STKR 250x250x9 STKR 250x250x9 Square / rectangular tube RHS 250 250 9 22.5 8397 65.9176 79827018 638616 749910 97.501 79827018 638616 749910 97.501 129133133 0.9613 0.9048 Pending verification – nominal dimensions entered by the application developer JIS G 3466 Carbon steel square and rectangular tubes for general structure 2026-10-12 UNVERIFIED Outer corner radius assumed as 2.5t for property calculation; confirm against JIS G 3466 Carbon steel square and rectangular tubes for general structure and the manufacturer catalogue. Typical grade: STKR400.