Construction Pinion roller for Passenger Hoist Mech The products are manufactured according to the followlng technical parameters and raw material control:1,The steel material selected 100 % comes from our natlonal large-scalesteel corporations .2.The critical materials that steel,welding material e......

| The products are manufactured according to the followlng technical parameters and raw material control: |
| 1,The steel material selected 100 % comes from our natlonal large-scalesteel corporations . |
| 2.The critical materials that steel,welding material etc are all examined by chemical detection , then they are allowed into workshop for batch production. |
| 3.Strictly conforms to drawing requirements, we make the products with16 Manganese,40 Chromium and 45#steel etc . |
| 4,Every parts of our products that pins ,axles,sleeves etc are strictly obey quenching and temperin procedures |
| 5,Every parts of our products strictly conforms to the procedure requirements : mill ,plane, polish, press ,test etc in turn. |







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