procurement of different spares of wall soot blower for unit#4 overhauling at sgtpp procurement of different spares of wall soot blower and deslagger (model no. - wb- 1e) for u4overhauling at sgtpp , procurement of different spares of wall soot blower / deslagger (model no. - wb-1e) for unit#4 overhauling at sgtpp , head assy,sbv # sbv head assembly of wall deslagger ( model : wb-1e) , valve stem assembly for sbv head of wall deslagger model no- wb - 1e bhel drawing no:3 -20-20i -00173 & part no-02 , packing gland for sbv head of wall deslagger model no- wb-1e bhel drawing no:4-20-20i-00196 & part no-12 , gland bush d33x45 for sbv head of wall deslagger model no- wb - 1e bhel drawing no:4-20-20i-00197 & part no-04 , valve stem cap for sbv head of wall deslagger model no- wb - 1e bhel drawing no:4-20-20i-00198 & part no-09 , retainer, spring for sbv head of wall deslagger model no- wb - 1e bhel drawing no:4-20-20i -00193 & part no-08 , spring sbv head of wall deslagger model no- wb - 1e bhel drawing no:4-20-00i -00061 & part no-10 , rack gear housing assy # of wall blower-wb-1e , swivel tube assy of wall blower -wb-1e # , rotary gear box assy # wall deslagger, model no -wb-1e