... for 10 year's experience 2.ISO9001, ISO14001, GB/T28001certifications 3.Factory supply directly Slewing bearing for concrete machinery:Slewing bearing for 72m pump ... pieces / the annular pieces / modules / three-way valve body / and other special-shaped forgings.3 Annealed hardness ... obvious temper brittleness. 5 Applications It Is widely used for the locomotive traction gear, gear, rear axle, ...