| Material | Application Scenario | Product and Process Feature Introduction | Remarks |
| HTANi15C u6Cr2 | Oil Extraction | Single weight: 0.525kg, made of high-nickel austenitic cast iron, formed by separate splicing of wax molds, complex shell-making process, low-temperature casting, and machining of the outer surface | Tolerance accuracy of castings dimensional tolerance standard ISO8062 (GB/T6414) CT6 grade |