Powder Coated Painting Scaffolding Post Shorings Steel Acrow Props for Building Formwork

Product Description

Powder Coated Painting Scaffolding Post Shorings Steel Acrow Props for Building Formwork

Product Description

Adjustable prop

steel prop are widely used in different supporting areas. Slab formwork and table formwork with its high loading capacity may meet maximum
stability for your site jobs. Slab thickness up to 300mm.    
 
1.Diameter of inner tube: 40mm,48mm,etc. 
2.Diameter of outer tube:  48m,56mm,60mm etc. 
3.Wall thickness:1.6mm,1.7mm,1.8mm,2mm etc. 
4.Adjustable length:heavy duty 1800-3200mm,2100-3400mm,2200-3900mm ,
   2200-4000mm,3000-5000mm,3500-4000mm etc.        
   light duty 1600-3000mm,1800-3500mm,2000-3500mm etc.  
5.Base plate:120*120*4mm/4.5mm/5mm,150*150*6mm 
6.Shape of base plate:flower or square 
7.Surface : paint,hot dipped galvanized,pre-galvanized,electrical galvanized    
8.Type:with hands cup or open thread 
9.OEM service is available
10.Package:in bundle or in bulk                 

Heavy duty prop 

MIN	MAX	Inner tube	Outer tube
1.8m	3.2m	48*2.0mm	60*2.0mm
2.1m	3.4m	48*2.0mm	60*2.0mm
2.2m	4.0m	48*2.0mm	60*2.0mm
2.4m	3.9m	48*2.0mm	60*2.0mm
3.5m	4.0m	48*2.0mm	60*2.0mm
3.0m	5.0m	48*2.0mm	60*2.0mm

Light duty prop 

MIN	MAX	Inner tube	Outer tube
1.6m	3.0m	40*2.0mm	48*2.0mm
		48*2.0mm	56*2.0mm
1.8m	3.5m	40*2.0mm	48*2.0mm
		48*2.0mm	56*2.0mm
2.0m	3.5m	40*2.0mm	48*2.0mm
		48*2.0mm	56*2.0mm

Props Manufacturing Steps

Step 1, CUTTING

Steel pipes (both external and internal) are then cut to size with a +/-1 mm tolerance. Cutting is done using automatic cutting machines: a bundle of pipes is placed on the loader which selects one pipe at a time. It is then loaded on a positioning device and cut precisely at the desired height. Lastly, the pipe is unloaded into a container for the subsequent step.

Step 2, DRILLING

Then there follows the drilling step, which is carried out depending on the type of pipe. Due to the new technologies, the drilling is quick, precise and burr-free

Step 3, WELDING

External pipes proceed to the welding step, where - suitably positioned - they are assembled with the base plate and the end is threaded . Once drilled, the internal pipes undergo the same welding process but concerning the plate only.

Step 4, COATING AND GALVANISING

Once welded, the props can be: dip coated, cold-dip galvanised (electrolytically), for a more durable protection with respect to dip coating and for better aesthetic quality, or hot dip galvanised for a basically permanent protection, suitable for all environments and withstanding external atmospheric agents.

Step 5, FINISH

Depending on the product, next come the completion steps including: mounting an outer sleeve on the covered threading or a forged steel ring nut.

Step 6, CUSTOMISATION

Customised products are available upon request: for example with a ring nut bearing the customer's colours, or the customisation of the prop using stickers bearing the customer's logo.

Step 7, PACKAGING AND SHIPMENT

Once concluded with machining, we proceed to the packaging step. Packages usually come with 40 pieces, strapped. The material is then loaded into a truck or container and shipped.

 
 

 

It is commonly used material for construction projects. Such as reinforced concrete structure, dam and other big projects.

It can change seepage path and extend the infiltration routes. It is anti-corrosion, suitable for construction condition that contains corrosion water. It can guarantee the protecting effect of projects.

 

It is also used in small area projects, that has high requirements for anti-leaking. Such as pouring holes and electric furnace holes in smelting plants.

 

Our Advantages

♦Surface is smooth, without flow paint and less paint.
♦Welding is full, without lack and fake welding.
♦Strong Packing and easy for handle.
♦Prop Type: Base Plate/ U-head Plate
♦Plate Shape: Flower / Square
♦Tolerence Control is strict.

DESCRIPTION: Steel prop, Scaffolding Steel Prop
Scaffolding steel props are mainly used for supporting slab formwork.Numerous practical features ensure fast and safe handling.Scaffolding Steel Planks are frequently used in scaffolding acess platform and construction area, which is convenient for workers to walk through on it by providing strong support during usage. It is a fitting part of scaffolding, commonly be used together with scaffold tube, steel frame and ringlock systems. There are different types for etal steel planks, with hooks or without hooks. 





QUALITY CONTROL
We have a strict quality system, the raw materials of each order will be tested before production, and a rolling mill test certificate will be provided to customers.
1)Before Shipping ,Our professional Inspectors Will Check The Pipe's Diameter ,Thickness ,Length, Chemical Composition, Mechanical Properties,Zinc Coating etc, Everything is Ok, Then Will Shipping and Supply a MTC With Full Information .
2) Support The Third Party Inspection ,SGS, BV and Others.

 

The product is mainly used in industries such as construction, light industry, automobiles, agriculture, animal husbandry, fishery, and commerce.
The construction industry is mainly used for manufacturing anti-corrosion industrial and civil building roof panels, roof grilles, etc.
Light industry uses it to manufacture home appliance shells, civilian chimneys, kitchen utensils, etc.
The automotive industry is mainly used for manufacturing corrosion-resistant components of automobiles.
Agriculture and animal husbandry are mainly used for food storage and transportation, as well as tools for freezing and processing meat and aquatic products.


