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 General Information
Most Wesanco channels are produced in 10 and 20-foot lengths with a length tolerance of plus or minus 1⁄16. Wesanco W700 and W6500 are produced in 10 foot lengths only.
Wesanco channels are manufactured by the cold roll forming process which produces cross sections of uniform dimensions within tolerances established by the Metal framing Manufacturer's Association, Metal Framing Standards Publication No. MFMA-1.
Steel used in the manufacture of Wesanco channels conforms to the ASTM specifications in this catalog.
Design is based on AISI "Specification for the Design of Cold-Formed Steel Structural Members." Maximum bending stress used in design is 25,000 pounds per square inch (PSI). This is based upon a virgin steel minimum yield stress of 33,000 PSI cold worked to an average yield stress of 42,000 PSI.
Welds meet the performance requirements of section 4 of AISI "Specification for the design of Cold-Formed Steel Structural Members." All multiple sections of two or more single Wesanco channels are resistance spot-welded approximately 2" to 3" on center.
Electroplated Zinc or Electro-Galvanized (EG)
This coating is standard for most ZSi-Foster products. Electro- Galvanized products meet ASTM B633 SC1 or SC3, Type III. Electroplating deposits zinc on the surface of the steel by electrolysis from a bath of zinc salts. The thickness of zinc applied in this method is between 0.2 mils to 0.5 mils [5.1 μm to 12.7 μm].
Mill-Galvanized (Pre-Galvanized) (PG)
ASTM A653 G-90 Pre-galvanized zinc is produced by continuously rolling steel coils or sheets through molten zinc at the mills. The coils are slit to size and fabricated by forming, shearing or punching to produce the finished product. During fabrication cut edges are not generally zinc coated; however, the zinc near the uncoated metal becomes a sacrificial anode to protect the bare areas.
Paint-Green Powder Coating (GR)
A dark green low gloss powder coating is applied and thoroughly baked after steel has been cleaned and phosphatized.
Hot Dip Galvanized After Fabrication (HG)
Wesanco channel and fittings which are hot dip galvanized after fabrication conform to one of the following specifications.
ASTM A 123, ASTM A153 or ASTM A386.
Silva-Guard (SG)
ZSi-Foster Silva-Guard coating is a multi-step process that meets the 1000 hour salt spray test per ASTM B117 and DIN 50021.Silva- Guard coating is WEEE, ELV and RoHS compliant. SG Finish is approved for outdoor as well as indoor applications. It is a chrome free duplex coating system that combines an inorganic zinc-rich basecoat with an aluminum-rich organic topcoat.
Special Coatings
Other commercially available finishes can be supplied per specification when required to protect applications.
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Wesanco® Material & Finish speciFications
  Channel Specifications
 Current ASTM Designation
 Previous ASTM Designation
  ASTM Description
  Hot Rolled: Channel
 A 1011SS GR33
 A 570 GR33
  Hot rolled carbon steel sheet and strip, structural quality.
  Cold Rolled: Channel
  A 1008SS GR33
  A 611
   Cold rolled carbon sheet steel.
  Pregalvanized: Channel
  A 653 SS GR33
  A 653 GR33 G90
 Steel sheet zinc-coated by hot dip process at mill, structural quality.
  Stainless Steel: Channel
  A 240 TYPE 304
 A 240 TYPE 304
 Heat resisting chromium and chromium-nickel stainless steel plate, sheet, strip for pressure vessel.
  A 240 TYPE 316
  A 240 TYPE 316
   Aluminum: Channel
  B 221 TYPE 6063 T6
   B 221 TYPE 6063 TS
   Aluminum alloy extruded bar, rod, wire, shape and tube.
  Refer to Engineering Catalog for Beam & Column Loading Data of Solid, Back-to-Back, and Punched Channels

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