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      Location:Home - Competition - Testing Center
      Testing Center
      Testing Center

      Quality assurance is based on the perfect quality management system.
      Zhanmei has gathered a number of professional elites who are engaged in product quality inspection and research and development. Our commitment is based on the product quality, with the business philosophy of "excellence and superior quality", to continuously improve the product quality and service, and lead Zhanmei to continuously grow and develop.
      Zhanmei has the physical and chemical testing equipment valued more than 2 million Yuan, three Germany-imported spectral analyzers, sclerometer, tensile tester and chemical laboratories, as well as professional and experienced quality engineering and technical personnel, and rigorous work and professionalism, which provide the reliable quality assurance for the products of Zhanmei.

      • Spectrometer (imported from Germany), capable of accurately analyzing chemical composition of products
      • tensile testing machine
      • Spectrum analyzer
      • chemical analysis
      • Hardness tester
      Shape Basic size Diameter tolerance Tolerance of roundness (not greater than) Bending degree (no greater than) (mm) Length deviation(mm)
      polishing Drawing Extrusion polishing Drawing Extrusion
      Round bar ≥2-8 0-0.018 0-0.035 0.0025 0.005 1 ±10
      >8-15 0-0.025 0-0.04 0-0.15 0.003 0.007 1 ±10
      >15-25 0-0.07 0-0.18 0.010 1.5 ±10
      >25-36 0-0.12 0-0.21 0.015 1.5 ±10
      hexagonal and special-shaped bars ≥4-8 0-0.03 0-0.15 0.005 1.5 ±10
      >8-13 0-0.04 0-0.18 0.007 1.5 ±10
      >13-21 0-0.07 0-0.18 0.010 3 ±10
      >21-26 0-0.12 0-0.21 0.015



      Note: The enterprise standard of Zhanmei is in line with GB4425-84 standard, and its polishing and drawing accuracy can fully meet the processing needs of high-end imported CNC machines and automatic lathes, to develop the delivery tolerances and grade accuracy according to the actual needs of customers.

      variety Specifications Japan Main characteristics and Applications
      name grade state grade Code
      free cutting lead brass Hpb59-2 drawing
      C3604 C3604BDS The superior cutting performance is available for bolts, nuts, small screws, shafts, gears, valves and components for watches, carburetors, IT industry and precision instruments. The GD high-precision hexagonal brass rod can be used for the imported high-precision CNC machine tools to process and produce the high-precision components.
      cold riveting lead brass Hpb63-3 drawing
      C3560 C3560BDS The superior cutting performance with excellent extension is available for the components that are subject to both cutting processing and cold riveting processing, and is mainly used for electrical switching components and enrichment valve piston of carburetor.
      forged lead brass Hpb59-1 drawing
      3771 C3771BD
      The excellent hot forging performance and processing performance are available for air-conditioning valve, valve core, automotive valve and other complex high-precision parts, as well as high-grade plumbing equipment, case, strap, luxury hardware jewelry, locks, handles and so on.


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