ISO 657-18:1980

Hot-rolled steel sections — Part 18: L sections for shipbuilding (metric series) — Dimensions, sectional properties and tolerances

Gives the designation of L sections in an example and the dimensions and sectional properties in a figure and a table. Includes tolerances on height of web and width of flange, on web thickness, on flange thickness as well as the maximum permissible camber, the out-of-square, the tolerances on flatness and on length.