The AST PIPES YST 310 MS SHS AST YST 310 MS SHS - (90 x 90 x 2 mm) - 6 mtr Length is produced through the ERW cold-forming process to meet IS 4923:2017 requirements, offering a 90 mm square section with 2 mm wall thickness and 6 m standard length. With a certified yield strength of 310 MPa and tensile strength of 450 MPa, this hollow section delivers consistent mechanical performance for heavy structural, high-load bearing and column applications. The uniform square profile simplifies connection detailing and allows for efficient material utilisation in welded and bolted fabrications.

• IS 4923:2017 Grade YST 310 compliant with traceable mechanical test certificates
• ERW welded with controlled heat input for uniform weld zone properties
• Certified yield strength of 310 MPa for structural engineering design calculations
• Biaxially symmetric square profile simplifying connection and joint detailing
• Consistent wall thickness across all four sides ensures uniform load transfer
• Clean mill finish receptive to all protective coating systems including epoxy
• Standard 6 m cut lengths minimising on-site material wastage and joints
• Compatible with conventional bolted, welded, and mechanical fastening systems
• Low carbon equivalent supporting good cold-forming and field weldability
• UTS of 450 MPa providing adequate reserve strength under overload conditions

• Primary load-bearing columns in commercial and high-rise buildings
• Structural main chords in long-span trusses and lattice girders
• Foundation pile cage formers and structural column starters
• Heavy-duty equipment support frames in power and process plants
• Rail infrastructure structural members for overhead line equipment
• Crane rail support girders and hoist beam structural members
• Primary structural framing for sports arenas and large spans
• Structural members in petrochemical and heavy industrial pipe racks