supply of pipe 32 n.b. with flanges & sockets (welded assembly)pipe 32 n.b. with flanges & sockets (welded assembly),pipe 32 n.b. with flanges & sockets (welded assembly) for freight stock to rdsos drg. no. wd-80007-s-11, alt-12, item no. 2, 12 & 13. flanges and socket to rdso drg. no. wd-83062-s-07 , alt.6, items 2 & 3. other technical requirements confirming to specification no. 04-abr-2019. mate rial specification of pipes as under, pipes 32 nb:-seamless to is: 1239 (part-i):2004 with amendment 1 to 6, heavy grade or astm a-106 gr.a. socket & flange:-is: 2062-2011, amendment 1 of nov.2012, gr . e 250 a for 32 nb pipe. [ 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 ] ]