procurement of coal and oil firing equipments.-1 511310101b hea ignitor flexible guide tub hea ignitor flexible guide tube assy.id 38; l=2095 nos 10 2 511340313b stationary pivot pin stationary pivot pin nos 10 3 511340408b nt pin bearing nt pin bearing nos 20 4 511340511b flame scanner guide pipe assy flame scanner guide pipe assy k=2504 nos 30 5 511340513b twin ss flexible hose for scanner guide tube assembly .