SHARP CORNER HOLLOW SECTIONION

Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of sharp corner hollow sectionion in China. Please feel free to buy high quality sharp corner hollow sectionion from our factory. Good service and reasonable price are available.

Standard: BS EN 10210 (Europe)        BS EN 10219 (Europe)
                  ASTM A500 (American)
                  GB/T 3094-2000 (China)    GB/T 6728-2002 (China)
                 JIS G3466 (Japan)
                 AS 1163 (Australia)

Corner Type: Radius Corner, Sharp Angle Corner, Right Angle Corner

Application: Heavy steel structure, Aerospace Engineering, High-speed rail, Shipbuilding, For machinery, For automobiles and high-speed trains, For chemical industry and boiler, For bridge.

Outside diameter: (SHS)20*20-1200*1200mm               Wall Thickness: 1.3mm-50mm         

Outside diameter: (RHS)20*30-1200*1500mm                  Wall Thickness:1.2-50mm

Length:4m, 6m, 12m or as your required

Brand: LEFIN STEEL

A Sharp Corner Hollow Section is a hollow structural profile with a right Angle edge, usually in the shape of a square (SHS), rectangle (RHS), or other polygon (such as a hexagon), with a sharp right Angle (no rounded transition) at the corner.

Key features:

• Right Angle: The corners are not smooth, and are 90° or a specific Angle.
Hollow structure: hollow inside, both lightweight and high strength characteristics.
• Uniform wall thickness: Consistent wall thickness is usually guaranteed by cold bending or welding processes.

(1) Main production methods

Cold Forming:

• The metal sheet (such as carbon steel, stainless steel, aluminum alloy) is directly bent into a right Angle shape through multi-pass roll molding.
• Advantages: low cost, high efficiency, suitable for mass production.
• Disadvantages: The corner is prone to residual stress due to cold working.

Welded Process：

• The sheet metal is cut and welded into a closed section (such as a square or rectangle), and the corners are welded to form a right Angle.
• Advantages: Complex section can be customized, flexible material selection.
Disadvantages: welds can become structural weaknesses and require non-destructive testing (NDT).

(2) Key process parameters

• Material selection: Carbon steel (e.g. S355), stainless steel (304/316), aluminum alloy (6063-T5).
• Wall thickness range: usually 1.5mm to 20mm, depending on application scenario.
• Surface treatment: hot dip galvanizing, plastic spraying, anodizing (aluminum alloy) to improve corrosion resistance.

Building and steel structure:

• Frame structure: used for plant, warehouse columns, beams, right Angle for modular assembly.
• Truss system: right-angle joints are easier to achieve rigid connections (such as welded or bolted connections).
• Curtain wall support: lightweight and simple in appearance, suitable for modern architecture.

Machinery and equipment:

• Mechanical frame: Support structure for machine tools, automation equipment, right Angle design to facilitate the installation of sensors or rails.
• Conveying system: conveyor support, drum support, need high rigidity and accurate alignment.

Transportation:

• Vehicle chassis: truck, trailer chassis skeleton, lightweight design to reduce energy consumption.
• Rail transit: subway cars, internal structural parts of high-speed rail.

Home and decoration:

• Furniture design: bookshelves, table legs, etc., right Angle shape fits the modern minimalist style.
• Decorative components: stair handrails, display shelves, the surface can be polished or sprayed with personalized colors.

Advantages：

1. Right Angle design: easy to align and assemble. 
2. Lightweight: hollow structure to reduce weight. 
3. High rigidity: suitable for bearing bending and torsional loads.
4. Low cost: the cold bending process is economical and efficient.

Disadvantages：

1. Stress concentration: The right Angle is easy to produce stress concentration, need additional strengthening. 

2. Poor fatigue resistance: right angles may reduce life under dynamic loads.

3. Appearance limitations: Edges may not apply to scenes that require a rounded appearance. 

4. Anti-corrosion challenge: the corner is easy to accumulate ash or water, requiring strict surface treatment.