The RR MetalMakers YST 310 MS SHS - (135 x 135 x 4 mm) - 6 mtr Length is a structurally certified Square Hollow Section from RR MetalMakers in YST 310 mild steel, manufactured to the requirements of IS 4923:2017 (Hollow Steel Sections for Structural Use). This 135 mm × 135 mm × 4 mm section in 6 m standard lengths delivers equal performance under axial compression, bending, and torsion — ideal for heavy-duty structural, high-load, and long-span applications. With a minimum yield of 310 MPa and tensile strength of 450 MPa, it supports efficient structural design and reduced material usage without compromise in safety.

• Certified YST 310 grade ERW SHS meeting all structural requirements of IS 4923:2017
• Precise 135 mm × 135 mm × 4 mm hollow section with well-defined corner geometry and sharp edges
• Wall thickness 4 mm maintained within tight IS tolerances along the full length
• Consistent ERW weld quality: clean, flush seam on both internal and external faces
• Tensile strength 450 MPa for reliable performance under design structural loads
• Standard 6 m cut lengths with square ends for accurate joint detailing
• Suitable for structural, architectural, and general engineering fabrication applications
• Weld-ready surface with minimal surface scale from prime coil input
• Equal bi-axial bending capacity enables simplified structural analysis and design
• Full quality documentation: heat number, grade, dimensions, and mechanical report available

• Residential and commercial building columns, staircases, and balustrade posts
• Machinery guards, safety enclosures, and protective barriers in factory environments
• Electrical substation structures, cable tray supports, and bus bar housings
• Multi-level car park columns, flyover parapet posts, and crash barrier uprights
• Water treatment and sewage plant structural frameworks and walkway supports
• Event and exhibition temporary structures, stage frameworks, and rigging towers
• General fabrication: custom brackets, support columns, gussets, and structural inserts