Optional designs with greater wind speeds, live loads, and snow loads are available.
MATERIAL: All materials shall be structurally sound and appropriate for safe use. Product durability shall be ensured by the use of corrosion-resistant metals such as stainless steel, and coatings such as zinc-plating, galvanizing, and powder-coating on steel parts, subject to the Project-Specific requirements below. Fabrics used shall include UV-stabilizers and fire retardants for longevity and safety.
WELDMENTS: All tubing members are factory-welded by Certified Welders to American Welding Society (AWS) specifications and to the highest standards of quality workmanship. Weldments are finished with a zinc-rich galvanized coating. No field welding is required in the assembly of Shade Systems products.
POSTS, STRUCTURAL FRAME TUBING, AND HARDWARE: All tubing used shall be cold-formed and milled per ASTM A-135 and ASTM A-500. Material testing is in accordance with ASTM E-8. Minimum yield is 40,000 psi with a minimum tensile strength of 45,000 psi on all posts. All tubing shall be pre-cut to appropriate lengths, and where applicable all outside surfaces shall be galvanized, with an interior corrosion-resistant zinc-rich coating. Where required, support pipes shall be schedule 40 hot-dip galvanized or powder-coated black steel. All fastening hardware shall be stainless steel.
ARCHITECTURAL POLYESTER POWDER-COATING PROCESS: All powder-coated parts undergo a rigorous multi-step process to ensure colorfastness and durability per the specific sequential steps itemized below. All parts are completely sandblasted, pre-treated, and coated with coastal primer prior to powder coating. Powder-coating is then electrostatically applied and oven-cured at 375 to 425 degrees Fahrenheit. Powders shall meet or exceed ASTM standards for Adhesion, Hardness, Impact, Flexibility, Overbake Resistance, and Salt Spray Resistance. Colors shall be specified.
The following seven (7) specific steps shall occur in sequence:
1. Sandblasting. All powder-coated parts shall be completely sandblasted with the use of 80 grit garnet abrasives.
2. Mechanical smoothing. A traditional mechanical method shall be used for removing remaining foreign matter for surface preparation by use of sanding, grinding, and rounding rough edges to smoothness.
3. Initial Surface Preparation. A heavy-duty liquid cleaner such as Calvary Industries Inc Cal Clean 675 shall be applied for initial surface preparation.
4. Corrosion resistant Coating. A liquid detergent iron phosphate, such as Calvary Industries Inc, Cal Prep 63, shall be applied, thereby resulting in a superior quality corrosion resistant coating.
5. Final Surface Preparation. All parts shall then be sealed using a reactive, non-chrome sealer product such as Calvary Industries, Advantech S1488E Sealer. The sealer enhances corrosion protection and increases paint adhesion, effectively increasing salt spray hours on all metal substrates.
6. Coastal Primer. Prior to powder-coating, a rust inhibiting coastal primer shall be applied on all parts, such as PPG Envirocron™ The coastal primer coating provides a combination of excellent physical and chemical resistance properties, and is the ideal solution for smooth, low-bake durability and physical property requirements for the most demanding environments.
Primer attributes: