Tender For corrigendum : supply of square hollow sections of specification is4923 yst240 - shs 220x220x5 as per is 4923 length required 10 meter , shs80x80x4 as per is 4923 length required 10 meter , shs 100x100x4 as per is 4923 length required 10 meter , shs 132x132x4.8 as per is 4323 length required 10 meter , shs 38x38x4 as per is 4923 length required 10 meter , shs 72x72x4 as per is 4923 length required 10 meter , shs 50x50x4.5 as per is 4923 length required 10 meter , shs 60x60x4 as per is 4923 length required 10 meter