tender for procurement of protection shield of boiler tubes installed at boiler area of ,2x 660 mw,sstpp dongalia.(as per schedule) , protector sheild (tertiary superheater tube), sa 240 310s, protector - t3 id-45 mm,od-51mm, thk(mm) - 3, bend angle-60 deg, total length (mm) - 695.7 (as per drg no. sstpp/bmd-ii/001/sample) , protector sheild clamp (tertiary superheater tube), sa 240 310s, support- t3, id-45mm,od-51 thk(mm) - 3 total length - 40 mm (as per drg no. sstpp/bmd-ii/002/sample) , protector sheild (prh/srh), sa 240 310s, protector - t3,id-57.1 mm,od-63.1 mm, thk(mm) - 3 mm, bend angle-90 deg, total length (mm) - 1040 (as per drg no. sstpp/bmd-ii/001/sample) , protector sheild(rear wall hanger tube), sa 240 310s, protector - t3,id-48.6 mm,od-54.6 thk(mm) - 3 total length (mm) - 623 (straight) (as per drg no. sstpp/bmd-ii/001/sample)