Conforming to IS 4923:2017 Grade YST 355, the Hariom MS SHS Hariom YST 355 MS SHS - (91.5 x 91.5 x 4.5 mm) - 6 mtr Length is a precision ERW square hollow section with 91.5 mm outer dimension and 4.5 mm wall thickness in 6 m mill lengths. Achieving 355 MPa yield and 490 MPa UTS, it is ideal for high-strength structural columns, heavy industrial frames, and demanding load-bearing applications where equal biaxial stiffness and compact structural geometry are required.

• IS 4923:2017 Grade YST 355 ERW SHS with certified mechanical properties
• Minimum 355 MPa yield and 490 MPa UTS meeting IS structural design requirements
• Precise square geometry enabling flush-face connections without packing
• Consistent wall thickness for uniform stress distribution on all four sides
• Suitable for cold punching, drilling, sawing, and plasma cutting on site
• Batch-to-batch dimensional consistency per IS 4923 tolerances

• High-strength primary columns in multi-storey structural construction
• Main chord members in heavy roof trusses and long-span frame structures
• Primary column sections in CFT composite construction systems
• Heavy conveyor gallery columns and primary structural post frame sections
• Structural members in shipbuilding, marine, and offshore fabrication
• Structural portal frame primary columns in large industrial buildings