Rectangular Hollow Section Steel Pipe - Mill Direct Supplier

As a trusted rectangular hollow section steel pipe supplier, we deliver mill-direct structural tubing engineered to meet the rigorous demands of modern construction, infrastructure, and industrial fabrication projects worldwide. Rectangular hollow section (RHS) steel pipe has become the structural profile of choice for architects, engineers, and fabricators who require a precise balance of load-bearing strength, dimensional consistency, and aesthetic versatility. Our RHS steel pipes are produced under internationally recognized standards — including EN 10219, ASTM A500, AS/NZS 1163, and GB/T 6728 — ensuring every section performs reliably whether it is integrated into a high-rise framework, a heavy-duty machinery chassis, or a modular bridge component. By sourcing directly from our own rolling mills, we eliminate intermediary markups, giving buyers access to cost-effective mill-direct rates without compromising on certified quality. With decades of metallurgical expertise and a global logistics network, we are positioned to fulfill both small-batch orders and large-scale project requirements on schedule.

What is Rectangular Hollow Section Steel Pipe?

A rectangular hollow section steel pipe is a closed-profile structural tube with a rectangular cross-section and uniform wall thickness on all four sides. Manufactured through cold-forming or hot-forming processes from carbon steel, low-alloy steel, or weathering steel coils, RHS pipes deliver excellent bending resistance along both axes. The hollow core reduces overall weight compared to solid bar stock, making them ideal for span-critical and weight-sensitive structural applications. Standard yield strengths range from 235 MPa (Grade S235) to 420 MPa (Grade S420), with tensile strengths typically spanning 360 MPa to 550 MPa depending on the specified grade and forming process.

Rectangular Hollow Section Steel Pipe Technical Specifications

Our rectangular hollow section steel pipe inventory covers a broad dimensional range to accommodate diverse engineering requirements. Wall thickness tolerances are held to ±10% per EN 10219-2, and straightness deviation does not exceed 0.15% of total length. All sections undergo hydrostatic or eddy-current non-destructive testing prior to dispatch, and full mill test reports (MTRs) are provided with every shipment.

Beyond standard inventory, our mill capabilities support custom rolling schedules for non-standard widths, heights, and wall thicknesses. Value-added processing services — including plasma cutting, shot blasting, galvanizing, and bundling — are available to reduce your downstream fabrication time and costs. Every batch is traceable from raw coil to finished section, with full chemical composition and mechanical property documentation.