supply of inner shell , inner shell to wap drg.no.731091710030 with special conditions:(1) the req uired raw materials shall be sourced from reputed sources such as m/s sail, tisco, isp& t, ismt, jindal, msl, kalyani, tata. procurement invoices shall be submitted along with th e supply.( 2) the firm has to submit the mtc for chemical composition along with supply. (3) the firm should leave a sample piece as an integral part of the supply for testing th e material at rwf end. (4) the material shall be warranted for a period of 12 months fr om the date of supply or 18 months from the date of fitment, whichever is earlier. [ wa rranty period: 12 months after the date of delivery ] ]