Poppet or I.C. engine valve or valve seat making

Full Title

Metal working > Method of mechanical manufacture > Prime mover or fluid pump making > Poppet or I.C. engine valve or valve seat making

Child Classifications

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• Y10T 29/493 Valve guide making
• Y10T 29/49302 Repairing, converting, servicing or salvaging
• Y10T 29/49304 Valve tappet making
• Y10T 29/49306 Valve seat making
• Y10T 29/49307 Composite or hollow valve stem or head making
• Y10T 29/49314 with assembly or composite article making