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Rhodium Plating
Gold Plating
Electroless Gold Plating
Silver Plating
Bright Nickel Plating
Electroless Nickel       Plating
Tin Plating
Lead Plating
Cadmium Plating
Zinc Plating
Chromate
Conversion Coating
T.C.P. Process
(Surtec-650)
Anodizing
S.S.Passivation
Blackening
Phosphating Manganese
Phosphating Zinc

An ISO 9001-2008 Company

   ISO 14001-2004

TUV CERTIFICATE

Passivation (QQ-P-35C):

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Specification covers standard recommendation practice for cleaning and de-scaling stainless steel parts, equipment and systems. Cleaning includes all operations necessary for the removal of surface contaminants from metals to ensure:

(1) maximum corrosion resistance for the metal.
(2) prevention of product contamination; and
(3) achievement of desired appearance. (has no dimensional change)

Passivation
passivation 

Type I:     Low temperature
Type II:   Medium temperature
Type III:   High temperature
Type IV:   For steels containing large amounts (0.15%)
of sulfur or selenium.
Type V:    Anodic-for high carbon martensitic (440 steels).
Type VI:   Low temperature (optional).

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