Pakistan Railways Lahore Tender Notice

Tender for Stopper Head Size: Bore 45mm, Total Length 159mm, Diameter 140mm. Specification: 1. Pyrometric Cone: 29 Min 2. Porosity: 10% Min and 21% Max 3. Re-heat Diameter: Maximum 1% Shrinkage Change at 1350°C Standard Spec No. FB17A Revised 1979 (Japanese) or (E2 U) origin ASTM C-435-63 Type C The Stopper Head is used to control the flow of molten steel metal from the ladle during casting. Nozzle Brick Size: Bore 45mm, Total Length 203mm, Major Diameter 153mm, Minor Diameter 118mm. Specification: ASTM C-435-63 Type C. 1. Pyrometric Cone equivalent to 29 Min. 2. Porosity: 10.0% Min and 21% Max 3. Re-heat Diameter Change: 246°F Shrinkage 1% In steel casting, the Nozzle Brick (45mm) is a type of refractory brick used at the ladle bottom to control and guide the flow of molten metal. Stopper Sleeve Size: Total Length 178mm, Total Width 127mm, Bore 82.5mm Specification: 1. Pyrometric Cone: 29 Min 2. Porosity: 10% Min and 21% Max 3. Re-heat Diameter Change at 1350°C: Maximum 1% Shrinkage 4. Silica: Maximum 56% 5. Alumina: Maximum 37% 6. Iron Oxide: Maximum 2.25% The Stopper Sleeve in steel casting is a critical refractory component used in the ladle to control the flow of molten metal through a nozzle. Well Block Size: Length 280mm, Width 280mm, Height 153mm, Bore 153mm and 127mm (Bore is tapered in size) Specification: 1. Pyrometric Cone: 29 Min 2. Porosity: 10% Min and 21% Max 3. Re-heat Diameter Change at 1350°C: Maximum 1% Shrinkage 4. Silica: Maximum 56% 5. Alumina: Maximum 37% 6. Iron Oxide: Maximum 2.25% The Well Block...