Supply, Erection And Commissioning F Long Retractable Soot Blower, Box Type Rack And Pinion Type, Long Retractable Motorized Soot Blower Comprising Of Valve Operating Mechanism, Lance With Nozzles And Feed Pipe, Gear Box, Electric Motor, Intermediate Gear Box, Structural Body With Rails, Rack And Pinion, Sealed Wall Box, Matching Flange, Mounting Box