Quenching and tempering high tensile steel bs en10025-6 s500ql S500ql is in the standard of bs en10025-6 . Bs en10025-6 main series steel grades includes the following : s460q, Dimension range:2mm -280mm x 1000mm-4000mm x 1000mm-18000mm . Stock : some are available Mtc: available Payment term : t/t or l/c at sight