Central Steel Supply Company, Marlborough, MA.
Central Steel Supply Company
85 Ames Street
Marlborough, MA 01752
Phone: 800-345-3232 | 508-573-5300
Email: sales@centralsteelsupply.com
Website: www.centralsteelsupply.com
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ERW Round Steel Tube is produced with precision and strength through electric resistance welding, making it ideal for structural and mechanical use. Available in a variety of dimensions, standard stock lengths, cut-to-length sizes, and custom part orders.
Pipe and Round Tubes
Unit of Measure
1 2 

Item Name

Nominal Pipe Size (in)

Outside Diameter (in)

Inside Diameter (in)

Wall Thickness (in)

Weight Per Linear Foot (lb)

Material

Grade

Finish

Drawing

3/16" OD X .028" Wall HR ROUND TUBE (ERW) N/A 3/16 N/A 0.1875 N/A 0.1315 N/A 0.028 N/A 1 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

7/8" OD X .065" Wall HR ROUND TUBE (ERW) N/A 7/8 N/A 0.875 N/A 0.745 N/A 0.065 N/A 0.58 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

7/8" OD X .120" Wall HR ROUND TUBE (ERW) N/A 7/8 N/A 0.875 N/A 0.635 N/A 0.120 N/A 0.98 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1" OD X .065" Wall HR ROUND TUBE (ERW) N/A 1 N/A 1.000 N/A 0.870 N/A 0.065 N/A 0.65 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1" OD X .083" Wall HR ROUND TUBE (ERW) N/A 1 N/A 1.000 N/A 0.834 N/A 0.083 N/A 0.80 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1" OD X .120" Wall HR ROUND TUBE (ERW) N/A 1 N/A 1.000 N/A 0.760 N/A 0.120 N/A 1.13 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1.050" OD X .104" Wall HR ROUND TUBE (ERW) N/A 1.050 N/A 1.050 N/A 0.842 N/A 0.104 N/A 1.09 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 1/4" OD X .083" Wall HR ROUND TUBE (ERW) N/A 1-1/4 N/A 1.251 N/A 1.085 N/A 0.083 N/A 1.03 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 1/4" OD X .120" Wall HR ROUND TUBE (ERW) N/A 1-1/4 N/A 1.254 N/A 1.014 N/A 0.120 N/A 1.45 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 5/16" OD X .109" Wall HR ROUND TUBE (ERW) N/A 1-5/16 N/A 1.3125 N/A 1.0945 N/A 0.109 N/A 1.41 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 1/2" OD X .095" Wall HR ROUND TUBE (ERW) N/A 1-1/2 N/A 1.500 N/A 1.310 N/A 0.095 N/A 1.43 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 1/2" OD X .120" Wall HR ROUND TUBE (ERW) N/A 1-1/2 N/A 1.500 N/A 1.260 N/A 0.120 N/A 1.77 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 3/4" OD X .095" Wall HR ROUND TUBE (ERW) N/A 1-3/4 N/A 1.750 N/A 1.560 N/A 0.095 N/A 1.68 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

1 3/4" OD X .104" Wall HR ROUND TUBE (ERW) N/A 1-3/4 N/A 1.750 N/A 1.542 N/A 0.104 N/A 1.90 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

2" OD X .120" Wall HR ROUND TUBE (ERW) N/A 2 N/A 2.000 N/A 1.760 N/A 0.120 N/A 2.41 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

2" OD X .250" Wall HR ROUND TUBE (ERW) N/A 2 N/A 2.000 N/A 1.500 N/A 0.250 N/A 4.67 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

2" OD X .500" Wall HR ROUND TUBE (ERW) N/A 2 N/A 2.000 N/A 1.000 N/A 0.500 N/A 8 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

2 3/8" OD X .120" Wall HR ROUND TUBE (ERW) N/A 2-3/8 N/A 2.375 N/A 2.135 N/A 0.120 N/A 2.89 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

2 1/2" OD X .188" Wall HR ROUND TUBE (ERW) N/A 2-1/2 N/A 2.500 N/A 2.124 N/A 0.188 N/A 4.65 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

3" OD X .120" Wall HR ROUND TUBE (ERW) N/A 3 N/A 3 N/A 2.760 N/A 0.120 N/A 3.69 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

3" OD X .750" Wall HR ROUND TUBE (ERW) N/A 3 N/A 3 N/A 1.500 N/A 0.750 N/A 18.00 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

4" OD X .120" Wall HR ROUND TUBE (ERW) N/A 4 N/A 4 N/A 3.760 N/A 0.120 N/A 4.97 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

4" OD X .188" Wall HR ROUND TUBE (ERW) N/A 4 N/A 4 N/A 3.624 N/A 0.188 N/A 7.65 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

4 1/2" OD X .120" Wall HR ROUND TUBE (ERW) N/A 4-1/2 N/A 4.500 N/A 4.260 N/A 0.120 N/A 5.63 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

4 1/2" OD X .188" Wall HR ROUND TUBE (ERW) N/A 4-1/2 N/A 4.500 N/A 4.124 N/A 0.188 N/A 8.65 N/A Carbon Steel N/A A500 A513 N/A Bare Hot Rolled (HR)

Unit of Measure
1 2