SDI Member · ANSI/SDI compliant
Steel purlin supplier in Melbourne
High-strength C & Z steel purlins in Melbourne for efficient roof and wall support.
Supplying Steel Purlins in Melbourne
General contractors and steel erectors in Melbourne rely on Miami Metal Deck for Steel Purlins on projects across Brevard County and the Space & Treasure Coasts region. We ship to Melbourne from Miami Gardens, offering 1-day service to major Florida cities and coordinating freight with your site schedule.
With Melbourne's coastal humidity and salt air, many engineers specify a G90 galvanized finish for its heavier zinc coating; we confirm the finish against your project specifications. Projects in Melbourne follow the Florida Building Code wind-load requirements, so we work directly from your engineer's deck schedule, gauges and attachment details.
Product guide
Product specifications for your Melbourne project
Compare profiles, dimensions, material options and applications to prepare your order. Select a product below to explore its technical details.
C Purlin
Roof and wall applications commonly use C purlin because it is both strong and light. This C-shaped section comes in depths and gauges from 12 GA to 20 GA, follows ANSI standards, and is finished with G60 or G90 galvanizing.
Dimensions and profile
| Property | Dimension |
|---|---|
| Commercial Name | C Purlin |
| Gauge | 12 to 20 |
| Thickness | 0.039" to 0.094" |
| Weights | 1.2 to 6.78 lbs/ft |
| Size Range | C4x2 to C12x3 |
| Web Depths | 4 to 12 inches |
| Flanges | 2 to 3 inches |
C purlins span from C4x2 up to C12x3, with web depths between 4 and 12 inches. Gauges 12 to 20 correspond to thicknesses of 0.039" to 0.094" and weights from 1.2 to 6.78 lbs/ft. Flanges measure 2 to 3 inches, with lips up to 0.787 inches.
Sizes, thicknesses and weights
| Purlin Size | Thickness | Weight (lbs/ft) | Gauge | Web | Flange | Lip |
|---|---|---|---|---|---|---|
| C12x3-12 | 0.094 | 6.78 | 12 | 12 | 3 | 0.787 |
| C12x3-14 | 0.075 | 5.4 | 14 | 12 | 3 | 0.787 |
| C10x3-12 | 0.094 | 5.48 | 12 | 10 | 3 | 0.787 |
| C10x3-14 | 0.075 | 4.37 | 14 | 10 | 3 | 0.709 |
| C8x3-12 | 0.094 | 4.87 | 12 | 8 | 3 | 0.787 |
| C8x3-14 | 0.075 | 3.86 | 14 | 8 | 3 | 0.709 |
| C8x3-16 | 0.059 | 3.02 | 16 | 8 | 3 | 0.591 |
| C6x2.5-12 | 0.094 | 3.83 | 12 | 6 | 2.5 | 0.709 |
| C6x2.5-14 | 0.075 | 3.03 | 14 | 6 | 2.5 | 0.669 |
| C6x2.5-16 | 0.059 | 2.41 | 16 | 6 | 2.5 | 0.630 |
| C6x2.5-18 | 0.047 | 1.94 | 18 | 6 | 2.5 | 0.591 |
| C5x2-12 | 0.094 | 3.19 | 12 | 5 | 2 | 0.630 |
| C5x2-14 | 0.075 | 2.5 | 14 | 5 | 2 | 0.630 |
| C5x2-16 | 0.059 | 1.99 | 16 | 5 | 2 | 0.591 |
| C5x2-18 | 0.047 | 1.59 | 18 | 5 | 2 | 0.591 |
| C5x2-20 | 0.039 | 1.35 | 20 | 5 | 2 | 0.591 |
| C4x2-20 | 0.039 | 1.20 | 20 | 4 | 2 | 0.472 |
| C4x2-18 | 0.047 | 1.41 | 18 | 4 | 2 | 0.472 |
| C4x2-16 | 0.059 | 1.76 | 16 | 4 | 2 | 0.512 |
| C4x2-14 | 0.075 | 2.21 | 14 | 4 | 2 | 0.512 |
| C4x2-12 | 0.094 | 2.82 | 12 | 4 | 2 | 0.512 |
Gauges and thicknesses
| Gauge | Bare steel thickness (in) | Weight (lbs/ft) | Typical applications |
|---|---|---|---|
| 12 | 0.094 | Up to 6.78 lbs/ft | Heavy structural applications, large spans. |
| 14 | 0.075 | Up to 5.4 lbs/ft | Standard commercial structural support. |
| 16 | 0.059 | Up to 3.02 lbs/ft | Medium-duty roof and wall support. |
| 18 | 0.047 | Up to 1.94 lbs/ft | Light-duty applications. |
| 20 | 0.039 | Up to 1.35 lbs/ft | Light framing and small spans. |
Because C purlins come in gauges 12 through 20, you can fit the section to your load and span. Gauges 12 and 14 are the better match for large structural work and heavy roofing loads. Gauges 18 and 20 handle lighter framing and short spans, and they save weight and cost.
