In the oil and gas machinery field, steel castings are crucial for various components due to their strength and durability. Here are some common part names that are typically made from steel castings:

1. Valves:

   • Gate Valve
   • Ball Valve
   • Globe Valve
   • Check Valve

2. Pumps:

   • Casing
   • Impeller
   • Volute

3. Flanges:

   • Blind Flange
   • Weld Neck Flange
   • Slip-On Flange

4. Couplings:

   • Gear Coupling
   • Rigid Coupling

5. Adapters:

   • Pipe Adapter
   • Hose Adapter

6. Supports and Brackets:

   • Pipe Support Bracket
   • Equipment Mounting Bracket

7. Clamps:

   • Pipe Clamp
   • Hose Clamp

8. Housings:

   • Gear Housing
   • Motor Housing

9. Saddles and Bases:

   • Valve Base
   • Pump Saddle

10. Retainers and Sleeves:

    • Retaining Ring
    • Sleeve Bearing

11. Miscellaneous Components:

    • Manifolds
    • Connectors
    • Crossovers

These components must be designed to withstand high pressures, corrosive environments, and extreme temperatures typical in the oil and gas industry. Each part has specific material and performance requirements that influence the casting process and design.