30*50mm Galvanized Rectangular Tube (Q345 Material, 2.5mm Wall Thickness)

Product Overview

The 30*50mm Galvanized Rectangular Tube is manufactured from Q345 material with a 2.5mm wall thickness. This tube features a rectangular cross-section suitable for structural applications.

Specifications

Dimensions

• Outer dimensions: 30mm x 50mm
• Wall thickness: 2.5mm
• Inner dimensions: 25mm x 45mm

Weight and Length

• Standard length: 6 meters
• Weight per meter: Approximately 2.45 kg/m

Tolerances

• Dimension tolerance: ±0.5mm
• Wall thickness tolerance: ±0.1mm
• Straightness: 0.1% of tube length

Material Properties

Q345 is a low-alloy high-strength structural steel with a minimum yield strength of 345 MPa. It offers good weldability and machinability. Key mechanical properties include:

• Tensile strength: 470-630 MPa
• Elongation: ≥21%
• Impact toughness: ≥34 J at -20°C

Surface Treatment

The tube undergoes hot-dip galvanization with a zinc coating thickness of 50-80 μm, providing corrosion resistance. The coating meets ASTM A123 standards for durability in outdoor environments.

Applications

• Construction frameworks and supports
• Machinery guards and enclosures
• Agricultural equipment structures
• Fencing and railing systems

Asia Metal supports customization of different sizes and specifications for steel products to meet specific project requirements.