Clean Lines. Rock-Solid Strength. All-American Craftsmanship.

Available Sizes

  • 5/8" Square - Light-duty frames, display fixtures, small fabrication projects

  • 1" Square - Golf cart frames, utility vehicle construction, furniture manufacturing

  • 1-1/2" Square - Carport structures, trailer chassis, heavy-duty fabrication (most popular)

Material Specifications

  • Gauge Range: 14-20 gauge (varies by size and application)

  • Custom Lengths: 60" minimum to 340" maximum

  • No Minimum Orders - Order exactly what you need

Material Standards

  • ASTM A513 (cold-formed welded carbon steel)

  • Galvanized coating: ASTM A653 (G30, G40, G60 available)

  • Bare carbon steel: Mill finish

Available Finishes

  • Galvanized - Corrosion-resistant zinc coating for outdoor and high-moisture applications

  • Bare Carbon - Mill finish suitable for indoor use or customer finishing

Quality Assurance

  • Dimensional tolerances per industry standards

  • Visual inspection of every tube

  • Straightness verification testing

  • Wall thickness consistency testing

  • Precise corner formation for clean welds

Workers operating machinery in a factory with metal pipes and equipment in a large industrial warehouse.

Why TechLine Square Tube?

Our square tube combines sharp uniformity with the strength to support heavy loads and clean designs. From carport builders requiring structural integrity to fabricators demanding precise corner geometry, TechLine square tube delivers consistent quality for professional results.

Precision Manufacturing: Every tube is formed with precise 90-degree corners and uniform wall thickness throughout, ensuring excellent weldability and structural performance. Sharp corner formation means cleaner welds and stronger joints.

Versatile Applications: Whether you're building carport structures, fabricating golf cart frames, or constructing trailer chassis, our square tube provides the strength-to-weight ratio and multi-angle fabrication capabilities your projects demand.

Custom Capabilities: Need specific lengths? We cut from 60" to 340" to eliminate field cutting and reduce waste. No minimums means you order only what your project requires.