General Characteristics of Piping Paint Materials

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Paint manufacturers shall furnish the characteristics of all paints materials on printed literature, along with the test certificate for all specified characteristics given in this specification. All the paint materials shall be on first quality and conform to the following general characteristics as mentioned below.

Inorganic Zinc Silicate Coating :

A two pack air drying self curing solvent based Inorganic Zinc silicate coating for use on steel surfaces.

  1. Volume Solids (Approx.) : 60%vol by solids
  2. Dry film thickness per coat : 65-75 microns
  3. Theoretical Coverage : 8-9 sq.m/ coat/litre
  4. Weight per Litre : 2.2 Kg/litre
  5. Touch dry at 30° C : 30minutes
  6. Hard Dry at 30° C : 12Hrs.
  7. Over coating Intervals : Min: 8 Hrs at 20 C & 50% RH
  8. Pot life at 30° C : 4-6 Hrs

Etch Primer :

A two pack Polyvinyl butyral Resin medium cured with Phosphoric acid solution pigmented with Zinc Tetroxy Chromate.

  1. Volume Solids (Approx.) : 7-8%
  2. Dry film thickness per coat : 8-10micron
  3. Theoretical Coverage : 8-10
  4. Weight per Litre : 1.2
  5. Touch dry at 30° C : 2Hrs
  6. Hard Dry at 30° C : 24Hrs
  7. Over coating Intervals : Min: 4-6Hrs
  8. Pot life at 30° C : not applicable

Zinc Phosphate Epoxy Primer :

A Two component Polyamide cured epoxy resin medium, pigmented with zinc phosphate.

  1. Volume Solids (Approx.) : 40%
  2. Dry film thickness per coat : 40-50micron
  3. Theoretical Coverage : 8-10sq.m/coat/litre
  4. Weight per Litre : 1.4 Kg/litre
  5. Touch dry at 30° C : 30 minutes
  6. Hard Dry at 30° C : 24 Hrs
  7. Over coating Intervals : Min: 8 Hrs
  8. Pot life at 30° : 8 Hrs

Polyamide Cured High Build Epoxy Micaceous Iron Oxide Coat :

It is a two component High Build Epoxy Coating ideally suited for exterior application & pigmented with micaceous iron oxide (MIO), a lamellar plate-like pigment that forms a thick lustrous layers after application.

  1. Volume Solids (Approx.) : 53% volume by solid
  2. Dry film thickness per coat : 100-125 micron
  3. Theoretical Coverage : 5.3-4.24 sq.m/coat/litre
  4. Weight per Litre :
  5. Touch dry at 30° C : 2-2.5 Hrs
  6. Hard Dry at 30° C : 5-6 days
  7. Over coating Intervals :
  8. Pot life at 30° C : 6-8 Hrs

Acrylic Polyurethane Finish Paint :

It is two pack Aliphatic Isocytane cured acrylic finish paint. Part-A consist of Polyacrylate Polyol with appropriate primer extenders, solvent and additives & part-B consist of Aliphatic Polyisocyanate with appropriate solvents and additives. Part-A and Part-B are to be mixed together to form a pigmented polyurethane paint in suitable
proportion as recommended by manufacturer.

  1. Volume Solids (Approx.) : 40-45%
  2. Dry film thickness per coat : 30-40 micron
  3. Theoretical Coverage : 10-13sq.m/coat/litre
  4. Weight per Litre : 1.3kg/litre
  5. Touch dry at 30° C : 1 Hr.
  6. Hard Dry at 30° C : Overnight
  7. Over coating Intervals : Min: Overnight (12 Hrs)
  8. Pot life at 30° : 6-8 Hrs.