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Galvanized Zee Purlins

Galvanized Zee Purlins

In steel construction, the ter mpurlin typically refers to roof framing members that span parallel to the building eave and support the roof decking or sheeting. The steel purlins are in turn supported by rafter or walls. Metal Z Purlins are light in weight and inexpensive.

Metal Zee Purlins are available in a wide variety of sizes and lengths. Z-Purlins are made to order. We do not inventory this item. Custom sizes and lengths available with a two week lead time. Route trucks servicing the entire United States.

metal purlins availability chart
Purlin Roofing Systems
Designed to reduce the distance the rafters have to span, metal purlins support the loads from the roof deck and help to prevent the roof from sagging. Metal for Roofing offers two types of galvanized purlins:
    • C Purlin - Cee or C purlins are shaped like a squared-off letter C. They are often used for structural support in walls and as floor joists in addition to roofs.
    • Z Purlin - The zee or Z purlin is shaped like a letter Z. Its shape allows the purlin to overlap with others at the joints. This gives zed purlins the potential to be much stronger than C purlins. Zee purlins are mainly used in walls or for large roofing projects.
Advantages of Z Purlins
    • Ability to span length
    • Purlin construction is easier to assemble and handle
    • Assured dimensions and straightness
    • High durability, versatility and uniform quality

Product Identification

All SSMA products have a four part identification code which identifies the size (both depth and flange width), styles and material thickness of each number.
Example:
Member Depth: Flange Width:
(Example: 6"= 600 x 1/100 inches) (Example: 1-5/8"= 1.625"= 162 x 1/100 inches)
All member depths are taken in 1/100 inches.
For all "T" sections member depth is the
inside to inside dimension.
All flange widths are taken in 1/100 inches.

Style: Material Thickness:
(Example: Stud or Joist Section = S) (Example: 0.054 in. = 54 mils; 1 mil = 1/1000 in.)
The four alpha characters utilized by
the designator system are:
S = Stud
T=Track Sections/Channels
U=Channel Sections
F=Furring Channels Sections
Material thickness is the minimum base metal thickness in mils.
Minimum base metal thickness represents 95% of the design thickness.


Section Flange Width Minimum
Thickness
(mils)
Reference
S125 1-1/4" 18 25
S137 1-3/8" 27 22
S162 1-5/8" 30 20 (Drywall)
S200 2" 33 20 (Structural)
S250 2-1/2" 43 18
54 16
68 14
97 12

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