Galvanized Adjustable Steel Prop for Formwork Shoring and Scaffolding

In concrete construction and temporary shoring, reliable vertical support is essential for safety and structural integrity. Adjustable Steel Props (also known as acrow props, telescopic props, or shoring posts) are the industry's go-to solution for supporting formwork, slabs, beams, and falsework—offering fast height adjustment, high load capacity, and durable performance for residential, commercial, and infrastructure projects worldwide.

An adjustable steel prop is a telescopic vertical support system consisting of an inner tube and outer tube with a series of pin holes and a threaded adjustment collar. The pin holes provide coarse height adjustment, while the threaded collar allows for fine-tuning, enabling continuous height adjustment within a specified range. Manufactured from high-grade structural steel (typically Q235 or Q355), these props are designed to support concrete formwork during pouring and curing. They are commonly used as shoring posts for slab formwork, beam formwork, and early stripping systems.

The combination of pin holes and threaded collar allows for quick coarse adjustment and fine-tuning. Most props offer an adjustment range of 500–800mm, accommodating varying floor-to-floor heights without cutting or modifying components. This eliminates the need for custom-length props and speeds up site setup.

Manufactured from high-grade steel tubing, adjustable steel props deliver impressive load performance. Standard props support working loads of 15–25 KN (approximately 1.5–2.5 tonnes), while heavy-duty versions with 76mm outer tubes can reach 30–40 KN (3–4 tonnes). This capacity makes them suitable for supporting heavy fresh concrete loads and multiple floor levels.

With proper handling and maintenance, steel props can be reused 200–300 times or more. Hot-dip galvanized or painted finishes provide corrosion resistance, extending service life even in demanding site conditions. The robust construction resists bending and deformation under repeated use.

Each prop features a safety pin to prevent accidental collapse and a slotted base plate for secure floor contact. Many models also include a captive nut system to prevent component loss during transport. The safety factor of 2.5:1 provides a significant margin against overload conditions.

Adjustable steel props work seamlessly with H20 timber beams, aluminum beams, steel formwork panels, and early stripping systems—making them a versatile choice for any concrete forming application. The standard dimensions ensure compatibility with most formwork accessories.

• Slab formwork support — primary vertical shoring for concrete floor slabs

• Beam formwork support — under H20 or steel beams

• Early stripping systems — fast-cycle floor construction with drop-heads

• Temporary shoring — renovations, openings, and underpinning work

• Bridge falsework — support for bridge deck formwork

• Residential and commercial construction — general formwork support

• Premium Q235/Q355 steel — high strength, consistent quality

• Precision welded construction — no defects, reliable performance

• Full height range — sizes to suit any floor-to-floor requirement

• Safety features included — safety pin, slotted base plate, captive nut

• Hot-dip galvanized finish — corrosion protection for long service life

• Bulk packaging options — palletized or bundle packing for easy handling

Need reliable vertical support for your next concrete pour?

Contact us today for a free quote, detailed load chart, or sample prop specifications.