... 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 steel 3,proces: hot forging 4,certificates: ISO9001-2000,GL, ... IN 1690-T2)Magnetic Testing Standard: ASTM A125,ISO 4986 main shaft forging