Square-Fit telescoping square tubing is a versatile and cost effective choice. The product was designed to provide both flexibility and maximum savings in time and labor costs. Its unique telescoping action gives flexibility in design and assembly of your products. This versatile system has been successfully fulfilling in-plant support and production needs for years.

The key element to Square-Fit’s versatility is its ability to telescope. Smaller sizes fit smoothly and snugly into the next larger size. This is made possible by the latest technology with high-frequency resistance welding. This produces smooth corner welds within very close tolerances, reducing your fabrication costs.

Square- Fit Tubing, a Versatile Choice

Square-Fit tubing can be found in a number of applications such as conveyor systems. It has numerous other uses including:

  • Racks
  • Shelving
  • Docks
  • Interior Partitions
  • Scaffolding
  • Partitions

Functionality and Versatility in a Single Steel Tube

Square-Fit is available in a variety of sizes and wall thicknesses for use in the majority of mechanical and structural applications.

Square Sign System Specification

Tube Size InchesWall Thickness U.S. Std. Gauge & InchArea Sq. In.Wt./Ft. Lbs.[l] In.4[s] In.3[r] In.
1 3/4 x 1 3/414 (0.083)0.3921.710.2010.230.716
2 x 214 (0.083)0.4741.990.2960.2960.79
1 1/2 x 1 1/212 (0.105)0.381.70.1290.1720.582
1 3/4 x 1 3/412 (0.105)0.4852.060.2310.2640.69
2 x 2 1212 (0.105)0.592.420.3720.3720.794
2 1/4 x 2 1/412 (0.105)0.6952.770.5610.4990.898
2 1/2 x 2 1/212 (0.105)0.8033.140.8040.6431.001
2 3/16 x 2 3/1610 (0.135)0.8413.430.6050.5530.848
2 1/2 x 2 1/210 (0.135)
1 3/4 x 1 3/4 QP14 (0.083)0.3921.880.2010.230.716
2 x 2 QP14 (0.083)0.4742.160.2960.2960.79
[l] = Moment of Inertia [s] = Section Modulus [r] = Radius of Gyration

 Advanced Corrosion Protection

Square-Fit tubing is available in a G90 pre-galvanized finish with a conversion coating and a clear organic topcoat to prevent rust and corrosion. It offers a 50ksi yield and a 55ksi tensile strength.


Expansive Adjustability

Perforated holes are 7/16″ spaced on 1″ centers, except for 1″ and 1-1/4 which have 11/32 holes on 1″ centers. Sections without holes are available in all sizes.