procurement of metallic expansion joints to be use in hot primary air duct in the boiler of 2x660 mw ph-ii, sstpp, dongalia , metallic expansion joints , rectangular expansion joint for primary air duct pressure: +1450/-660 mmwc temprature: 375°c duct size (i/s) 4200x3350, overall length 400 mm type: universal axial rectangular mej with weldable end, 2+2 convolute bellow element- ss 316 thk 1.5 mm sleeve- is 2062 thk 5 mm weld able ends & center duct- is 2062 thk 6 mm shipping bracket & spider - is 2062 (ar) paint= 2 coats of ro preimer supply in four part , rectangular expansion joint for primary air duct pressure: +1450/-660 mmwc temprature: 375°c duct size (i/s) 4200x3350, overall length 1000 mm type: universal axial rectangular mej with weldable end,3+3 convolute bellow element- ss 316 thk 1.5 mm sleeve- is 2062 thk 5 mm weld able ends & center duct- is 2062 thk 6 mm shipping bracket & spider - is 2062 (ar) paint= 2 coats of ro preimer supply in four part , rectangular expansion joint for primary air duct pressure: +1450/-660 mmwc temprature: 375°c duct size (i/s) 4900x3600, overall length 1250 mm type: universal axial rectangular mej with weldable end,3+3 convolute bellow element- ss 316 thk 1.5 mm sleeve- is 2062 thk 5 mm weld able ends & center duct- is 2062 thk 6 mm shipping bracket & spider - is 2062 (ar) paint= 2 coats of ro preimer supply in four part , rectangular expansion joint for primary air duct pressure: +1450/-660 mmwctemprature: 375°c duct size (i/s) 1900x2300, overall length 300 mmtype: universal toggle axial rectangular mej with weldable end,2+2 convolutebellow element- ss 316 thk 1.5 mmsleeve- is 2062 thk 5 mmweld able ends & center duct- is 2062 thk 6 mmshipping bracket & spider - is 2062 (ar)paint= 2 coats of ro preimersupply in four part