Electric-Welded Square and Rectangular Steel Tubes

Rolling Trade LTD offers a dedicated product line of electric-welded square and rectangular steel tubes for construction, manufacturing, and structural applications. Produced from high-quality hot-rolled or cold-rolled steel strips, our tubes are welded longitudinally using precision high-frequency welding (ERW) technology, ensuring strong joints and consistent cross-sectional geometry.

Key Features

  • Available in square (20×20 mm to 120×120 mm) and rectangular (20×30 mm to 100×200 mm) profiles
  • Wall thickness range: 1.0 mm – 6.0 mm
  • Made from structural steel grades: S235, S275, S355 (EN 10219)
  • Accurate dimensions and smooth weld seam
  • Surface options: untreated (black), pickled, or galvanized (upon request)
  • High straightness and tight dimensional tolerances

Applications

  • Steel frame structures and industrial halls
  • Construction of fences, gates, and railings
  • Production of furniture and metal frames
  • Support structures, machinery frames, and equipment racks
  • Agricultural and greenhouse structures

Technical Specifications

Product Type Electric-welded (ERW) steel tubes
Steel Grades S235JR, S275JR, S355J2H – according to EN 10219
Profile Types Square and rectangular (custom shapes available on request)
Length Standard 6 or 12 meters; custom lengths upon request
Surface Options Black, oiled, pickled, or hot-dip galvanized

Production & Quality Control

Our steel tube production line includes slitting, forming, electric-resistance welding, sizing, straightening, and cutting processes, ensuring mechanical integrity and consistent shape. Dimensional control, weld seam inspection, and surface finish tests are conducted on each batch.

Packaging & Delivery

Tubes are bundled with steel straps and wrapped in protective film if required. Each bundle is tagged with product specifications and batch information for traceability. Delivery by truck or container is available across Europe and beyond.

Standards Compliance

Tubes are produced according to EN 10219-1 and EN 10219-2 standards for cold-formed structural hollow sections. Test certificates (EN 10204 3.1) are available upon request.

Environment & Sustainability

Rolling Trade LTD complies with the European CBAM Regulation (Regulation 2023/956), submitting quarterly emissions declarations and utilizing environmentally responsible steel sourcing.
For available dimensions, mechanical properties, or wholesale inquiries, please contact our team for a customized offer.