procurement of structural steel materials at sgtpp procurement of structural steel materials gratings, i beam etc for extension of raph busket washing bay unit-3 and 4 at sgtpp , procurement of structural steel materials ( gratings, i beam etc ) for extension of raph busket washing bay [ unit-3 & 4 ] 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 ) , pipe, ms, dn 80mm, 3inch nps, asme b36.10m dimensions as per schedule 40 ( heavy ( class-c ) ) , sailhard wear resist. ms plate, 16 mm thk # sailhard or equivalent ms hardened plates. surface hardness or core hardness shall be at least 200 bhn. ( is: 2062, grade:a , 2 / 6 meter )