supply of galvanized steel pipes & tubes, length 6 meters.galvanized steel pipes & tubes, length 6 meters.,galvanized steel pipes & tubes isi marked, length 6 meters, screwed at both ends, sock eted at one end and other end screwed protected with plastic protector, nominal bore dia. 15 mm, me dium class. sockets shall also be isi mark. drawing no.: _ _ _ _ _ _ _ _ _ mat. & spec: is: 1239 (pt. 1): 20 04 (rev. 6), amend. no. 6 of june 2021 for tube; is: 1239 (pt. 2): 2011 (rev. 5), amend. no. 3 of marc h 2016 for socket; and is: 554:1999 (rev. 4) , amend. no. 1 of oct. 2009 for screw [ warranty perio d: 30 months after the date of delivery ] ] coaching depot stores/src, west bengal 200.00 metre