supply of galvanized steel pipes & tubes nominal bore dia. 15 mm etc..galvanized steel pipes & tubes nominal bore dia. 15 mm etc..,galvanized steel pipes & tubes isi marked in random length of 4 to 7 meters, screwed at both ends, socketed at one end and other end screwed protected with plastic protector, nominal bore dia. 15 mm, medium class. sockets shall also be isi mark. material and specification : is: 1239 (pt. 1): 2 004 (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 ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] workshop carriage stores/kgp, west bengal 2000.00 metre