Home > What We Do > Building Products > > C & Z Purlins
Building ProductsProduct available in: Vic, Sa, Qld
Apex Purlins and Girts are roll-formed from Hi-Tensile Galvanised steel. They are primarily used to provide lightweight, economical, efficient roofing and cladding support systems for framed structures. Apex Purlins and Girts are available in a range of different sizes and configurations.
C-sections have equal flanges and may be used in single spans and unlapped continuous spans in multi-bay buildings. Their freestanding stable shape allows easy handling and storage and is easily adapted for use in small and medium sized buildings as structural framework.
Z-sections feature one broad and one narrow flange allowing the two sections to fit together snugly, making them suitable for lapping. Z sections of the same depth and different thickness’ can be lapped in any combination. Purlins and Girts that are lapped form a structurally continuous line along the length of the building, a factor that contributes significantly to the reduction in building costs. Apex offers the added flexibility of downturn lips and adjustable top flanges for all sizes. Downturn lip purlins are ideal in applications where environmental conditions or build up of substances like dust or grain are a consideration. For special or large projects, Apex is able to customise sections outside the standard range to suit your individual requirements.
Purlins Load Tables – Click Here
Ultra-Purlins Information – Click Here
Purlin – Bridging
Purlin – Accessories
![]() | ![]() |
![]() For special projects the size of the hole, | HOLES– Apex Purlins and Girts are available custom punched to your requirements complying with the Australian institute of steel construction gauge lines as tabled below. | ||||||||||||||||||||||||
![]() |
Cleat Connection | Lapped Connection (Cleatless) | |
The cleat connection is assembled by fastening two bolts through the web of the purlin to a cleats so that the load is supported via the web of the sections. The connections can be a single thickness to match the end connection section, or the internal support connection of a lapped connection. | A lapped connection is the fixing of purlins through the bottom and/or top flange of the purlin is used in certain variations of construction. The capacity tables are not to be used for lapped connections, for these types of connections there are more considerations (both strength and accessibility) and construction concerns that need to be considered. |
Enquire about Product
- Applications & Use
- Specifications
- More Info
C & Z Dimensions
Purlin Section | W (mm) | F(mm) | L(mm) | ThicknessBMT(mm) | Section Mass(kg/m) | Purlin Section | W(mm) | F1(mm) | F2(mm) | L(mm) | ThicknessBMT(mm) | Section Mass(kg/m) | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C Section | Z Section | ||||||||||||
C10010 | 102 | 51 | 12.5 | 1.0 | 1.78 | Z10010 | 102 | 53 | 49 | 12.5 | 1.0 | 1.78 | |
C10012 | 102 | 51 | 13.0 | 1.2 | 2.10 | Z10012 | 102 | 53 | 49 | 13 | 1.2 | 2.10 | |
C10015 | 102 | 51 | 14.0 | 1.5 | 2.62 | Z10015 | 102 | 53 | 49 | 14.0 | 1.5 | 2.62 | |
C10019 | 102 | 51 | 15.0 | 1.9 | 3.29 | Z10019 | 102 | 53 | 49 | 15.0 | 1.9 | 3.29 | |
Z15010 | 152 | 64 | 14.5 | 1.0 | 2.37 | Z15010 | 152 | 65 | 61 | 14.5 | 1.0 | 2.37 | |
C15012 | 152 | 64 | 15.0 | 1.2 | 2.89 | Z15012 | 152 | 65 | 61 | 15.0 | 1.2 | 2.89 | |
C15015 | 152 | 64 | 16.0 | 1.5 | 3.59 | Z15015 | 152 | 65 | 61 | 16.0 | 1.5 | 3.59 | |
C15019 | 152 | 64 | 17.0 | 1.9 | 4.51 | Z15019 | 152 | 65 | 61 | 17.0 | 1.9 | 4.51 | |
C15024 | 152 | 64 | 18.5 | 2.4 | 5.70 | Z15024 | 152 | 65 | 61 | 18.5 | 2.4 | 5.70 | |
C20015 | 203 | 76 | 16.0 | 1.5 | 4.49 | Z20015 | 203 | 79 | 74 | 16.0 | 1.5 | 4.49 | |
C20019 | 203 | 76 | 19.5 | 1.9 | 5.74 | Z20019 | 203 | 79 | 74 | 19.5 | 1.9 | 5.74 | |
C20024 | 203 | 76 | 21.0 | 2.4 | 7.24 | Z20024 | 203 | 79 | 74 | 21.0 | 2.4 | 7.24 | |
C25019 | 254 | 76 | 19.0 | 1.9 | 6.5 | Z25019 | 254 | 79 | 74 | 19.0 | 1.9 | 6.5 | |
C25024 | 254 | 76 | 20.5 | 2.4 | 8.16 | Z25024 | 254 | 79 | 74 | 20.5 | 2.4 | 8.16 | |
