Q195 Rectangular Pipe: A Comprehensive Overview The Q195 rectangular pipe is a widely used structural component in various industries due to its versatility, durability, and cost-effectiveness. Made from Q195 carbon steel, this rectangular hollow section (RHS) offers excellent mechanical properties, making it suitable for construction, manufacturing, and infrastructure projects. Material Properties Q195 is a low-carbon steel grade with good plasticity, weldability, and moderate strength. Its chemical composition typically includes carbon (≤0.12%), manganese (≤0.50%), silicon (≤0.30%), and trace amounts of sulfur and phosphorus. The low carbon content ensures ease of fabrication, while the manganese enhances toughness. Manufacturing Process Q195 rectangular pipes are produced through two primary methods: 1. Hot-rolled forming – Steel strips are heated and shaped into rectangular profiles, then welded longitudinally. This process ensures high strength and uniformity. 2. Cold-formed processing – Cold-rolled steel coils are bent into shape at room temperature, resulting in precise dimensions and a smooth surface finish. Both methods yield pipes with consistent wall thickness, straight edges, and excellent structural integrity. Key Features & Advantages - High Strength-to-Weight Ratio: Ideal for load-bearing structures without excessive weight. - Corrosion Resistance: Can be galvanized or painted for enhanced durability in harsh environments. - Ease of Fabrication: Easily cut, welded, drilled, or bent to meet project requirements. - Cost-Effective: Affordable compared to other structural materials like aluminum or stainless steel. Applications Q195 rectangular pipes are widely used in: - Construction: Frames, supports, and scaffolding. - Automotive: Chassis and roll cages. - Furniture: Modern designs requiring sleek, sturdy frames. - Infrastructure: Guardrails, signage, and drainage systems. Standards & Specifications These pipes comply with international standards such as ASTM, JIS, and GB, ensuring dimensional accuracy and performance reliability. Common sizes range from 20×10mm to 200×100mm, with varying wall thicknesses (1.2mm to 6mm). Conclusion The Q195 rectangular pipe is a fundamental building material, valued for its adaptability and efficiency. Whether in industrial frameworks or decorative applications, its balance of strength, workability, and affordability makes it indispensable across multiple sectors. Proper selection based on project needs ensures optimal performance and longevity.