 

FAQ

 

1. What is a Steel Acrow Prop?

A Steel Acrow Prop is a versatile, telescopic, load-bearing support used in construction for temporary propping and shoring. It consists of two steel tubes (one sliding inside the other) with a manual adjustment mechanism, allowing it to be extended to various heights. It is the most common type of temporary vertical support on construction sites worldwide.

2. What is it used for?

• Formwork Support: Supporting soffits (the underside) of in-situ concrete slabs, beams, and lintels during casting and curing.

• Temporary Shoring: Propping up existing structures during alterations, such as removing a load-bearing wall ("needling and propping").

• Heavy Load Support: Bracing temporary structures, supporting heavy machinery, or stabilizing scaffolding.

• Roof Work: Providing temporary support for roof structures during repair or renovation.

3. What are its main components?

• Outer Tube (Female): The larger, fixed tube with a series of pin holes.

• Inner Tube (Male): The smaller tube that slides inside the outer tube. It has a welded top fork or U-head to support timbers or beams.

• Adjustment Pin & Chain: A steel pin that is inserted through aligned holes in both tubes to lock the height. A chain prevents the pin from being lost.

• Base Plate: A welded steel plate at the bottom of the outer tube to distribute the load.

• Screw Jack (on some models): A threaded extension at the top (on the inner tube) or bottom for fine adjustment (±150mm).

4. What are the standard sizes/capacities?

Props are categorized by their closed length and maximum extended length.

• Common Sizes:

  • Light Duty: 0.8m to 1.8m extended. Safe Working Load (SWL) ~20 kN (2 tons).

  • General Purpose: 1.8m to 3.4m extended. SWL ~35 kN (3.5 tons). (Most common on residential sites).

  • Heavy Duty/Stongboy: 3.0m to 4.5m+ extended. SWL ~45-60 kN (4.5-6 tons).

• Critical Rule: NEVER extend a prop beyond its marked maximum working length. Capacity drastically reduces as extension increases.

5. How do you calculate the load and spacing?

This is always engineer-designed. Calculations consider:

• Total Dead Load: Weight of wet concrete, formwork, and timbers.

• Live Load: Weight of workers, equipment, and impact.

• Prop Capacity: Based on its size, extension, and class.

• Safety Factor: Typically 2.0 or higher.

• Spacing (Centers): Determined by dividing the prop's capacity by the total load per square meter. A common residential slab load might require props every 1.2m x 1.2m.

6. How is it installed and used safely?

1. Inspect: Check for bends, cracks, damaged welds, or loose/missing pins before use.

2. Position: Place on a firm, level base. Use a sole plate (timber plank) on soil or soft surfaces to prevent sinking.

3. Extend: Pull the inner tube up to the approximate height. Insert the pin through the nearest hole below the desired height.

4. Fine-Tune: Use the screw jack (if fitted) to achieve exact height and apply slight pre-load.

5. Align: Ensure the prop is vertical/plumb. Use braces if height exceeds 2.5x the minimum base width.

6. Head & Base: The top fork must fully support the timber/beam ("strongboy"), and the base plate must sit flat.

7. Striking (Removal): Loosen screw jack first to release load. Remove in a controlled sequence as per the method statement.

7. What are the most critical safety hazards?

• Over-Extension: Using a prop beyond its safe working length.

• Unstable Base: Sinking, slipping, or kicking out on an uneven surface.

• Eccentric Loading: The load is not centered over the prop, causing buckling.

• Corrosion/Damage: Using a badly rusted, bent, or modified prop.

• Unbraced Long Props: Props over ~2m high without lateral bracing.

• Unplanned Striking: Removing props before concrete has reached its specified strength.

8. How do you inspect and maintain them?

• Pre-Use & Weekly Inspection: Look for:

  • Structural: Bends, dents, or cracks in the tubes.

  • Welds: Cracks in welds (base plate, top fork).

  • Corrosion: Severe rust that reduces wall thickness, especially at the base.

  • Mechanical: Missing, bent, or worn pins; seized screw threads.

• Maintenance: Keep clean, store undercover, and lightly oil screw threads. Never weld or straighten a damaged prop-scrap it.

9. What regulations and standards apply?

• UK/EU: Must comply with BS EN 1065:1999 (Adjustable telescopic steel props). Should be CE/UKCA marked.

• Australia/NZ: AS/NZS 1577 for scaffolding and props.

• General Safety: Site use falls under Work at Height regulations (e.g., UK's WAHR 2005) and requires a risk assessment and method statement.

• Load Testing: Props are factory-tested to 1.5 x SWL.

10. Can they be rented?

Yes, they are primarily rented equipment from plant hire or scaffolding companies. Renting ensures you get regularly inspected, certified equipment and avoids storage/maintenance costs.

11. What is the difference between an Acrow Prop and a 'Strongboy'?

• Acrow Prop: The standard telescopic prop with a fork head.

• Strongboy (or Needle Bracket): A specific accessory-a short, heavy-duty prop with a horizontal lip. It is used in needling operations to support a masonry wall from the side, just above an opening being formed.

12. What are the alternatives?

• Aluminum Props: Lighter, corrosion-resistant, but typically more expensive.

• System Shoring (e.g., Cuplok, Ringlock): Modular frames for large slab areas.

• Hydraulic Shoring: For heavy civil engineering, allows for easier striking.

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