procurement of structural steel materials for extension of raph busket washing bay on under bm2 dept. at sgtpp procurement of structural steel materials (gratings, i-beam etc.) for extension of raph busket washing bay on under bm2 dept. at sgtpp , procurement of structural steel materials (gratings, i-beam etc.) for extension of raph busket washing bay on under bm2 dept. at sgtpp , gi gratings ( size: l=3000 mm, w=1500 mm, width/depth of load bar: 30 mm, load bearing bar spacing: 32 mm, cross rod pitch: 100 mm. ) , i beam,ismb 150 ( length not less than 6mtr.(make:sail/jindal/tata/rinl).is:2 062 grade-a. ) , i - section beam 300x140 mm ( is: 2062, grade:a make: sail/tata/jindal/rinl. ) , ms erw pipe 15 mm heavy duty ( 2.65 mm thick, medium duty(b-class), wt: 1.21 kg/mtr grade: is 1239, minimum length: 6 mtr. ) , ms erw pipe 20 mm ( 2.65 mm thick, medium duty(b-class), wt: 1.58 kg/mtr grade: is 1239, minimum length: 6 mtr make: sail/tata/jindal/rnil. ) => limited