... have rich experience to manufacture the forged shafts. 1,Material standard: 34CrNiMo6,18CrNiMo7-6,4140,4340,4330 ... Rough machining4,3.1 certificate5,Third party inspection is accepted. wind equipment forged Turbine step shaft Verified Information ... Previous Year) Total Revenue (%) North America USD 1,026,726 0.97 South America USD 4,422 ... ,822 4.19 Oceania USD 1,453,213 1.38 Eastern Asia USD 2,243, ...