1>High quality material 2>Nitriding 3>Screw for rubber machine Technical IndexMaterial&ProcessesHardness After Hardending&TemperingHB240~280Quality 38CrMoALANitrided HardnessHV950~1000Nitrided Case Depth0.55~0.7mmQuality Powder Metallurgy Raw MaterialsNitrided BrittlenessLess Than Grade 1Surface RoughnessRa 0.4Screw Straightness0.015mmCold/Thermal Spray Hard Metal ProcessSurface Chromium-Plating’ ...
... , Best delivery date and Best service Advantages:1. Many years trading experiences2. country in origin3. Competitive price4. Accept small order5. Prompt ...
... the world famous “Hometown of Fireworks”--- Liuyang, China.Professionals in trading fireworks and relatively comprehending its home and world market are ...
... ; stable under light, heat and PH value is stable.Quality Index: Color value 10-250 (6600—165000cu) Absorbance ratio 0.980 ... ) ≤25mg/kg Lead ≤30mg/kg Arsenic ≤3mg/kgThe product quality index is in line with the relevant standards of GB10783-1996 ...
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