Hollow Rectangular Pipe

Wuxi Chengxingchuang Metal Products Co., Ltd. produces hollow rectangular pipes, which are long, hollow steel strips made from Q235G steel coils through cold bending and high-frequency welding. Rectangular hollow sections offer high bending and torsional strength while being lightweight, making them widely used in machinery manufacturing, construction engineering, automotive chassis, glass curtain walls, solar panel supports, and other fields. Hollow rectangular pipes support customized processing and cutting to meet diverse needs.

 High Strength and Lightweight

The rectangular cross-section design enhances bending stiffness, resulting in a 15%-20% lighter weight compared to round tubes under the same load-bearing capacity, making it suitable for weight-sensitive applications.

 Excellent Corrosion Resistance

The aluminized magnesium-zinc coated tube uses a 55% aluminum, 43.4% zinc, and 1.6% silicon alloy coating, offering a lifespan 3-6 times longer than ordinary galvanized tubes in corrosive environments such as marine and industrial settings.

 Strong Customization Capabilities

Customization of variable cross-section rectangular tubes is supported. Special-shaped tubes and cold-formed steel sections can be fabricated according to drawings to meet complex structural requirements.

 Convenient Processing

Seamless rectangular tubes are produced through hot rolling and cold drawing processes, eliminating weld stress concentration issues and allowing for direct secondary processing such as cutting, drilling, and welding.

 Raw Material Control

Strategic partnerships with renowned steel mills such as Baosteel and Ansteel ensure that the chemical composition of raw materials meets the GB/T 6728-2017 standard.

 Production Testing

Process control: High-frequency welding temperature ≥1350℃ ensures weld penetration; cold drawing process employs multi-pass stretching to guarantee dimensional accuracy ±0.1mm.

 Testing Procedure

Each batch of products undergoes mechanical property testing, coating thickness testing, and salt spray testing.

 Certification System

ISO 9001 quality management system certified; products comply with EU CE standards; third-party testing reports from SGS, TÜV, etc., are available.

1. Building Construction

Glass Curtain Wall Support: Seamless rectangular tubes offer high load-bearing capacity and are used for the support structure of high-rise building curtain walls.

Steel Structure Workshops: Galvanized rectangular tubes are used as purlins and inter-column supports, offering corrosion resistance and easy installation.

2. Machinery Manufacturing

Automotive Chassis: High-strength steel rectangular tubes reduce vehicle weight and improve fuel economy.

Agricultural Machinery: Aluminum-magnesium-zinc coated tubes are used for greenhouse frames, with a lifespan exceeding 20 years.

3. Energy Sector

Solar Support System: S350GD aluminum-magnesium-zinc coated tubes offer strong weather resistance and are suitable for harsh environments such as deserts and coastal areas.

Power Engineering: Thick-walled rectangular tubes are used as cable trays, supporting high-voltage cables without deformation.

• Galvanized pipes: Hexagonally bundled, covered with rainproof film, and padded with wooden blocks at the bottom for moisture protection.
• Precision pipes: Individually wrapped in plastic bags, multi-layered packaging, and then placed in wooden crates to prevent scratches during transporta

1. Quality Assurance

Warranty Period: 10 years for galvanized pipes, 25 years for aluminum-magnesium-zinc coated pipes. Free replacement of rusted pipes within the warranty period.

Returns and Exchanges: Response within 48 hours, return/exchange completed within 7 business days.

2. Technical Support

Provide installation manuals and video tutorials to assist customers in solving construction problems.

For complex projects, dispatch a technical team for on-site support.