Finishes and coatings
| Finish | Details |
|---|---|
| Galvanized G60 | Zinc coating of 0.6 oz/ft². Recommended for general environments. |
| Galvanized G90 | Zinc coating of 0.9 oz/ft². Ideal for highly corrosive environments. |
| Prime-Painted | Provides a base coat for additional protection or paint adhesion. |
| Bare Steel | Unfinished; typically for indoor use or controlled environments. |
Galvanized (G60 and G90) and prime-painted finishes are offered on C purlins. Use G60 for general environments for corrosion protection. G90 adds a heavier zinc coating for coastal or high-humidity settings. Prime-painted gives a base coat for jobs that need further coating.
Material and finish options
Our C purlins are rolled from high-strength 55 KSI steel. Pick a corrosion-resistant galvanized finish that meets ANSI standards, a painted option when appearance matters, or bare steel for custom applications. Every finish is meant to extend durability and performance.
Custom lengths
Need 6′-0″ pieces for a smaller project or spans of up to 40′-0″ for a larger one? We handle every length precisely and efficiently. Custom cutting gives an optimal fit with minimal waste.
C Purlin features
With a high strength-to-weight ratio, quick installation, and corrosion-resistant coatings, our C purlins fit industrial buildings, solar panels, agricultural structures, and commercial roof and wall systems. They are a practical pick for Melbourne projects.
High Strength-to-Weight Ratio
Offers excellent load-bearing capacity with little weight, cutting structural dead loads and easing installation.
Easy and Fast Installation
The light, symmetrical shape shortens labor time and keeps roof and wall installation straightforward.
Galvanized or Prime-Painted Finish
Durability and corrosion resistance improve with G60/G90 galvanized or prime-painted finishes.
Ideal for Custom Applications
Suits industrial buildings, solar panels, agricultural structures, and many other commercial structural applications.
Compliance with SDI Standards
Follows Steel Deck Institute and ANSI guidelines to ensure quality and code compliance.
Versatile Design Options
Sizes C4x2 through C12x3 and gauges 12 to 20 handle a broad set of structural needs and load requirements.
Installation and connections
Installation practices
- Set C purlins perpendicular to the primary structural supports.
- Anchor each one at every support with bolts, welds, or self-drilling screws.
- Where purlins overlap, fasten them with bolts or screws at 12" o.c.
Fasteners and attachments
- Secure purlins to primary frames using ½" diameter bolts.
- Use #12 self-drilling screws at 6" o.c. along supports; at overlaps, space them at 12" o.c.
- Lapped joints take #12 self-drilling screws at 12" o.c.
Confirm the profile, gauge, span, loads and connections against your project drawings and the applicable product load tables before ordering.
Applications
Roof and Wall Structural Framing
Commercial and industrial buildings use C purlins as solid support for roofing and wall cladding, in vented and non-vented structures alike.
Mezzanine and Racking Support
Strong enough for mezzanine floors and industrial racking, they are a dependable option for warehouses and factories.
Standards and product documentation
SDI (Steel Deck Institute) specifications govern the C purlin, so design and performance meet a high standard.
C Purlin questions
What are C purlins, and where are they used?
A C purlin is a cold-formed steel structural member in the shape of the letter 'C'. It mostly provides structural support for roofs and walls in industrial, commercial, and agricultural buildings.
C purlin versus Z purlin: what is the difference?
A C purlin's symmetrical 'C' shape brings strength and stability, which is ideal for simple spans. A Z purlin's 'Z' shape allows overlapping, which suits longer continuous spans that need extra rigidity.
In what gauges and materials can I get C purlins?
They come in gauges 12 to 20, made of galvanized steel (G60/G90) or prime-painted steel depending on project requirements.
What advantages do C purlins offer?
Advantages include high structural strength in a lightweight profile, easy installation from a standardized design, versatility across construction types, and corrosion resistance when galvanized. Durability and low maintenance also keep them cost-efficient.
Is it possible to get custom C purlins in Melbourne?
Yes. Custom C purlins are made to length (6' to 40'), gauge, and finish, following your project specifications.
Z Purlin
For roof and wall applications, Z purlin offers superior load-bearing capacity, and its overlapping design carries longer spans. Gauges 12–18 are available, the product meets ANSI standards, and G60 and G90 galvanized finishes are offered.
