supply of square tube of size 20x20x2mm, of length 6 metres, confirming to rdso specification c-k201 (gr-409),amendment -1, and to rcf drawing no.m1007809, alt.nil.square tube of size 20x20x2mm, of length 6 metres, confirming to rdso specification c-k201 (gr-409),amendment -1, and to rcf drawing no.m1007809, alt.nil.,square tube of size 20x20x2mm, of length 6 metres, confirming to rdso specification c-k20 1 (gr-409),amendment -1, and to rcf drawing no.m1007809, alt.nil. [ 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 ] ] => limited