... with16 Manganese,40 Chromium and 45#steel etc .4,Every parts of our products that pins ,axles, ... 3 ) Slewing bearing : appointed corporation of Fangyuan SlewingBearing Factory .( 4 ) Slewing mechanism : equipped with four-speed winding motor and ... and automaticsubmerged arc welding. Feature: advanced technology,strongconnectivity.( 8 ) Driver cab : With arc space capsule , toughened glass , widefield ...