Modular steel formwork, stocked in Johannesburg and built for repeat pours

Oss-Form supplies 600x1200 panels, adjustable column clamps, tie rods, slab props and casting accessories to civil contractors, precast yards and small building teams. Galvanised and powder-coated finishes hold up on coastal sites, and every item carries its panel weight, load rating and compatible hardware so a foreman can plan stripping times and truck loads before the crew arrives.

Bundles are quoted per project, so you order a repeatable panel count instead of guessing at the gate.

Browse the catalogue Request a quote

Not sure where to start? Read how we quote and deliver or go straight to what we stock.

Ways to start a formwork order

Most crews don't buy a whole wall set on day one. They start with a kit that matches the next pour, then add panels and clamps as the site repeats. Below are the three bundles we quote most often, each built from the same 600x1200 module so hardware stays interchangeable.

Starter Kit

For small building teams and first-time formwork users. Enough panels and clamps to cast a short wall run or a single column box, packed so one bakkie load covers the trip.

8 x 600x1200 galvanised panels
Clamp set and tie rods for the panel count
Striking wedge and spanner
Stacking frame for yard storage

Choose starter kit

Wall Set

A repeatable wall package for civil contractors running the same pour line week after week. Panel counts are quoted per project so the crew orders the same module instead of guessing at the face.

Panels sized to the wall drawing, in 600 mm increments
Adjustable column clamps for returns and corners
Powder-coated option for colour-coded stock
Reusability notes per item for stripping cycles

Choose wall set

Slab Package

Props, drop heads and cone plugs for suspended slab cycles. Load ratings are stamped on each tube, so the foreman can match props to the pour drawing without a separate table.

Props in three extended heights
Drop heads and cone plugs on the tie rod thread
Thread cleaning and service notes included
Bulk replacement parts quoted separately

Choose slab package

Not sure which bundle fits the next pour? The full catalogue lists panel weight, load rating and compatible hardware for every item.

What the catalogue actually covers

Every line item is written for the person who has to plan the pour, not just the buyer. Panel weight, load rating, matching hardware and reusability notes sit on the same page, so a foreman can work out stripping times and truck loads before the order is placed.

Modular panels and wall sets

Standard 600x1200 faces with folded edges that take clamp jaws without shimming. Order a starter kit or repeat the same panel count across a full wall run.

Column clamps and tie rods

Slotted side rails and threaded ties square columns from 200 mm to 800 mm. The same jaws work on wall returns, so the hardware pool on site stays small.

Slab props and cone systems

Props in three extended heights with the safe working load stamped on the tube. Drop heads and cone plugs share the tie rod thread for a predictable strike sequence.

Finishes for coastal yards

Galvanised is the default where salt air eats bare steel. Powder-coated panels are available when a yard wants colour-coded stock by project or crew.

Stock held in Johannesburg

Panels, clamps and accessories ship from one yard to Gauteng, KwaZulu-Natal and the Western Cape. Bundles are quoted per project, not per guess.

Striking tools and spares

Wedges, spanners and replacement clamps sit alongside the main panels. Reusability notes flag when a prop or tie should come out of service.

Full panel and hardware breakdowns sit in Products, and the quoting and delivery process is set out in Offerings.

Questions that come up before the first pour

Short answers on panel counts, finishes, hardware compatibility and how stock moves out of Johannesburg. If your question is about a specific pour drawing, the contact page is the faster route.

Can I mix 600x1200 panels with older formwork already on site?

The folded edge profile is made to take standard clamp jaws, so most older clamps will grip without shimming. If the jaws are worn or the edge has been hammered flat, the joint will pull out of line under load. Send a photo of the clamp before ordering, and we will say whether it is worth reusing.

Galvanised or powder-coated for a coastal site?

Galvanised is the default for anything within a few kilometres of the coast, because the zinc layer keeps working after the panel face is scratched. Powder coating is chosen more for yard organisation, where colour-coded stock makes it easier to track which panels belong to which contract.

How do I work out how many panels a wall needs?

Start from the pour height and the run length, then divide by the 600 mm module and add the corners and stop ends. Most crews order a couple of extra panels for the first cycle and adjust once they see how the set strips. Bundles are quoted per project so the panel count stays repeatable across floors.

Where does stock ship from, and how long does delivery take?

Stock is held in Johannesburg and goes out to Gauteng, KwaZulu-Natal and the Western Cape. Lead time depends on whether the order is a starter kit pulled from the shelf or a full wall set that needs to be picked and checked. Confirm the delivery address and site access when you request the quote.

Do replacement clamps and tie rods fit the same panels?

Yes. Clamps, tie rods, cone plugs and drop heads share the same thread and edge dimensions across the range, which keeps the hardware pool small on site. Replacement parts are listed with the same compatibility notes as the panels, so a foreman can order a single clamp without guessing the size.

When should a prop or panel be taken out of service?

Each item carries reusability notes covering thread cleaning, edge straightness and the point where a tube or face should be retired. Bent props and panels with rolled edges are the usual reasons a set gets pulled. The notes are written for the person checking the gear in the yard, not for a filing cabinet.

Still working through a spec? The help page covers ordering and delivery questions, and contact reaches the Johannesburg desk directly.