Heavy Duty Adjustable Steel Prop Support Description

The adjustable steel prop — commonly known as an acrow prop — is the workhorse of formwork and shoring systems. It consists of an outer steel tube and an inner tube connected by a threaded spindle, allowing the working height to be set quickly and precisely. The wide welded steel base plate prevents sinking, while the top U-head plate or timber head distributes the load evenly, making the prop suitable for supporting concrete slabs, beams, columns and temporary structures.

As shown in our product photos, the props are available in a range of galvanized, red, yellow and blue painted finishes to suit site safety colour-coding or customer preference. Common outer tube diameters are 60 mm with wall thickness 2.5-2.8 mm, giving a robust, straight and torsion-resistant column.

At Shandong Stark Steel, our heavy duty props are manufactured from high-strength structural steel (Q235 / Q345 / Q355) with full welding of collars, base plates and U-heads. The hot-dip galvanized or painted finish ensures excellent rust resistance, long service life and dependable performance on demanding construction sites.

Key Features

• High load capacity: Engineered to carry up to 50 kN per prop with proper bracing, ideal for heavy concrete shoring.
• Quick height adjustment: Threaded spindle design allows fine height setting within seconds using a spanner pin — no cutting or welding required.
• Stable base: Wide welded steel base plate prevents sinking and ensures even load distribution on any ground condition.
• Multiple finishes: Available in hot-dip galvanized, red, yellow, blue painted or custom colours for site safety requirements.
• Versatile accessories: Compatible with U-head jacks, timber heads and flat plates for beams, slabs and column formwork.
• Compliant quality: Manufactured in accordance with EN 1065 and GB/T 5030, with load tested per batch.

Applications

Adjustable steel props are widely used in building construction, slab and beam formwork support, bridge falsework, basement shoring, renovation and reinforcement projects, as well as temporary structural bracing. They are often combined with frame scaffolding, ringlock systems and timber/steel formwork panels to create complete shoring and access solutions for contractors and rental companies.

Available Sizes & Specifications

Quality & Packaging

Each prop is load tested before shipment, with material certificates and third-party inspection (SGS / BV / TUV) available on request. The galvanized coating thickness meets EN ISO 1461 requirements (average ≥ 45 μm). Packaging: props bundled with steel straps, wooden pallets or crates, waterproof wrapping and seaworthy export packing by 20ft / 40ft container.

We provide free shoring layout advice and load calculation support for your project. Contact our sales team for a customized quotation and delivery schedule.