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2. Finishes for Surfaces Exposed to View: Mill phosphatized. C. Aluminum Sheets: Comply with ASTM B 209 (ASTM B 209M) Alloy 3003, H14 temper; with mill finish for concealed ducts, and standard, one-side bright finish for duct surfaces exposed to view. D. Factory- or Shop-Applied Antimicrobial Coating: 1.
Exposed-Surface Finish: Mill phosphatized. Structural Steel Shapes and Plates: Comply with ASTM A36/A36M. Provide zinc rich weldable primer finish unless otherwise scheduled. Acoustical Air Plenums. Duct silencers, with testing-verified performance, can attenuate sound better than many duct design features where performance is only approximated.
† The use of a "paint grip" or "mill phosphatized" surface is not necessary in order to facilitate surface painting. † Gustafson recommends the use of "DTM" (Direct to Metal) paint products. These paints are available through all major paint manufacturers and are specifically designed to .
have mill-phosphatized finish for surfaces exposed to view. C. Reinforcement Shapes and Plates Galvanized-steel reinforcement where installed on galvanized sheet metal ducts. D. Tie Rods Galvanized steel 1/4-inch minimum diameter for lengths 36 inches or less 3/8-inch minimum diameter for lengths longer than 36 inches.
1. Exposed-Surface Finish: Mill phosphatized. C. Stainless-Steel Sheets: Comply with ASTMA 480/A 480M, Type 304 except for Lab exhaust, which shall be Type 316. D. Aluminum Sheets: Comply with B 209, Alloy 3003, TemperASTM H14; with mill finish for concealed ducts and standard, 1-side bright finish for exposed ducts.
"Paint Grip" steel is mill phosphatized or galvannealed. o Galvanneal steel is, as its name implies, annealed. This annealing softens the steel, making it more prone to dings and dents. o Mill phosphatized steel has a zinc phosphate coating. Zinc phosphate is considered dangerous to aquatic life and special handling is required at the mill
ANSI/ASTM A 525, G90 zinc coating; mill phosphatized for exposed locations. B. Contact Molded Fiberglass Reinforced Plastic: The National Bureau of Standards "Voluntary Product Standard, PS-15-69" shall form the minimum basis for the fabrication of these FRP exhaust duct .
Finishes for Surfaces Exposed to View: Mill phosphatized. More details » Get Price. Read SECTION 15815 - METAL DUCTS. Readbag users suggest that SECTION 15815 - METAL DUCTS is worth reading. ... EXPOSED DUCT, WI MILL PHOSPHATIZED FINISH. More details » Get Price. SECTION 07600 - FLASHING AND SHEET ... - City of San Diego. mill phosphatized ...
Project specification requirements for paintgrip or mill-phosphatized finishes added to the galvanized coating for exposed ductwork have the ultimate intentions of providing a paintable surface. In theory the "acid" etching of the surface is to provide additional "bite" to the paint and enhances the adhesion of the paint to the underlying surface. Today's high quality latex DTM ...
SSPC-SP7/NACE 4: Brush-off blast cleaning to eliminate contaminants visible without magnification; mill scale, coatings, and rust may remain if they cannot be removed with a dull putty knife SSPC-SP10/NACE 2: Near-white blast cleaning to eliminate unmagnified visible contaminants of .
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 comply with standard test methods.
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Aug 01, 2012· 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
2. Finishes for Surfaces Exposed to View: Mill phosphatized. C. Stainless-Steel Sheets: Comply with ASTM A480/A480M, Type 304 or 316, as indicated in the "Duct Schedule" Article; cold rolled, annealed, sheet. Exposed surface finish shall be No. 2B, No. 2D, No. 3, or No. 4 as indicated in the "Duct Schedule" Article.
Accellent – Cardiology; Phase II METAL DUCTS 1415.31 – CD Pricing/Permit; April 24, 2008 15891 - 2 A. Protection. Protect shop-fabricated and factory-fabricated ductwork, accessories and purchased products from damage during shipping, storage and handling. Prevent end damage and prevent dirt and moisture from entering ducts and fittings.
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
B. Penetrations: Where ducts pass through interior partitions and exterior walls, and are exposed to view, conceal space between construction opening and duct or duct insulation with sheet metal flanges of same gage as duct. Overlap opening on 4 sides by at least 1-1/2". Fasten to duct and substrate. Provide fire or fire-smoke dampers as
Galvanized Sheet Steel Lock-forming quality ASTM A653 G90 coating designation mill-phosphatized finish for surfaces of ducts exposed to view Carbon-Steel Sheets ASTM A366 cold-rolled sheets commercial quality with oiled exposed matte finish Stainless Steel ASTM A480 Type 316 sheet form with No 4 finish for surfaces of ducts exposed to view and Type 304 sheet form with No 1 1-1/4 ounces per ...
designation; mill-phosphatized finish for surfaces of ducts exposed to view. B. Reinforcement Shapes and Plates: Galvanized steel reinforcement where installed on galvanized, sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.
coating designation; ducts shall have mill-phosphatized finish for surfaces of ducts exposed to view. C. Stainless Steel: ASTM A 480/A 480M, Type 316, sheet form with No. 4 finish for surfaces of ducts exposed to view; and type 304, sheet form No. 1 finish for concealed ducts.
Low & Medium Pressure Acoustically Lined Spiral Duct & Fittings – CLM-0789 Exposed Spiral Pipe – Paint Lock, Paint Grip, Mill-Phosphatized Exposed Low Pressure Fittings, Paintlock Round
Mill phosphatized steel has a zinc phosphate coating. Zinc phosphate is considered dangerous to aquatic life and special handling is required at the mill to prevent its release into the environment. Both annealing and phosphatizing processes promote paint adhesion by damaging the original hot dip galvanized coating.
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.
A. Galvanized Steel Ducts: Lock-forming quality; ASTM A 653/A 653M, G90 (Z275) coating designation; mill-phosphatized finish for surfaces of ducts exposed to view. B. Comply with SMACNA's "HVAC Duct Construction Standards--Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods, unless
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