Self-Purchase& Supply (SPS) system: WGB itself supplies any of WGB related production by WGB-purchased only raw materials. Guaranteed Souring: No.5 Steel Plant of Shanghai Steel Company Group; XingCheng Steel; Double-inspection before acceptance: Purchased materials need fully inspecting again by WGB before acceptance, even though quality certificate offered by sellers.
In-Process Quality Control
Hardness test and metallographic analysis by WGB Lab; Inspection items in process: roundness, roughness, appearance, dimension, ect; Unqualified workpiece with special quality tag must be re-processed or directly rejected; A and FULL inspection on each finished workpiece before assembly.
Radom inspection on stocked products every single day; Final inspection upon to-be-dispatched products.
Each of WGB suppliers is strictly selected by WGB Quality Standards and APPRAISED on a regular time basis. Any supplier with lower performance in consecutive 2 years will be cancelled. Outsourced work pieces are inspected on site by WGB quality workforce on a regular basis. Another full inspection is conducted by WGB people upon their arrival at WGB site.