supply of steel tubes galvanised,steel tubes galvanised,,steel tubes galvanised isi marked to is:1239 (part-i):2004 in random lengths of 4 to 7 metres, screwed at both ends as per is:554/1999, socketed at one end & other end protected with plas tic protector, in the following nominal bores & classes, , nominal bore size 25 mm. class-medium. [ wa rranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] , steel tubes galvanised, isi marked to is:1239 (part-i):2004 in random lengths of 04 to 07 meters, screwed at both ends as per is:554:1999, socketed at one end & other end protected with p lastic protector, in the following nominal bore 40 mm, medium class. [ warranty period: 30 months a fter the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]