
| O.D. |
Wall |
Wt./Ft. |
|
1x1/2 (1.000)
|
|
0.035
|
0.340
|
|
0.049
|
0.467
|
|
0.065
|
0.606
|
|
0.083
|
0.753
|
|
0.035
|
0.340
|
|
0.049
|
0.467
|
|
0.065
|
0.606
|
|
0.083
|
0.753
|
|
0.065
|
0.606
|
| O.D. |
Wall |
Wt./Ft. |
|
1-1/4x1/2 (1.250)
|
|
0.065
|
0.716
|
|
0.035
|
0.400
|
|
0.049
|
0.550
|
|
0.065
|
0.716
|
|
0.065
|
0.716
|
|
0.083
|
0.894
|
|
0.120
|
1.232
|
|
0.035
|
0.400
|
|
0.049
|
0.550
|
|
0.065
|
0.716
|
| O.D. |
Wall |
Wt./Ft. |
|
1-1/2x1/2 (1.500)
|
|
0.035
|
0.459
|
|
0.049
|
0.634
|
|
0.065
|
0.827
|
|
0.083
|
1.035
|
|
0.120
|
1.436
|
|
0.035
|
0.459
|
|
0.049
|
0.634
|
|
0.065
|
0.827
|
|
0.083
|
1.035
|
|
0.035
|
0.459
|
|
0.049
|
0.634
|
|
0.065
|
0.827
|
|
0.083
|
1.035
|
|
0.120
|
1.436
|
|
0.035
|
0.459
|
|
0.049
|
0.634
|
|
0.065
|
0.827
|
|
0.083
|
1.035
|
|
0.120
|
1.436
|
| O.D. |
Wall |
Wt./Ft. |
|
1-5/8x1 (1.625)
|
|
0.035
|
0.608
|
|
0.049
|
0.842
|
|
0.065
|
1.103
|
|
0.083
|
1.388
|
| O.D. |
Wall |
Wt./Ft. |
|
1-3/4x3/4 (1.750)
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.035
|
0.578
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.083
|
1.317
|
|
0.035
|
0.578
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.083
|
1.317
|
| O.D. |
Wall |
Wt./Ft. |
|
2x1/2 (2.000)
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.083
|
1.317
|
|
0.120
|
1.844
|
|
0.188
|
2.715
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.083
|
1.317
|
|
0.120
|
1.844
|
|
0.049
|
0.800
|
|
0.065
|
1.048
|
|
0.083
|
1.317
|
|
0.120
|
1.844
|
| O.D. |
Wall |
Wt./Ft. |
|
2-1/2x1 (2.500)
|
|
0.049
|
1.134
|
|
0.065
|
1.490
|
|
0.083
|
1.882
|
|
0.120
|
2.660
|
|
0.083
|
1.882
|
|
0.065
|
1.490
|
|
0.083
|
1.882
|
|
0.109
|
2.433
|
|
0.120
|
2.660
|
|
0.188
|
3.994
|
|
0.250
|
5.100
|
|
0.083
|
1.882
|
|
0.120
|
2.660
|
|
0.134
|
2.945
|
| O.D. |
Wall |
Wt./Ft. |
|
3x1 (3.000)
|
|
0.065
|
1.711
|
|
0.083
|
2.164
|
|
0.120
|
3.068
|
|
0.188
|
4.633
|
|
0.065
|
1.711
|
|
0.083
|
2.164
|
|
0.120
|
3.068
|
|
0.065
|
1.711
|
|
0.083
|
2.164
|
|
0.120
|
3.068
|
|
0.188
|
4.633
|
|
0.065
|
1.711
|
|
0.083
|
2.164
|
|
0.109
|
2.803
|
|
0.120
|
3.068
|
|
0.188
|
4.633
|
|
0.250
|
5.950
|
|
0.313
|
7.181
|
| O.D. |
Wall |
Wt./Ft. |
|
3-1/2x1-1/2 (3.500)
|
|
0.109
|
3.544
|
|
0.120
|
3.884
|
|
0.134
|
4.312
|
|
0.083
|
2.728
|
|
0.120
|
3.884
|
|
0.188
|
5.911
|
| O.D. |
Wall |
Wt./Ft. |
|
4x1-1/2 (4.000)
|
|
0.083
|
3.011
|
|
0.120
|
4.292
|
|
0.188
|
6.551
|
|
0.065
|
2.374
|
|
0.083
|
3.011
|
|
0.109
|
3.915
|
|
0.120
|
4.292
|
|
0.188
|
6.551
|
|
0.250
|
8.500
|
|
0.313
|
10.374
|
|
0.375
|
12.113
|
|
0.083
|
3.011
|
