supply of corten steel underframe (lwcbac pp & lwcb pp) , corten steel underframe complete for lwcb pp2 coaches with stainless st eel sole bar to drg no 85611001 col i alt h 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. with additional brackets for mounting 120ah battery box to drg no 98111006, alt c and bracket assembly to drg no 75611008, alt a. the schedule of technical requirement as per icf/md/spec-147 rev 02 with amendment no-02. special condition : packin g condition as per drg no icf/j&t/misc- 2487 alt b. the under frame should be supplied a s normal side up and side bearer side down details for satge inspection. (a) raw material stage # ensure the raw material used using portable spectrometer (b) jig stage # assembly of front p art with sole bar. # assembly of modular frame arrangement. # weld parameters to be checked & rec orded (c) trestle stage # marking, drilling & tapping of holes wherever necessary. # marking & placin g of detail items. # complete welding wherever necessary. # weld parameters to be checked & recor ded # assembly & welding of trough sheets. # dimensional & visual checks. # punching of serial no & ensuring proper traceability. (d) surface preparation and painting stage. # short/sand blast to the r equirements. # painting process as per the specification. # visual inspection. # final product inspecti on. note: application of aluminium welding coat to rcf spec mdts-28272 latest revision on top surfac e of cross members shall be ensured before welding the trough floor with cross members to avoid bi- metallic corrossion.[safety item} [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]