G. Section 230713 – Duct Insulation 1. ADD the following to section 3.8 INDOOR DUCT AND PLENUM INSULATION SCHEDULE. a. F. F. Mill phosphatized or galvannealed "paint grip" steel is not acceptable. 3. ADD the following to section 3 3.1 AIR DUCTS - SUPPLY AND RETURN AIR DUCTS - SUPPLY AND RETURN GALVANIZED SHEET METAL WITH LOCK-FORMING QUALITY QUALITY ASTM A653, G90 COATING, MILL PHOSPHATIZED FINISH FOR DUCTS EXPOSED TO VIEW. CLASS DESIGNATION SHALL BE ADEQUATE FOR PRESSURE IN DUCT SYSTEM PER TOTAL PRESSURE AS SCHEDULED

Product Spec Sheet 3 x 22 Soffit Vent Model # UE2041

ASTM D9092- mill phosphatized coating for painting. IF BONDERIZED ASTM b370- Sheet Copper, 16oz and 20oz IF GALVANIZED .025 x.025 hot dipped galvanized 23ga wire mesh Installation: Install like any other similar Ventilator Product on the market.

1. Mill-Phosphatized Finish: Manufacturer's standard for field painting. B. Aluminum-Zinc Alloy-Coated Steel Sheet: ASTM A 792/A 792M, AZ50 coated. C. Aluminum Sheet: ASTM B 209, manufacturer's standard alloy for finish required, with temper to suit

This phosphatized (also known as "bonderized" or "phos-bond") has all the corrosion resistant benefits of galvanized but it can be painted. However, this product is only produced by a few domestic mills and thus becoming less and less specified in our industry.

mill phosphatized duct allincooking designation; mill-phosphatized finish for surfaces of ducts exposed to view. B. PVC-Coated Galvanized Steel: UL 181, Class 1 listing. Lock-forming-quality, galvanized, sheet steel with ASTM A 653/A 653M, G90 coating designation; factory-applied, 4-mil PVC coating on exposed surfaces of ducts and fittings (exterior of ducts

ASTM D9092- mill phosphatized coating for painting. IF BONDERIZED ASTM b370- Sheet Copper, 16oz and 20oz IF GALVANIZED .025 x.025 hot dipped galvanized 23ga wire mesh Installation: Install like any other similar Ventilator Product on the market.

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3.1 AIR DUCTS - SUPPLY AND RETURN AIR DUCTS - SUPPLY AND RETURN GALVANIZED SHEET METAL WITH LOCK-FORMING QUALITY QUALITY ASTM A653, G90 COATING, MILL PHOSPHATIZED FINISH FOR DUCTS EXPOSED TO VIEW. CLASS DESIGNATION SHALL BE ADEQUATE FOR PRESSURE IN DUCT SYSTEM PER TOTAL PRESSURE AS SCHEDULED

2. Exposed-Surface Finish: Mill phosphatized. D. Stainless-Steel Sheets: Comply with ASTMA 480/A 480M, Type 304, and having a NO 2 finish for concealed ducts and NO 4 finish for exposed ducts. E. Aluminum Sheets: Comply with ASTM B 209, Alloy

3.1 AIR DUCTS - SUPPLY AND RETURN AIR DUCTS - SUPPLY AND RETURN GALVANIZED SHEET METAL WITH LOCK-FORMING QUALITY QUALITY ASTM A653, G90 COATING, MILL PHOSPHATIZED FINISH FOR DUCTS EXPOSED TO VIEW. CLASS DESIGNATION SHALL BE ADEQUATE FOR PRESSURE IN DUCT SYSTEM PER TOTAL PRESSURE AS SCHEDULED

Paintgrip material is phosphatized – sometimes referred to as "bonderized" ‐ at the mill which allows the user to paint in the as‐received condition. This phosphate coating provides enhanced paint adhesion and improved corrosion resistance to thed painte steel

653M and having Z275 coating designation; ducts shall have mill-phosphatized finish for surfaces exposed to view with 0.8 mm thick. Duct insulation: Use Knauf Fiberglass materials. Mineral-Fiber Blanket Thermal Insulation or equal approved

SECTION 233113 – HVAC DUCT SYSTEMS AND ACCESSORIES First Edition 5-16-2017 (Engineer shall edit specifications and blue text in header to meet project requirements. This includes but is not limited to updating Equipment and/or Material Model Numbers

653M and having Z275 coating designation; ducts shall have mill-phosphatized finish for surfaces exposed to view with 0.8 mm thick. 2- Duct insulation: Use Knauf Fiberglass materials. Mineral-Fiber Blanket Thermal Insulation or equal approved (apply to

Production and properties Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers

Product Spec Sheet 3 x 22 Soffit Vent Model # UE2041

ASTM D9092- mill phosphatized coating for painting. IF BONDERIZED ASTM b370- Sheet Copper, 16oz and 20oz IF GALVANIZED .025 x.025 hot dipped galvanized 23ga wire mesh Installation: Install like any other similar Ventilator Product on the market.

653M and having Z275 coating designation; ducts shall have mill-phosphatized finish for surfaces exposed to view with 0.8 mm thick. Duct insulation: Use Knauf Fiberglass materials. Mineral-Fiber Blanket Thermal Insulation or equal approved

Production and properties Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers

1. Mill-Phosphatized Finish: Manufacturer's standard for field painting. B. Aluminum-Zinc Alloy-Coated Steel Sheet: ASTM A 792/A 792M, AZ50 coated. C. Aluminum Sheet: ASTM B 209, manufacturer's standard alloy for finish required, with temper to suit

ASTM D9092- mill phosphatized coating for painting. IF BONDERIZED ASTM b370- Sheet Copper, 16oz and 20oz IF GALVANIZED .025 x.025 hot dipped galvanized 23ga wire mesh Installation: Install like any other similar Ventilator Product on the market.

Galvanized sheet steel with a mill‐phosphatized finish is used for ducts exposed to view and aluminum sheet is used for concealed ducts. It meets section 5.5 as an exception for resistance to mold growth and erosion. Other duct accessories are made to