... pouring through the Submerged entry nozzle(SEN), guarantees required billet/bloom/slab with enough thick shell to be ... rich experience in taper designing, our tapers are: Single taper, double taper, triple taper, multiple taper, ... (Unit: mm)Square &RectangularMouldSquare60x60~500x5004000-170006~50700-1000Design with single taper, doubleTapers, triple tapers, quadruple tapers, parabolic taper ...