supply of td-912b & tb-912 , td-912b:- authority to proceed on automatic block system during prolonged failure of si gnals, size: 30 cm x 42 cm (a3), 200 leaves (100 sets). text printing one side in red ink, bilingual (hin di & english) with pl no. & duplicate machine serial numbered in 6 digits as per alpha numeric series, o ver 60 gsm white maplitho paper conforming to is 1848/2007 as amended up to december 2016 or lat est. binding - side stitched with kraft paper 130 gsm conforming to is 1397/90 grade -ii (mg) as cover page. supply should be in a bundle of 10 nos. each with strapping. sample of text matter and serial no . will be provided by smm/gsd/bpl. proof reading must be done by supplier. sample of printed materia l along with proof reading certificate and serial no. should be submitted by supplier . final approval by submission of 02 printing books must be obtained from office of smm/gsd/bpl before bulk manufacturi ng. form number, description and serial number should be printed on the cover page of the book. [ wa rranty period: 30 months after the date of delivery ] ] , tb-912:- authority to proceed with out line clear on automatic block signalling territories, size: 30 cm x 42 cm (a3) , 200 leaves (100 sets). text printing both side in red ink, bilingual (hindi & e nglish) with pl no. & duplicate machine serial numbered in 6 digits as per alpha numeric series, over 60 gsm white maplitho paper conforming to is 1848/2007 as amended up to december 2016 or latest. bin ding - side stitched with kraft paper 130 gsm conforming to is 1397/90 grade -ii (mg) as cover page. s upply should be in a bundle of 10 nos. each with strapping. sample of text matter and serial no. will be provided by smm/gsd/bpl. proof reading must be done by supplier. sample of printed material along with proof reading certificate and serial no. should be submitted by supplier . final approval by submi ssion of 02 printing books must be obtained from office of smm/gsd/bpl before bulk manufacturing. fo rm number, description and serial number should be printed on the cover page of the book. [ warrant y period: 30 months after the date of delivery ] ]