supply of head stock for lhb type coach (with arrangement of biological tank), to rcf drawing.no.le11460 (sheet 1 to 4), alt. nil and rcf specification: mdts-21261, rev-03, the material of the top flange (rcf drg.no.le11284 & le11285) should be as per rdso/spec.ck201,designation / grade-x2crni12(ferritic steel) , head stock for lhb type coach (with arrangement of biological tank), to rcf drawing.no.le1 1460 (sheet 1 to 4), alt. nil and rcf specification: mdts-21261, rev-03, the material of the top flange (rcf drg.no.le11284 & le11285) should be as per rdso/spec.ck201,designation / grade-x2crni12(ferritic ste el).stage inspection: as per mdts-21261,rev-03 dt.20.03.2020, stage inspection is not to be followed for it em mentioned in the stage inspection clause 16(i)a & b as these two items are sub part of front part, not th e sub part of head stock,. [ warranty period: 72 months after the date of delivery ] ]