C sections are frequently selected for simple-span framing, wall openings and local supports. Z sections are particularly suitable for continuous roof framing because their offset profile allows adjacent members to form lapped connections over the primary frame.

Customized dimensions, steel thicknesses, lengths, hole patterns and corrosion-protection finishes are available for warehouses, factories, agricultural facilities and other pre-engineered steel buildings.

What We Supply

Our C/Z purlin supply scope can include:

• C-shaped roof purlins

• Z-shaped roof purlins

• C and Z wall girts

• Lapped purlin members

• Eave framing sections

• Door and window framing members

• Pre-punched connection holes

• Purlin cleats and brackets

• Sag rods and tie rods

• Connection bolts and fasteners

• Customized component labels

• Installation-sequence packaging

Products can be ordered separately or supplied as a complete secondary steel framing package.

Product Configurations

Standard C Sections

C-shaped members provide a straightforward connection solution for simple-span roof framing, wall girts, door frames and secondary supports.

Lapped Z Sections

Z-shaped members can overlap at the supporting frame, creating continuity between adjacent spans and improving load distribution across the roof system.

Pre-Punched Sections

Connection holes are processed according to approved drawings, reducing on-site drilling and helping maintain consistent installation positions.

Galvanized Purlins

Galvanized sections provide additional protection for buildings exposed to moisture, changing weather conditions or demanding service environments.

Painted Purlins

Painted finishes are available when the secondary framing needs a specified project color or an additional protective coating.

Special-Profile Members

Non-standard web heights, flange widths, lips, hole patterns and end details can be developed according to project requirements.

General Manufacturing Range

Performance Benefits

Reduced Field Processing

Members arrive at the construction site with the specified lengths and connection holes already completed.

Faster Material Identification

Each purlin can be marked according to its drawing number, roof zone, wall elevation or building axis.

Efficient Structural Weight

Cold-formed profiles use material efficiently, helping control the overall weight of the secondary framing system.

Consistent Component Geometry

Continuous roll forming provides stable profile dimensions and repeatable cross-sectional shapes.

Simplified Bolted Assembly

Pre-punched members can be connected quickly to prepared cleats and brackets on the primary steel frame.

Flexible Project Integration

C and Z sections can be coordinated with roof panels, wall cladding, insulation and other building-envelope components.

Efficient Container Loading

Nested profiles reduce unused space inside each bundle and improve international transportation efficiency.

How to Select C or Z Purlins

Choose C Purlins When:

• The framing uses simple spans

• Members are installed as wall girts

• Door or window openings require local framing

• Straightforward bracket connections are preferred

• Secondary supports require a symmetrical channel profile

Choose Z Purlins When:

• The roof contains several continuous spans

• Members need to overlap above primary rafters

• Structural continuity is required

• The building uses a long roof-framing layout

• Efficient load distribution between spans is important

Section selection should always be verified by the responsible structural engineer.

Application Areas

Coordination With Other Building Components

C/Z purlins can be supplied together with:

• Welded steel columns and beams

• Roof and wall bracing

• Eave struts

• Sag rods

• Tie rods

• Cleats and connection plates

• Roof panels

• Wall cladding

• Sandwich panels

• High-strength bolts

• Anchor bolts

• Other steel building accessories

Coordinated supply helps reduce compatibility problems between the primary structure, secondary framing and building envelope.

Packaging and Transportation

Purlins are nested to reduce bundle dimensions and then secured using steel straps. Timber supports or protective spacers can be added to make forklift handling easier.

Available packing options include:

• Waterproof wrapping

• Protective end covers

• Steel-frame pallets

• Timber dunnage

• Bundle identification tags

• Color-coded labels

• Customized shipping marks

• Packing by roof or wall area

• Packing according to installation sequence

Why Choose Our C/Z Purlins?

• Manufactured directly from approved drawings

• Customized profiles and thicknesses

• Accurate pre-punched connection holes

• Automated roll-forming production

• Individual component identification

• Complete secondary framing supply

• Strict dimensional inspection

• Multiple surface-protection options

• Installation-friendly packaging

• Professional international delivery support

FAQ

1. What information is required to manufacture customized purlins?

Please provide the profile dimensions, thickness, member lengths, hole details, quantities, surface treatment and project drawings.

2. Can you manufacture C and Z sections in the same order?

Yes. Different profiles, dimensions, thicknesses and lengths can be combined in one project order.

3. Can you produce purlins from a material schedule?

Yes. We can review your purlin schedule together with the related drawings before preparing the production list.

4. Can every member have a different hole layout?

Yes. Hole patterns can be processed according to the corresponding member or drawing number.

5. Can you produce lapped Z purlins?

Yes. Member lengths and hole locations can be manufactured according to the required overlap arrangement.

6. Can the purlins be marked according to the installation drawing?

Yes. Identification can include drawing numbers, member codes, axes, roof zones or wall elevations.