Cold Formed Rectangular Steel Tube

Cold Formed Rectangular Steel Tubes are manufactured from high-quality carbon steel or alloy steel strips using precision cold bending and high-frequency resistance welding (ERW/HFW) processes. They are widely used in building steel structures, machinery, automotive parts, and industrial engineering.

High Dimensional Precision: Utilizes precision cold bending forming technology, strictly controlling dimensional accuracy, straightness, and wall thickness tolerances.

High Structural Strength: Selects high-quality structural steel and combines it with high-frequency welding technology to ensure weld stability and overall load-bearing capacity.

Multiple Standards Support: Supports ASTM, EN, JIS, GB/T, and other standard systems, and offers a variety of steel grades, specifications, and surface treatment options.

Raw Material Inspection: After steel coils arrive at the factory, they undergo material certification, chemical composition, and mechanical property testing to ensure they meet standard requirements.

Cold Bending Forming: Steel strips are processed into rectangular cross-sections using continuous forming equipment to ensure dimensional stability and product consistency.

High-Frequency Welding: Stable welds are formed using ERW/HFW welding processes, and weld inspections are performed according to requirements.

Sizing and Straightening: Dimensions are adjusted using sizing and straightening equipment to ensure products meet tolerance requirements.

Finished Product Inspection: Dimensional, surface, and performance tests are performed before shipment to ensure consistent product quality.

Raw Material Traceability: Steel mill material certificates (MTC) are provided to ensure traceability of material origin and performance.

In-Process Quality Inspection: Dimensions, wall thickness, weld quality, and surface quality are inspected during production to control production deviations.

Finished Product Performance Testing: Tensile testing, flattening testing, bending testing, eddy current testing, and third-party inspection support are available.

Specification Customization: Supports customization of dimensions, wall thickness, length, and steel grade to meet diverse project requirements.

Surface Treatment Customization: Offers anti-corrosion solutions including black pipe, oiling, hot-dip galvanizing, painting, and powder coating.

Export Packaging Customization: Supports steel strapping, moisture-proof packaging, pipe end protection, and optimized container loading.

Export Standard Packaging: Employs steel strapping, moisture protection, and export packaging methods to reduce the risk of damage during transportation.

Flexible Transportation Solutions: Supports FOB, CIF, and CFR trade terms, and provides full container load (FCL) and mixed container load (MCL) transportation solutions.

1. Advanced Production Equipment
We operate multiple high-frequency welded (HFW) pipe production lines capable of manufacturing round, square, and rectangular steel pipes. We are also equipped with cold-roll forming units for producing custom-profile sections. Downstream processing capabilities include precision cutting-to-length, punching, straightening, and surface treatment systems.

2. Guaranteed Quality
We supply certified products that meet standards such as EN 10219, ASTM A500, and ISO 1461 to engineering contractors and end-users.

3. Comprehensive Standards and Documentation
We manufacture products in accordance with ASTM, EN, DIN, JIS, and GB standards. We provide MTCs and EN 10204 3.1 certificates, and support third-party inspections by agencies such as SGS, BV, and TÜV.