Dimensions and profile
| Property | Dimension |
|---|---|
| Commercial Name | Z Purlin |
| Gauge | 12 to 18 |
| Thickness | 0.047" to 0.094" |
| Weights | 1.94 to 6.78 lbs/ft |
| Size Range | Z6x2.5 to Z12x3 |
| Web Depths | 6 to 12 inches |
| Flanges | 2.5 to 3 inches |
Z purlins cover Z6x2.5 to Z12x3, with web depths of 6 to 12 inches. Gauges 12 through 18 (thickness 0.047" to 0.094") carry weights of 1.94 to 6.78 lbs/ft. Flanges are 2.5 to 3 inches, and lips reach 0.787 inches.
Sizes, thicknesses and weights
| Purlin Size | Thickness | Weight (lbs/ft) | Gauge | Web | Flange | Lip |
|---|---|---|---|---|---|---|
| Z12x3-12 | 0.094 | 6.78 | 12 | 12 | 3 | 0.787 |
| Z12x3-14 | 0.075 | 5.4 | 14 | 12 | 3 | 0.787 |
| Z10x3-12 | 0.094 | 5.48 | 12 | 10 | 3 | 0.787 |
| Z10x3-14 | 0.075 | 4.37 | 14 | 10 | 3 | 0.709 |
| Z8x3-12 | 0.094 | 4.87 | 12 | 8 | 3 | 0.787 |
| Z8x3-14 | 0.075 | 3.86 | 14 | 8 | 3 | 0.709 |
| Z8x3-16 | 0.059 | 3.02 | 16 | 8 | 3 | 0.591 |
| Z6x2.5-12 | 0.094 | 3.83 | 12 | 6 | 2.5 | 0.709 |
| Z6x2.5-14 | 0.075 | 3.03 | 14 | 6 | 2.5 | 0.669 |
| Z6x2.5-16 | 0.059 | 2.41 | 16 | 6 | 2.5 | 0.630 |
| Z6x2.5-18 | 0.047 | 1.94 | 18 | 6 | 2.5 | 0.591 |
Gauges and thicknesses
| Gauge | Bare steel thickness (in) | Weight (lbs/ft) | Typical applications |
|---|---|---|---|
| 12 | 0.094 | Up to 6.78 lbs/ft | Heavy structural applications, large spans. |
| 14 | 0.075 | Up to 5.4 lbs/ft | Standard commercial structural support. |
| 16 | 0.059 | Up to 3.02 lbs/ft | Medium-duty roof and wall support. |
| 18 | 0.047 | Up to 1.94 lbs/ft | Light-duty applications and agricultural buildings. |
Z purlins come in gauges 12 through 18 to suit different loads and spans. Gauges 12 and 14 are best for big structural applications, and gauges 16 and 18 handle medium to light-duty work in commercial and agricultural structures for Melbourne builders.
Finishes and coatings
| Finish | Details |
|---|---|
| Galvanized G60 | Zinc coating of 0.6 oz/ft². Recommended for general environments. |
| Galvanized G90 | Zinc coating of 0.9 oz/ft². Ideal for highly corrosive environments. |
| Prime-Painted | Provides a base coat for additional protection or paint adhesion. |
| Bare Steel | Unfinished; typically for indoor use or controlled environments. |
Galvanized (G60 and G90) and prime-painted finishes are available on Z purlins. G60 resists corrosion in general environments. G90 has an enhanced zinc coating for coastal or high-humidity applications. A prime-painted Z purlin carries a protective base coat for projects that need additional coatings.
Material and finish options
Each Z purlin is rolled from high-strength 55 KSI steel. Galvanized finishes meeting ANSI standards provide corrosion resistance, painted options offer tailored aesthetics, and bare steel serves custom applications. Every finish is designed to enhance durability and performance.
Custom lengths
Smaller projects can order precise lengths from 6′-0″, and larger constructions can order spans up to 40′-0″. We handle all dimensions with precision and efficiency, and custom lengths mean an optimal fit and minimal waste.
Z Purlin features
Superior load-bearing capacity, an overlapping design for extended spans, and corrosion-resistant finishes define our Z purlins. They work well in large-scale commercial, industrial, and agricultural roofing and wall systems.
Superior Load-Bearing Capacity
Built for higher structural loads, with an overlapping design that gives continuous-span efficiency.
Overlapping for Extended Spans
Z purlins overlap and interlock at intermediate supports, acting as a continuous beam for better structural efficiency over longer distances.
Corrosion-Resistant Finishes
G60 and G90 galvanized or prime-painted finishes stand up to harsh environmental conditions with excellent durability.
Cost-Effective
Longer spans and fewer intermediate supports lower material and labor costs on large roofing and wall systems.
