The Hariom YST 355 Rectangular Hollow Section Hariom YST 355 MS RHS - (180 x 70 x 5.4 mm) - 6 mtr Length is cold-formed and ERW-welded to IS 4923:2017 specifications, presenting a 180 mm x 70 mm outer dimension with 5.4 mm wall thickness in standard 6 m lengths. With guaranteed mechanical properties of 355 MPa yield and 490 MPa tensile strength, this RHS serves as a reliable structural component for high-strength structural beams, heavy industrial frames, and demanding spanning applications. The closed rectangular cross-section imparts excellent major-axis bending stiffness and torsional rigidity, enabling efficient span and cantilever designs with predictable structural performance.

• Grade YST 355 IS 4923:2017 certified RHS with guaranteed mechanical properties
• ERW process producing a continuous, sound weld seam along the full tube length
• Yield 355 MPa and tensile 490 MPa for design-critical structural applications
• Rectangular hollow geometry offering high section modulus-to-weight ratio
• Greater depth enables increased span capacity and reduced structural deflection
• Mill surface suitable for direct fabrication, painting, or hot-dip galvanizing treatment
• Comprehensive range of sizes from light profiles to heavy structural sections
• Standard 6 m lengths compatible with standard transport and storage infrastructure
• Good notch toughness and elongation for structural safety under impact loads
• Dimensional accuracy per IS 4923 tolerances for interchangeable and reliable fit-up

• Primary structural spanning beams in warehouses and distribution centres
• Long-span truss chord members in airports and large public hall structures
• Structural sections for oil and gas platform topsides and primary deck beams
• Rail and road bridge primary structural beam and girder spanning sections
• Heavy crane gantry spanning girders and crane main structural beam members
• Primary structural beams in stadiums, arenas, and long-span grandstand roofs
• High-axial-load beam members in transfer floors of high-rise buildings
• Structural spanning sections in high-rise building perimeter and core frames