|
0.120
|
4.292
|
|
0.134
|
4.767
|
|
0.083
|
3.011
|
|
0.120
|
4.292
|
|
0.188
|
6.551
|
|
0.250
|
8.500
|
|
0.313
|
10.374
|
|
0.375
|
12.113
|
| O.D. |
Wall |
Wt./Ft. |
|
5x2 (5.000)
|
|
0.120
|
5.516
|
|
0.188
|
8.468
|
|
0.250
|
11.050
|
|
0.120
|
5.516
|
|
0.188
|
8.468
|
|
0.250
|
11.050
|
|
0.120
|
5.516
|
|
0.188
|
8.468
|
|
0.250
|
11.050
|
|
0.313
|
13.566
|
|
0.375
|
15.938
|
|
0.500
|
20.400
|
|
0.188
|
8.468
|
|
0.250
|
11.050
|
|
0.375
|
15.938
|
| O.D. |
Wall |
Wt./Ft. |
|
6x2 (6.000)
|
|
0.083
|
4.422
|
|
0.120
|
6.332
|
|
0.188
|
9.747
|
|
0.250
|
12.750
|
|
0.313
|
15.695
|
|
0.375
|
18.488
|
|
0.188
|
9.747
|
|
0.250
|
12.750
|
|
0.313
|
15.695
|
|
0.375
|
18.488
|
|
0.500
|
23.800
|
|
0.120
|
6.332
|
|
0.188
|
9.747
|
|
0.250
|
12.750
|
|
0.313
|
15.695
|
|
0.375
|
18.488
|
|
0.500
|
23.800
|
| O.D. |
Wall |
Wt./Ft. |
|
7x3 (7.000)
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.500
|
30.600
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.500
|
30.600
|
| O.D. |
Wall |
Wt./Ft. |
|
8x2 (8.000)
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.125
|
8.288
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.500
|
30.600
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.500
|
30.600
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
|
0.500
|
30.600
|
|
0.188
|
12.303
|
|
0.250
|
16.150
|
|
0.313
|
19.952
|
|
0.375
|
23.588
|
| O.D. |
Wall |
Wt./Ft. |
|
9x3 (9.000)
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.500
|
37.400
|
| O.D. |
Wall |
Wt./Ft. |
|
10x2 (10.000)
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.500
|
37.400
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.313
|
24.208
|
|
0.375
|
28.688
|
|
0.500
|
37.400
|
|
0.188
|
14.860
|
|
0.250
|
19.550
|
|
0.375
|
28.688
|
|
0.500
|
37.400
|
| O.D. |
Wall |
Wt./Ft. |
|
12x2 (12.000)
|
|
0.188
|
17.417
|
|
0.250
|
22.950
|
|
0.188
|
17.417
|
|
0.250
|
22.950
|
|
0.313
|
28.465
|
|
0.375
|
33.788
|
|
0.188
|
17.417
|
|
0.250
|
22.950
|
|
0.313
|
28.465
|
|
0.375
|
33.788
|
|
0.500
|
44.200
|
|
0.188
|
17.417
|
|
0.250
|
22.950
|
|
0.313
|
28.465
|
|
0.375
|
33.788
|
|
0.500
|
44.200
|
|
0.250
|
22.950
|
|
0.313
|
28.465
|
|
0.375
|
33.788
|
|
0.500
|
44.200
|
DOWNLOAD CATALOG
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download as a PDF file.
DOWNLOAD CATALOG
CONVERSION CHARTS
If you need to figure out any conversions or equivalents, check out our Conversion Charts.
VIEW CONVERSIONS
Choose Aladdin Steel for Rectangular Steel Tubing
We carry a variety of tubing and can customize sizes to your request. Contact us to learn more.