... used for blowing in steelmaking, it is made of steel pipe with inside & outside surface calorized & ceramic coated,due to the ... , thermal resistant, anti-erosion, easy operation, its main use : Blowing oxygen or other gas into EAF;Injection of powder additive to ... which requires high refractoriness, anti-oxidation,anti-sulphurization, anti-erosion; Oxygen Lance Pipe