Hot-Dip Galvanized Unequal Angle Bar for Transmission Towers

**1. Product Description**
Angle steel is a structural steel product with an L-shaped cross-section, consisting of two legs meeting at a right angle. It is available in equal leg (both legs the same width) and unequal leg (legs of different widths) configurations. Manufactured from carbon steel or low-alloy steel, angle steel is produced by hot rolling or cold bending and is widely used for structural framing, bracing, and general fabrication. It offers excellent strength-to-weight ratio, ease of fabrication, and versatile connection options.

**2. Key Specifications**
- Material: Q235B, Q355B, SS400, ASTM A36, S235JR, S355JR
- Type: Equal Leg Angle / Unequal Leg Angle
- Leg Width: 20mm – 250mm (equal leg); 30×20mm – 200×125mm (unequal leg)
- Leg Thickness: 3mm – 35mm
- Length: 6m, 9m, 12m, or customized
- Surface Treatment: Hot-dip galvanized, pre-painted, or black (mill finish)
- Standards: GB/T 706, ASTM A36/A6, EN 10056, JIS G3192
- Tolerance: Per applicable standard (e.g., GB/T 706)

**3. Applications**
Widely used in building structures (roof trusses, purlins, bracing), transmission towers, communication towers, bridges, machinery manufacturing, shipbuilding, railway vehicles, container frames, warehouse shelving, and general metal fabrication. Also used for edge reinforcement, connection plates, and support brackets.

**4. Product Advantages**
- High strength-to-weight ratio provides efficient load-bearing capacity
- L-shaped profile offers excellent resistance to bending and torsion
- Easy to cut, drill, weld, and bolt for flexible fabrication
- Available in a wide range of sizes and thicknesses
- Hot-dip galvanized options provide long-term corrosion resistance
- Cost-effective compared to other structural sections
- Recyclable and environmentally friendly material

**5. Product Functions**
Angle steel serves as a structural member for load-bearing frames, bracing, and connections. It can be used independently as a beam, column, or strut, or combined with other sections to form built-up members. Its two perpendicular legs allow connections in two directions, making it ideal for corner joints, edge reinforcement, and support brackets.

**6. Instruction for Use**
- Verify the angle steel size, thickness, and material grade match the design requirements.
- Inspect for straightness, surface defects, and dimensional accuracy before use.
- Measure and mark cutting lines; use appropriate cutting methods (sawing, shearing, or plasma cutting).
- For welding: clean the surface, align the members, and follow the approved welding procedure.
- For bolted connections: drill holes accurately and use appropriate bolt grades.
- Apply surface protection (galvanizing, painting) as specified after fabrication.
- Check alignment and levelness during installation.

**7. Precautions**
- Do not subject the angle steel to impact or drop during storage and handling.
- Store in a dry, well-ventilated area; use supports to prevent bending or deformation.
- Keep galvanized angle steel away from contact with dissimilar metals to prevent galvanic corrosion.
- Do not use damaged or deformed sections; inspect for cracks before fabrication.
- Use appropriate personal protective equipment during cutting and welding.
- Ensure proper ventilation when welding galvanized angle steel.
- Follow design specifications for connection details and bolt torque.

**8. Shipping Information**
- Standard export packing: bundled with steel strips, or packed in wooden cases/pallets as required.
- Dispatch within 3–7 working days for stock items; 15–30 days for customized or bulk orders.
- Shipping methods: sea freight, rail freight, or truck transport depending on quantity and destination.
- Tracking number or shipping documents provided upon dispatch.

**9. Payment Terms**
- T/T (bank transfer): 30% deposit, 70% balance before shipment.
- L/C at sight accepted for larger orders.
- PayPal / Western Union for sample orders.
- All prices are quoted EXW or FOB unless otherwise specified.

**10. Packaging**
- Bundled with steel strapping for secure transport.
- Wooden cases or pallets available for export orders.
- Desiccant and moisture-proof wrapping for sea shipments.
- Custom labeling and marking available upon request.
- Ends protected to prevent damage during handling.

**11. Return & After-Sales Policy**
- 7-day return or exchange for quality defects (buyer bears return freight unless the defect is verified as our responsibility).
- Custom-made or non-stock items are not eligible for return unless defective.
- Warranty period: 12 months from delivery for manufacturing defects.
- Claims for shortage or damage must be reported within 3 working days of receipt with photo evidence.
- Technical support available for material selection, fabrication, and installation guidance.