The Hariom MS SHS Hariom YST 355 MS SHS - (150 x 150 x 4 mm) - 6 mtr Length is produced to IS 4923:2017 Grade YST 355 by ERW cold-forming, offering 150 mm outer dimensions and 4 mm wall thickness in standard 6 m lengths. Guaranteed at 355 MPa yield and 490 MPa UTS, this square hollow section provides equal stiffness in all planes for dependable high-strength structural columns, heavy industrial frames, and demanding load-bearing applications.

• IS 4923:2017 Grade YST 355 certified with mill test documentation
• Minimum yield 355 MPa and UTS 490 MPa for structural design compliance
• ERW cold-forming ensuring consistent wall thickness on all four faces
• Equal stiffness about both axes for symmetric multi-directional loading
• Smooth surface for painting, powder coating, or hot-dip galvanizing
• Standard 6 m lengths; weldable by MIG, TIG, and SMAW processes

• Heavy structural columns in large industrial and high-rise buildings
• Offshore and marine primary structural deck columns and post members
• High-load transmission tower primary leg and vertical post sections
• Crane runway primary columns, gantry supports, and hoist beam posts
• Bridge deck primary circular support columns and long-span post members
• High-strength frames in petrochemical and heavy industrial plant structures