C30024 | 300 | 96 | 28.0 | 2.4 | 10.09 | Z30024 | 300 | 100 | 93 | 28.0 | 2.4 | 10.09 | |
SOUTH AUSTRALIA | |||||||||||||
Regular Sections | W | F1 | F2 | L | Thickness | Ag | Ix | Iy | Zx | J | Unit Weight | ||
mm | mm | mm | mm | mm | mm² | x10⁶mm⁴ | x10⁶mm⁴ | x10³mm³ | mm⁴ | kg/m | |||
C300-30 | 300 | 96 | 96 | 28 | 3 | 1574 | 21 | 1.86 | 140 | 4723 | 12.76 | ||
Z300-30 | 300 | 100 | 92 | 28 | 3 | 1574 | 21 | 2.84 | 140 | 4723 | 12.76 | ||
C350-30 | 350 | 124 | 124 | 30 | 3 | 1904 | 35 | 3.70 | 203 | 5713 | 15.25 | ||
Z350-30 | 350 | 128 | 120 | 30 | 3 | 1904 | 35 | 5.80 | 205 | 5711 | 15.25 | ||
Super Sections | W | F1 | F2 | L | Thickness | Ag | Ix | Iy | Zx | J | Unit Weight | ||
mm | mm | mm | mm | mm | mm² | x10⁶mm⁴ | x10⁶mm⁴ | x10³mm³ | mm⁴ | kg/m | |||
SC300-30 | 300 | 91 | 91 | 33 | 3 | 1574 | 20 | 1.76 | 140 | 4723 | 12.7 | ||
SZ300-30 | 300 | 95 | 87 | 33 | 3 | 1574 | 20 | 2.70 | 140 | 4723 | 12.7 | ||
SC350-30 | 350 | 119 | 119 | 35 | 3 | 1904 | 35 | 3.60 | 201 | 5713 | 15.21 | ||
SZ350-30 | 350 | 123 | 115 | 35 | 3 | 1904 | 35 | 5.60 | 204 | 5713 | 15.21 | ||
Sizes | |||||||||||||
Section | C150-12 | C150-15 | C150-19 | C150-24 | C200-15 | C200-19 | C200-24 | C250-19 | C250-24 | ||||
Thickness | 1.2 | 1.5 | 1.9 | 2.4 | 1.5 | 1.9 | 2.4 | 1.9 | 2.4 | ||||
Web | 152 | 152 | 152 | 152 | 203 | 203 | 203 | 254 | 254 | ||||
Flange E | 62 | 62 | 62 | 62 | 74 | 74 | 74 | 74 | 74 | ||||
Flange F | 62 | 62 | 62 | 62 | 74 | 74 | 74 | 74 | 74 | ||||
Lip | 16.5 | 17.5 | 18.5 | 19.5 | 17.5 | 21 | 22 | 20.5 | 21.50 | ||||
Radius | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | ||||
Coil Width | 295 | 295 | 295 | 295 | 370 | 375 | 375 | 425 | 425 |
Materials:
Apex Purlins and Girts are roll-formed from a Galvanised, high strength, steel strip complying with AS1397.
Minimum yield stress: 450Mpa
Standard base steel thickness: 1.0, 1.2, 1.5, 1.9 and 2.4
Zinc coating of Z350 (350g/m2) minimum coating mass) is the standard coating class provided.
Other coatings, grades and materials may be available, subject to inquiry.
Nesting Channel:
Also called lipless C Purlins they allow for use with our standard range of C section purlins slotting into them. Manufactured from high tensile galvanised steel they accommodate C Purlins from 100-250mm web height. They are the perfect solution for many applications such as mezzanine floors or awning and patio systems where the purlin framing can be installed in one plain minimising the height required.
Purlins Load Tables – Click Here
Ultra-Purlins Information – Click Here
ADVERSE CONDITIONS
If material is to be used within 1km of salt marine, industrial or corrosive environments please contact our Apex sales staff.
WARRANTIES
Our products are supported by Bluescope Steel Limited and a full warranty is available.
LENGTHS / TRANSPORT
Apex Building Products can custom cut lengths to your requirements. Due to transport restrictions it is advisable to check with our office the maximum length.
HANDLING
Care should be taken at all times when handling Corrugated. Packs must be kept dry and stored above ground level, should the sheets become wet separate immediately and individually wipe and place in an area to dry.
COMPATIBILITY
ZINCALUME®steel sheeting is compatible with most roofing products. It is NOT recommended to use lead flashing/nails, copper or copper alloy materials with or in run-off situations.
CUTTING
Apex Building Products provides this service, however sheets may be cut using a power saw with a metal cutting blade.COLORBOND®steel sheeting must be cut with the coloured surface facing the ground. Ensure that no hot particles or debris come into contact with theCOLORBOND®.
CLEAN UP
To prevent premature corrosion at the completion of each day ensure the sheeting area is cleared of all debris, including nails, rivets, rags and all cutting or drilling filings.
DELIVERY
Apex Building Products delivers to site within 1 to 2 days. To prevent any damage we require suitable arrangements to be made for unloading. Unloading by crane, ensure the load is evenly spread, if crane unavailable adequate manpower is required.