Rectangular Pipe(RHS)

High-Strength Welded Rectangular Tubes: Structural Solutions for Industrial & Architectural Applications.‌ ‌ERW-Formed Rectangular Hollow Sections (RHS) with Precision Joining Surfaces.‌ Manufactured through advanced Electric Resistance Welding (ERW) technology, our rectangular tubes deliver ‌flat-profile efficiency‌ for structural frameworks. Available in ‌80×40mm to 600×300mm‌ dimensions with wall thicknesses from ‌1.6mm–12.7mm‌, these ASTM A500-certified tubes support loads up to ‌650 MPa‌ yield strength. Flat surfaces reduce welding prep time by 30% vs. circular HSS.

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Product Introduction

High-Strength Welded Rectangular Tubes: Structural Solutions for Industrial & Architectural Applications.‌

‌ERW-Formed Rectangular Hollow Sections (RHS) with Precision Joining Surfaces.‌

Manufactured through advanced Electric Resistance Welding (ERW) technology, our rectangular tubes deliver ‌flat-profile efficiency‌ for structural frameworks. Available in ‌80×40mm to 600×300mm‌ dimensions with wall thicknesses from ‌1.6mm–12.7mm‌, these ASTM A500-certified tubes support loads up to ‌650 MPa‌ yield strength. Flat surfaces reduce welding prep time by 30% vs. circular HSS.


‌Key Specifications & Certifications‌

  • ‌Materials‌:
    Type Grades Key Features
    Carbon Steel ASTM A500 Gr B/C Cost-effective construction
    Stainless Steel AISI 304/316 Corrosion-resistant cladding
    Weathering Steel ASTM A847 Unpainted outdoor durability
  • ‌Tolerances‌:
    • ‌Outer Dimensions‌: ±1mm (width/depth)
    • ‌Wall Thickness‌: ±10%
    • ‌Straightness‌: ≤1.5mm/m

‌Standard Sizes & Weight Chart‌

Dimensions (W×H×t) Weight (kg/m) Load Capacity (kN/m) Common Applications
‌150×100×6.3mm‌ 22.4 185 Mezzanine floor beams
‌160×80×4.0mm‌ 14.3 92 Conveyor system frameworks
‌200×50×5.0mm‌ 18.1 134 Solar panel mounting racks

‌Custom Sizing‌:

  • ‌Max Width‌: 600mm | ‌Min Thickness‌: 1.6mm (16 gauge)
  • ‌Cut-to-Length‌: ±2mm accuracy | ‌Hole Punching‌: ±0.5mm tolerance

‌Mechanical Properties & Surface Treatments‌

Grade Yield Strength (MPa) Surface Finish Options
‌A500 Gr B‌ 345 Mill finish, galvanized (G90)
‌AISI 304‌ 205 Brushed, electropolished
‌A847‌ 345 Self-healing patina (50+ yrs)

‌Certifications‌:

  • ‌EN 10219‌: Cold-formed welded structural hollow sections.
  • ‌ISO 1461‌: Hot-dip galvanizing for rust prevention.

‌Applications Across Industries‌

  1. ‌Construction‌:
    • ‌Steel Framing‌: 150×100×6.3mm tubes for modular warehouses (15m spans).
    • ‌Stair Stringers‌: 120×60×4mm powder-coated RHS with slip-resistant treads.
  2. ‌Manufacturing‌:
    • ‌Robotic Arms‌: 80×40×3.2mm precision tubes (±0.3mm straightness).
  3. ‌Renewable Energy‌:
    • ‌Solar Farms‌: Galvanized 200×50×5mm racks (ISO 12944 C4 Marine rating).

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Supplier of various types of carbon steel

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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