g and tempering, and at the same time with -20 degree temperature impact test, " l " means low temperature (-40 degree )impact test , l1 means -60 degree temperature. Bs en10025-6 s550ql information: Standard:bs en10025-6 Steel grade: s460q, s460ql, s460ql1, s500q, s500ql, s500ql1, s550q, s550ql1, s620q, s620ql, s620ql1, s690q, s690ql, s690ql1, s890q, s890ql , s890ql1, s960q, s960ql, s960ql1 steel. Moq: 1 pc Delivery time : promptly ( stock) or 10-40 days (production) Stock : some are available Mtc: available Payment term : t/t or l/c at sight Bs en10025-6 s550ql the delivery status:q&t (quenching and tempering)