Pre-Galvanized Hollow Section Supplier | Reliable Steel Pipe Solutions
Publish Time: 2025-07-07 Origin: Site
In modern architecture and steel structure engineering, the selection of materials directly impacts the stability of the structure, construction efficiency, and long-term maintenance costs. Pre-galvanized hollow section steel pipes (Pre-Galv. Hollow Section), with their excellent corrosion resistance, high strength, and ease of processing, are becoming an ideal choice in the construction industry.
I. Structural Characteristics of Pre-Galvanized Hollow Section Steel Pipes
Pre-galvanized hollow section steel pipes are manufactured by cold-forming pre-galvanized steel strips into square or rectangular tubes, followed by high-frequency welding. During the welding process, if the galvanized coating on the outer surface is damaged, metalizing repair methods such as spraying molten zinc wire can be applied to restore the zinc layer, further enhancing corrosion resistance.
Common size ranges from 12×12 mm to 500 mm, with wall thicknesses available from 0.6 mm to 20 mm, meeting diverse engineering requirements for load-bearing and pressure resistance. The product is typically made of carbon structural steel grades Q195–Q235, offering excellent plasticity and weldability.
II. Quality Standards for Surface Galvanized Coating
To ensure the product exhibits excellent corrosion resistance during use, the zinc coating on pre-galvanized steel sheets must comply with ASTM A525 standards, specifically meeting the G90 or G120 grade requirements. This means the total weight of the zinc coating on both sides (inner and outer) should reach 0.90 oz/sq.ft to 1.20 oz/sq.ft, effectively extending the service life of the tubing in humid, acidic/alkaline, or outdoor environments.
III. Main Application Areas of Pre-Galvanized Hollow Steel Pipes
Building Structural Frameworks: Due to their compact structure and high load-bearing capacity, they are widely used in steel structural components such as factory frameworks, warehouse racks, and outdoor sunshades.
Municipal and Transportation Engineering: Suitable for road barriers, bridge railings, columns, and advertising sign supports, offering excellent weather resistance and aesthetic appeal.
Agricultural and Horticultural Facilities: Frequently used in greenhouse frames, trellises, and water pipe support systems, as they can withstand certain loads while providing strong rust resistance.
Furniture and Decorative Engineering: Square and rectangular pipes, with their sleek appearance and customizable lengths, are also widely applied in modern metal furniture, guardrails, and industrial-style decorative projects.
IV. Product Advantages of Met Company
As a professional metal steel pipe supplier, Met Company leverages advanced production processes and a rigorous quality control system to provide high-quality pre-galvanized hollow steel pipe solutions for customers. Our products offer the following outstanding advantages:
• Customizable Sizes: Available in dimensions ranging from 12x12mm to 500mm, with customizable length and wall thickness based on project requirements.
• Strict Quality Testing: Every batch of products undergoes multiple performance tests, including tensile strength, compression resistance, and surface coating quality.
• Extensive Global Export Experience: Our products are well-received in Southeast Asia, the Middle East, South America, and other regions, earning widespread praise from customers.
Metal Company remains committed to the principle of "Quality First, Customer Supreme," delivering more reliable and durable metal solutions to customers worldwide. If you have any procurement or customization needs, please feel free to contact us for a free quotation and technical support.