Compliance with SDI Standards
Steel Deck Institute and ANSI guidelines are met, supporting quality and code compliance.
Versatile Applications
Sizes Z6x2.5 to Z12x3 and gauges 12–18 serve commercial, industrial, and agricultural structural needs.
Installation and connections
Installation practices
- Place Z Purlins perpendicular to the primary structural supports.
- Anchor at every support with bolts, welds, or self-drilling screws.
- At intermediate supports, overlap and interlock the purlins and fasten at 12" o.c.
Fasteners and attachments
- Secure purlins to primary frames using ½" diameter bolts.
- Use #12 self-drilling screws at 6" o.c. along supports; at overlaps, space them at 12" o.c.
- Lapped joints take #12 self-drilling screws at 12" o.c.
Confirm the profile, gauge, span, loads and connections against your project drawings and the applicable product load tables before ordering.
Applications
Long-Span Roofing Systems
Roofing on large commercial and industrial buildings gains from continuous spans and fewer intermediate supports. Overlapping maximizes structural efficiency across long roof runs.
Continuous Wall Cladding Support
Z purlins act as continuous wall girts behind metal cladding in industrial, commercial, and agricultural buildings. The interlocking profile gives superior lateral stability.
Standards and product documentation
The Z purlin conforms to SDI (Steel Deck Institute) specifications, which keeps design and performance standards high.
Z Purlin questions
What is a Z purlin, and what is it for?
A Z purlin is a cold-formed steel member with a 'Z' shaped section. It is used mainly as roof purlins and wall girts in commercial, industrial, and agricultural metal building systems.
Why choose Z purlins over C purlins?
Z purlins overlap and interlock at intermediate supports, producing continuous-beam behavior. That gives greater structural efficiency and capacity on longer spans than simple-span C purlins.
What sizes and gauges do Z purlins come in?
Sizes run from Z6x2.5 to Z12x3 in gauges 12 through 18, with web depths of 6 to 12 inches and flanges of 2.5 to 3 inches.
Which finishes are offered on Z purlins in Melbourne?
G60 and G90 galvanized finishes provide corrosion resistance, and prime-painted finishes serve projects that need additional coatings.
Can Z purlins be made to custom specifications?
Yes. Custom Z purlins are available with length (6' to 40'), gauge, and finish tailored to your project.
Before you order
Order Steel Purlins for your Melbourne project
Share your drawings or a material list and our team will check quantities, profiles and cut lengths. We also prepare takeoffs and shop drawings, then send pricing and delivery options for the Melbourne job site.
Start your quoteHelpful details for an accurate quote
- Your Melbourne project address and when you need material on site.
- Drawings or a material list with quantities and cut lengths.
- Specified profile, dimensions, gauge and finish.
- Connection details, load tables and any supporting documentation.
How We Work
We Guide You Through the Process
From manufacturing to delivery, we ensure precision, efficiency, and compliance with industry standards.
Takeoff and Shop Drawings Services
We provide specialized takeoff services for accurate quotations and detailed shop drawings to produce optimized cutting lists for sheets, ensuring efficient execution and waste-free outcomes in your projects.
Manufacture
We manufacture metal decks to SDI and ANSI standards, ensuring strength, durability, and compliance. We provide custom lengths and high-precision fabrication for optimized performance in roof, floor, and form deck applications.
Swift Deliveries & Nationwide Reach
While based in South Florida, we serve clients nationwide, ensuring quality, efficiency, and timely deliveries across the U.S., reflecting our commitment to excellence without boundaries.
Frequently Asked Questions
Do you supply steel purlins in Melbourne?
Yes. We deliver C and Z purlins to Melbourne with 1-day delivery available. Contact us at 305-760-2575.
What is the difference between C and Z purlins?
Z purlins overlap and interlock at supports for continuous-span efficiency. C purlins suit simple-span applications where continuity is not required.
What do steel purlins do?
Steel purlins hold up roof and wall sheeting and pass loads from the cladding to the main structural frame. They run horizontally across a building's rafters or columns.
Which steel purlins are most common?
C and Z Purlins. C Purlins fit simple, non-overlapping spans, whereas Z Purlins overlap and interlock for continuous spans, which makes them more structurally efficient over long distances.
How do C and Z Purlins differ most?
Z purlins overlap and interlock at intermediate supports for more efficient continuous beam behavior. C purlins are for simple-span applications where that continuity is unnecessary.
Do purlins support both roofs and walls?
Yes. C and Z purlins work as roof purlins (holding roof panels) and as wall girts (holding wall cladding), so they are versatile in metal building systems.
What materials and coatings are offered?
All purlins come in galvanized steel with G90 or G60 coatings for corrosion resistance, performing well over the long term in commercial, industrial, and agricultural environments.