Cold Formed ERW Rectangular Hollow Section

Tianjin Brisk Steel is one of the manufacturers of Cold Formed ERW Rectangular Hollow Section in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.

 PRODUCT

Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe

Sourcing structural hollow sections for international industrial codes requires a clear understanding of the mechanical and metallurgical principles behind the product:

• The High-Frequency Induction (HFI/ERW) Process: Our RHS lines utilize premium structural carbon steel strip coils that are progressively cold-rolled into shape at room temperature. The longitudinal seam is continuously forged using high-frequency electrical resistance. This molecular bonding process requires zero filler metals, ensuring the weld line retains structural characteristics identical to the parent steel body.

• The Structural Cold-Forming Advantage: Cold forming work-hardens the steel matrix, naturally increasing both the yield strength and tensile strength of the section compared to its raw sheet state. This provides an incredibly cost-effective alternative to hot-finished profiles for the vast majority of general civil and industrial framing applications.

• Uniform cross-section and tight tolerances facilitate easy installation and assembly;

• Lightweight, with superior bending and torsional resistance compared to solid structural steel sections;

• High production efficiency and better cost-effectiveness than seamless square or rectangular tubing;

• Available with various surface finishes: black (uncoated), painted, hot-dip galvanized, or pre-galvanized.

We supply and export certified rectangular steel tubes configured to standard international design matrices:

• Our Cold Formed ERW Rectangular Hollow Sections comply with the most widely recognized international industrial standards, including EN 10219, ASTM A500, fully meeting global market certification and engineering requirements.

• Available steel grades include S235JRH, S355J2H, ASTM A500 Grade B and Grade C.

• We support complete standard size specifications and customized non-standard sectional sizes and wall thicknesses.

• Multiple professional surface finishes are optional: black steel, pickled & oiled, painted, pre-galvanized and hot-dip galvanized, which effectively enhance anti-corrosion performance for different application scenarios.

We adopt fully automated cold forming and high-frequency ERW welding production lines to ensure consistent, industry-leading product quality. The entire manufacturing workflow covers precision strip uncoiling, continuous cold profiling, high-speed resistance welding, internal and external weld seam trimming, accurate straightening, fixed-length cutting and rigorous multi-stage quality testing.

The cold-forming process eliminates high-temperature deformation and surface oxidation, ensuring uniform section dimensions and burr-free flat surfaces. Meanwhile, advanced ERW welding technology creates ultra-strong, defect-free weld joints with mechanical properties fully matching the base steel material, delivering exceptional structural integrity and long-term service reliability.

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