Metal Surface treatment







Anodizing

Alkaline Cleaning / Degreasing

VALOCLEAN 81 – Non-etching, cleaning and degreasing of Aluminium parts before further treatment of work parts.

Caustic Etching

VALOETCH 21- Additive to a Caustic solution preparing a long life etching solution with which a matt or satin finish on aluminium prior to anodizing is produced.

Desmutting / Deoxidizing

VALOSMUT 60 - After the alkaline etching of aluminium and its alloys Valodesmut is is used together with spent anodizing electrolyte. This solution removes the smut on the aluminium surface prior to the anodizing 

Anodizing additive

VALOADD 2 – Anodizing additive for improving the electrolyte conductivity in the anodizing bath.

Electrolytic Colouring

VALOCOLOR L9 – Tin based electrolytic colouring of anodized aluminum
VALOCOLOR S9 - Stabilizer for electrolytic coloring baths.

Sealing

Hot Sealing

VALOSEAL QM - slightly acidic liquid product for the prevention of sealing smut during the hot water sealing of anodized aluminium at a temperature above 95 dgr C.

Cold Sealing

VALOSEAL COLD A/B – Nickel based Cold impregnation of anodized aluminium

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Cleaners/Degreasers

Metal cleaning/degreasing though a preliminary stage in pre-treatment but it is one of the essential process aimed at removing grease, oil and dirt from the base metal. At Covalent we provide complete range of pre-conversion coating cleaning solutions for Aluminium and steel which are cost effective, energy efficient and safe for operators.

Cleaners/Degreasers product line includes:

  • Acid and Alkaline cleaners for spray line
  • Acid and Alkaline cleaners for immersion line
  • Low temperature alkaline cleaners
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Conversion Coating

Conversion coating is introduced to enhance corrosion resistance, improve adhesion of paint & primer coating and also to provide brilliant finishing on metal surface.

We offer wide range of products for :

Phosphating

  • Iron phosphate
  • Zinc Phosphate
  • Nano Ceramic Phosphate

Aluminium

  • Chromating –yellow and green
  • Chrome Free

Coil Coating

  • Degreasing & Chromating
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Lubricating Oils &Metal forming Fluids

At Covalent we offer wide range of products to meet all your lubricating oils and Metal forming fluid needs. Our cold and warm forming and drawing line includes vegetable based , water based, solvent based, gel based and chlorine free fluids.

Products we offer

  • Neat Drawing Oil
  • Bio –Degradable Neat Drawing Oil
  • Water - Miscible Stamping Fluid
  • Water – Miscible hot drawing Fluid
  • Neat Mineral Metal Working Lubricants
  • Synthetic and Bio – degradable cutting lubricants
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Ancillary Product

At Covalent, we understand the need to offer our customers a complete solution.

Range of ancillary products:

  • Activators
  • Descaling / Desmutting Agents
  • Inhibitors
  • Picklers
  • Paint Stripers
  • Stabilizers
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