.1 intermideate shaft, main shaft; 2 Materials: carbon , stainless and alloy steel; 3 Proces: hot forging, machining; 1,name: Flexible forged shafts, ... heavy shafts,large shaft forging 2,materials: carbon,stainless,alloy ... 20-45TUltrasonic Inspection Testing Standard: ASTM A609,EN 12680-1,SEP 1922(IN 1690-T2)Magnetic Testing Standard: ...