Epoxy Immersive Coating.pdf
PDF 86 KB Posted
- Attached to
- J041--Replace Hydronic Cooling Coil
- Solicitation number
- 36C25626Q0507
About this file
This document is a technical specification for an epoxy immersive coating equivalent to Electro Fin coating for coils. The specification details a multi-stage corrosion-resistant coating application process that includes heated alkaline immersion cleaning, reverse-osmosis immersion rinsing, electrically deposited epoxy coating, permeate immersion rinsing, and high-temperature oven curing. Coating thickness must be maintained between 0.6-mil and 1.2-mil, with uniform thickness required at fin edges. Where coils are exposed to UV, a UV-resistant urethane mastic topcoat must be applied. Contractors must provide complete coating process traceability for each coil and offer a minimum five-year limited warranty.
Quality control compliance is mandatory for all applicable ASTM Standards, including salt spray resistance of minimum 6,000 hours, humidity resistance of minimum 1,000 hours, water immersion of minimum 260 hours, cross-hatch adhesion with a minimum 4B-5B rating, and impact resistance up to 160 inch-pounds. These performance requirements establish the baseline standards that all coated products must meet prior to delivery.
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| 36C25626Q0507_Sources Sought Notice.docx | DOCX document | |
| AHU-W HVAC Specifications.pdf |
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Epoxy immersive coating equivalent to Electro Fin coating
1. Epoxy Immersion Coating – Electrically Deposited: The multi-stage corrosion-resistant coating application comprises of cleaning
(heated alkaline immersion bath) and reverse-osmosis immersion rinse prior to the start of the coating process. The coating thickness shall be maintained between 0.6-mil and 1.2-mil. Before the coils are subjected to high-temperature oven cure, they are treated to permeate immersion rinse and spray. Where the coils are subject to
UV exposure, UV protection spray treatment comprising of UV-resistant urethane mastic topcoat shall be applied. Provide complete coating process traceability for each coil and minimum five years of limited warranty.
2. The coating process shall such that uniform coating thickness is maintained at the fin edges. The quality control shall be maintained by ensuring compliance to the applicable ASTM Standards for the following:
a. Salt Spray Resistance (Minimum 6,000 Hours)
b. Humidity Resistance (Minimum 1,000 Hours)
c. Water Immersion (Minimum 260 Hours)
d. Cross-Hatch Adhesion (Minimum 4B-5B Rating)
e. Impact Resistance (Up to 160 Inch/Pound)
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