supply of corten steel underframe (lwcbac)corten steel underframe (lwcbac),corten steel underframe complete for lwcbac coaches with stainless steel sole bar to drg.no. 85611001, col.i, alt d. sole bar shall confirm to rdso specn.ck-201 corrigendum no-01 & amendment no-01 grade x2crni12 with yield strength of minimum 35 0 mpa the schedule of technical requirement as per icf/md/specn.147, rev-02 with amend ment-01. special condition : packing condition as per drg.no. icf/j&t/misc-2487 altb. the un derframe should be supplied as normal side up and side bearer side down. [safety item] [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]