Tender For supply of 1)ms square tube 20x20x2 mm to specification is 4923-97 with latest amendment no: 1, hf shs, grade yst 210, to be supplied in specific length of 6 meters. the tube shall be oiled externally with rust preventive oil.2)ms square tube 25x25x2mm, length- 6 metres as per is: 4923-97.the tube shall be oiled externally with rust preventive oil.3)ms square tubes of size 45 x 45 x 2.6 mm of 6 meters length to is specn no. is: 4923/1997 with hf shs yst-240. the tube shall be oiled externally with rust preventive oil.4)ms square tube 49.5 x 49.5 x 3.15mm to specn is 4923-97 with latest amendment no: 1 hf shs grade yst 210 in specific length of 6.00 mtrs. the tube shall be oiled externally with rust preventive oil.