Wang Ning

Blowing-out flutter device for blast furnace

New charging method of schreyerite smelting blast furnace

Improved venturi tube throat dust-settling device

Half planting -peg device in bottom of blast furnace corrodes forced air cooled tube that sinks

Forced air cooled tube interplantation stick device that sink is corroded at bottom of blast furnace

Forced air cooled tube interplantation stick device of fracture is corroded at bottom of blast furnace

Blast furnace baker guide duct device

Demolish blast furnace stave's portal frame device

Blast furnace drying air guide pipe device

Prosthetic devices of blast furnace stave water pipe