Product Overview
Rectangular hollow section, or RHS, starts as strip that is roll formed and high frequency welded and then sized to a rectangular section with radiused corners. Because the two axes differ, a rectangular tube carries much more bending about its strong axis than a square tube of the same weight, which is exactly what a trailer chassis, a bed frame or a machine guard needs. The internal weld flash is scarfed off so there is no stress raiser inside the wall, the wall tolerance is held within +/-10%, and both mill finish and pre-galvanized or hot dip galvanized stock are available.
Specifications
| Parameter | Value |
|---|---|
| Size range | 20x10x1.5 to 400x200x12 mm |
| Common sizes | 20×40 / 40×80 / 50×100 / 100×200 mm |
| Wall thickness | 1.5 – 8.0 mm |
| Steel grade | Q235B / S235JR / A500 Gr.B / Q345B |
| Yield strength | min 235 MPa |
| Tensile strength | 375 – 500 MPa |
| Corner radius | 1.5 – 3.0 x wall thickness |
| Wall tolerance | +/- 10% |
| Standard length | 6 m / 9 m / 12 m |
| Surface | Mill finish / black / pre-galvanized or hot dip galvanized |
| Weld | High frequency / internal flash removed |
Applications
Used for trailer and truck chassis, container flatbed frames, machine bases and guards, pallet racking beams, agricultural implements, solar mounting, mezzanine flooring and architectural handrails. Fabricators in Africa, the Middle East and South America buy it cut to drawing length for trailers and steel furniture, while racking makers order pre-galvanized 50×100 and 100×200.
Packing / Delivery / Payment
Packed bare in hexagonal or square bundles of 1-3 tons with timber dunnage and end protection, or on wooden pallets for galvanized material; a 20GP holds about 25 tons. Stock ships in 7-15 days, rolling orders in 20-25 days, and galvanizing adds 10-15 days. Payment by L/C at sight or T/T with 30% deposit. EN 10204 3.1 mill certificate, weld inspection report, zinc coating report, packing list and Certificate of Origin are provided.