AST PIPES YST 310 Rectangular Hollow Section AST YST 310 MS RHS - (130 x 73 x 8 mm) - 6 mtr Length is produced by ERW cold-forming to IS 4923:2017 with a 130 mm x 73 mm cross-section and 8 mm wall thickness in standard 6 m lengths. Delivering a minimum yield of 310 MPa and tensile strength of 450 MPa, this RHS is engineered for heavy structural, high-load bearing frames, and primary column applications where directional load resistance and weld quality are critical. The four flat external faces and controlled corner radii simplify connection detailing and allow precise fit-up in fabricated beams, frames, and trusses.

• Grade YST 310 IS 4923:2017 certified RHS with guaranteed mechanical properties
• ERW process producing a continuous, sound weld seam along the full tube length
• Yield strength 310 MPa and tensile strength 450 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
• Available in a comprehensive range of sizes from light to heavy structural sections
• Standard 6 m lengths compatible with standard transport and storage infrastructure
• Good notch toughness and elongation properties for structural safety under impact loads
• Dimensional accuracy per IS 4923 tolerances ensuring interchangeable and reliable fit-up

• Primary structural spanning beams in warehouses and distribution centres
• Long-span truss chord members in airport terminals and exhibition pavilions
• Heavy structural beam framing in power stations and process plant facilities
• Structural sections for oil and gas platform topsides and primary deck beams
• Rail over-bridge and road bridge primary structural beam spanning members
• Heavy crane gantry spanning girders and crane main structural beam members
• Primary structural beams in stadiums, arenas, and long-span grandstand roofs
• Structural spanning sections in high-rise building perimeter and core frames