procurement of various erosion protection sleeves (shield) and other spares for boiler of unit no. 10 and 11 ph-iv, stps, mppgcl, sarni. mppgcl , various protection sleeves and spares for hp tubes of boiler , erosion protection shield (sleeve) for arch tubes of boiler material- ss304 size l-1000, d-80, d-76 , b-05 (as per enclosed drawing no. bmd-iv/004a/item no. 1) , erosion protection shield (sleeve) for h.p. tube [economizer] material- ss304 size l-1000, d-48, d-44, b-05 (as per enclosed drawing no. bmd-iv/004a/item no. 2) , erosion protection shield (sleeve) for h.p. tube [ltsh] material- ss304 size l-1000, d-51.5, d-47.5, b-05 (as per enclosed drawing no. bmd-iv/004a/item no. 3) , erosion protection shield (sleeve) for extended sh tubes of boiler material- ss304 size l-1000, d-46, d-42 , b-02 (as per enclosed drawing no. bm/4/item no. 4) , erosion protection shield (sleeve) for h.p. tube [reheater] material- ss309s size l-1000, d-58, d-54, b-05 (as per enclosed drawing no. bmd-iv/004a/item no. 4) , s.s. quarter shield for water wall burner penal tubes material - ss309s(as per enclosed drawing no. bmd-iv/45) , clamp for protection sleeve of arch tube material-ss304 bin code-05501310309-01 , clamp for protection sleeve of economiser tube material-ss304 bin code-05512010040-01 , clamp for protection sleeve of ltsh tube material-ss304 bin code-05524100224-01 , stainless steel pipe for water wall soot blower size- 80 nb thickness- 2mm material - ss310 material code- 71306416194-02 , insulation retainer (circular plate) as per drawing item no. 04 material- mild steel , j hook f 6mm (length-200mm) as per drawing item no. 02 material- mild steel , insulation retainer (square plate) as per drawing item no. 03 material- mild steel , j hook f 6mm (length-400mm) as per drawing item no. 01 material- mild steel , fin size - 12 x 6mm for water wall tubes each length 2 to 3 mtr. fin material - carbon steel sa210 gr c