Name Check / Steel Suppliers
Kspan vs Interspan
Two Australian steel names sound like siblings. However, they work in different worlds. One rolls battens in Adelaide. Meanwhile, the other engineers post tensioned concrete on major projects across Australia and beyond. So if the search box blurred them together, this page pulls them apart.
SEC 01 / Specifications
Product specification comparison
In fact, the clearest comparison is simply what each company would deliver to your site.
Interspan is a Sydney headquartered specialist engineering group, founded in 2006. Specifically, it designs and installs post tensioning systems for concrete structures, across slab, multi strand and stress bar systems. It also delivers structural strengthening and remediation work. For example, that covers carbon fibre strengthening, concrete repair and cathodic protection. Moreover, it operates across Australia and internationally, with a workforce in the hundreds. Then in 2026 it became part of the global DYWIDAG Group. Kspan, in contrast, is an Adelaide fabricator with a deliberately narrow catalogue. We roll steel top hat battens, in a 22mm ceiling profile and a 40mm roof profile. The steel is coated G550 high tensile, in standard or custom lengths.
| Spec | Kspan | Interspan |
|---|---|---|
| Home base | Adelaide, SA | Sydney, NSW |
| Field | Cold formed steel battens | Post tensioned concrete engineering |
| Delivers | Ceiling, roof and top hat battens | PT systems, strengthening, remediation |
| Typical client | Builders, roofers, framers, owner builders | Major construction and infrastructure |
| Footprint | Adelaide facility, SA wide despatch | National and international projects |
SEC 02 / Quality control
Quality control and manufacturing
The two companies answer to different kinds of rigour, and both kinds are real. For example, post tensioning lives in the world of certified systems, engineered design and site verification. After all, failure on those structures is not an option. Indeed, the Sydney group’s standing on major projects speaks to how seriously that is done. Batten fabrication, however, lives in the world of repeatability. Specifically, that means steel to AS 1397 and sections made to comply with the relevant Australian Standards. It also means dimensional consistency, batten after batten. After all, a roof plane is only as true as the least consistent piece in it. Kspan runs one profile family through one Adelaide facility precisely so that consistency is the whole job.
SEC 03 / Local supply
Local Adelaide supply benefits
For a South Australian build that needs battens, geography does quiet, daily work. First, fabrication happens in Adelaide, and quotes go back within one business day on SA trade hours. Also, custom lengths and bulk runs come off the same line that rolls the standard stock. Finally, despatch reaches metro, the hills and regional SA without an interstate leg. So when the setout changes mid job, a top up run is a phone call and a short drive. It is not a freight booking.
SEC 04 / Choosing right
Choosing the right batten for your project
Your search may really have been about post tensioned slabs, transfer structures or strengthening an existing building. If so, Interspan and your structural engineer are the right conversation. In fact, none of our products replace that work. However, if it was about the steel that carries a roof or ceiling, the choice is a batten question. First, pick the profile by duty: 22mm for ceilings, 40mm for roofs. Then pick the base metal thickness by span and wind class, and the lengths by the setout. The full range is on the products page. Finally, spans get checked against the published data before anything is rolled.
Battens for the job you actually have
First, send the profile, spans, wind class and lengths. Then we size the section against the published data, quote within one business day and despatch across SA.
Details about Interspan are drawn from public sources, including its own materials and 2026 acquisition announcements. They are provided to help readers reach the right business. In short, the two companies are separate, unaffiliated and work in different fields. Similarly, no comparison of quality is made or implied. So confirm current specifications directly with any supplier before ordering.
