EVERSTORE® GLASS FUSED-TO-STEEL COATING SYSTEM & FACTORY TESTING
UIG-Everstore Vitrium GLASS COATING System – APPLICATION AND FIRING:
a.UIG-Everstore® Glass fused-to-steel coating system conforms solely to Section 12.4 of the latest ANSI/AWWA D103std.
b. UIG-Everstore® Glass fused-to-steel coating system is in full compliance with NSF61 and NSF372 standards and it’s currently listed on NSF website ( www.nsf.org).
c. Glass coatings to be applied by Wet Spraying and must be fused-to-steel by firing in high temperature oven at 1450°F – 1600°F in strict accordance with the ISO 9001 quality control procedures, including firing time, furnace humidity, and temperature control requirements.
d. The tank manufacturers coating process shall employ equipment that evenly coats the sheet surfaces and all (4) exposed sheet edges.
e. Manufacturer shall maintain and use supplementary directional spray nozzles using an automated machine process to consistently coat the sheet edge profiles per PEI 101 standard.
i. The sheet edges shall be coated with the same vitreous enamel glass coating system as the sheet surface.
ii. A base coat of glass frit containing nickel oxide shall be applied to all 6 sides of the sheet.
iii. A second coat of milled cobalt blue glass shall be applied to both sides of the sheets.
iv. A third coat of titanium dioxide reinforced glass mixture shall be applied to all interior sidewall and floor, roof sheet surfaces (for NSF61 certified tanks the interior coating color shall be White).
Surface Preparation and Cleaning:
a. After plate fabrication and prior to application of the glass coating system, all sheets/plates shall be steel grit-blasted to SSPC SP-10/NACE2 (Near White Metal) on both sides.
b. The surface anchor pattern shall be not less than 1.0 mil (0.001 inches).
c. All sheets shall be air blasted to remove any latent grit and then coated immediately with a rust preventative material.
Sheet Edge Preparation:
Prior to glass slurry application all four (4) exposed rectangular continuous sheet edges for each specific sheet radii shall be mechanically rounded in profile resulting in an optimized radius and adhere to The Porcelain Enameling Institute’s Technical Manual PEI-101. All edges shall receive glass coating system approx. 5mils DFT.
Glass-Fused-to-Steel Coating System options:
System No 1: 3-Coats & 2-Burns Process: 7-19 MILS DFT (FOR TANKS WITH TWO DIFFERENT COLORS ON THE INTERIOR & EXTERIOR SURFACES)
System No 2: 3-Coats & 1-Burn Process: 7-19 MILS DFT (FOR TANKS WITH THE SAME COLOR ON THE INTERIOR & EXTERIOR SURFACES)
Glass Coating Characteristics:
Acid and alkali resistant pH: 2-13Hardness: 6.0 (Mohs)Adhesion: 3,450 N/cm
Available Tank Colors:
Titanium Dioxide WhiteForest GreenDesert TANCobalt BlueIndigo BlueOlive GreenAny color based on your RAL #