Galvanized Steel Perforated Square Tube | Linear | Coremark Metals

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Galvanized Steel Perforated Square Tube

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Hot-dipped galvanized perforated square tube is an excellent candidate for most processing techniques. Welding, torching, or abrasive sawing galvanized steel is not recommended without proper protection and adequate ventilation. Galvanized perforated square tubes are hot rolled steel, or mild steel, tubes that have been punched and dipped into a molten zinc coating process. Hot-dipped galvanize (HDG) can be identified by its crystallization pattern, also known as “spangle” on the surface of the material. Great corrosion resistance, excellent candidate for outdoor use or exposed environments. Common applications include shelving, brackets, outdoor signs, and adjustable posts due to its telescoping size options.  Please see the available sizes table below for additional information on telescoping options. 







A500B G90
Galvanized Coating. Easy to cut. Machinable and weldable with proper ventilation.



Element Percentage
C 0.3 max
Cu 0.18 max
Fe 99 min
S 0.063 max
P 0.05 max



  Imperial Metric
Density 0.282 lb/in3 7.8 g/cc
Ultimate Tensile Strength 58,000psi 400 MPa 
Yield Tensile Strength 46,000psi 317 MPa
Melting Point ~2,750°F ~1,510°C


Production Method Hot Rolled
Grade B
The provided chemical compositions and mechanical properties are general approximations. Please contact our Customer Service Department for material test reports.
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Available Sizes


Size OD Wall Thickness Length Weight
1-1/2"x1-1/2"x12ga 1-1/2x1-1/2" 12ga 288.00" 2.062
1-1/2"x1-1/2"x14ga 1-1/2x1-1/2" 14ga 288.00" 1.360
1-3/4"x1-3/4"x12ga 1-3/4x1-3/4" 12ga 288.00" 2.433
2"x2"x12ga 2x2" 12ga 288.00" 2.459
2-1/4"x2-1/4"x12ga 2-1/4x2-1/4" 12ga 288.00" 3.070
2-1/2"x2-1/2"x12ga 2-1/2x2-1/2" 12ga 288.00" 3.544



Size Telescopes Inside
1-1/2"x1-1/2"x12ga 1-3/4"x1-3/4"x12ga
1-3/4"x1-3/4"x12ga 2"x2"x12ga
2"x2"x12ga 2-1/4"x2-1/4"x12ga
2-1/4"x2-1/4"x12ga 2-1/2"x2-1/2"x12ga



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