Common Types of Adjustable Scaffolding Props
|
ITEMS |
PICTURE |
ADJUST HEIGHT |
INNER&OUTTER TUBE |
TUBE THICK |
SURFACE |
|
LIGHT DUTY PROP |
Size 0 |
1.05-1.8m |
40/48mm |
1.5-2.5mm |
PRE-GI |
|
Size 1 |
1.76-3.13m |
40/48mm |
1.5-2.5mm |
||
|
Size 2 |
1.98-3.36m |
40/48mm |
1.5-2.5mm |
||
|
Size 3 |
2.59-3.97m |
40/48mm |
1.5-2.5mm |
||
|
Size 4 |
3.20-4.82m |
40/48mm |
1.5-2.5mm |
||
|
LIGHT DUTY PROP |
Size 0 |
1.05-1.8m |
48/56mm |
1.5-2.5mm |
|
|
Size 1 |
1.76-3.13m |
48/56mm |
1.5-2.5mm |
||
|
Size 2 |
1.98-3.36m |
48/56mm |
1.5-2.5mm |
||
|
Size 3 |
2.59-3.97m |
48/56mm |
1.5-2.5mm |
||
|
Size 4 |
3.20-4.82m |
48/56mm |
1.5-2.5mm |
||
|
HEAVY DUTY PROP |
Size 0 |
1.05-1.8m |
48/60mm |
1.5-4.0mm |
|
|
Size 1 |
1.76-3.13m |
48/60mm |
1.5-4.0mm |
||
|
Size 2 |
1.98-3.36m |
48/60mm |
1.5-4.0mm |
||
|
Size 3 |
2.59-3.97m |
48/60mm |
1.5-4.0mm |
||
|
Size 4 |
3.20-4.82m |
48/60mm |
1.5-4.0mm |
Application
Whether you are a building materials distributor or a construction contractor, we provide customized solutions tailored to your project requirements. This includes, but is not limited to, a wide range of specifications and dimensions, along with engineering support and installation services.
Concrete Pouring and Formwork Support
When pouring fresh concrete for slabs, roofs, or floors, acrow props are used to support formwork structures until the concrete achieves sufficient strength. This prevents structural sagging, deformation, or cracking, ensuring construction quality and structural stability.
House Renovation and Structural Alterations
When demolishing walls, creating door/window openings, or modifying load-bearing structures. Steel acrow props can be installed to share loads and maintain the stability of load-bearing walls and ceilings.
Installation of Load-Bearing Beams and Lintels
During the installation of beams, lintels, or joists, acrow props provide temporary support. They effectively bridge structural gaps, preventing displacement or collapse to ensure construction safety.
Demolition and Renovation Projects
In building demolition or large-scale renovation projects, when portions of the structure must remain intact. Acrow props help stabilize the remaining structure, reducing construction risks and preventing accidental collapse.
Wall Reinforcement
During construction or renovation, steel acrow props provide temporary reinforcement for walls or localized structures, enhancing construction safety.
Scaffolding and Auxiliary Construction Systems
Mini acrow props serve as components within scaffolding systems, supporting work platforms or auxiliary structures to increase construction flexibility.
How to Install Acrow Props
Step 1: Wear protective gloves and a hard hat. Clear the work area and keep others at a safe distance.
Step 2: Position the prop, extend the inner tube to the required height, and secure it with the pin.
Step 3: Rotate the collar to fine-tune the height until the prop is firmly tightened in place.
Installation is complete in three simple steps
Factory Ability
Irontrix is a leading manufacturing company based in China, focused on the production of high-quality size 2 acrow props. The production process covers steps from cutting, welding,punching, surface treatment, assembly, and final inspections, which ensure each product meets the international standards of quality.

Strict Inspection

Certificate and Loading Test
Our loading testing are based on OSHA, EN, BS, and ANSI laws, All the Size 0 Acrow props can issue certification sheet before delivery, which ensure the dependability and safety of your orders.

FAQ
Q1: Can you provide custom lengths and sizes?
A: Yes, we offer full customization:
Adjustable range: 800mm – 5500mm (or as per your drawing)
Tube combinations: 40/48mm, 48/56mm, 48/60mm, 60/76mm
Wall thickness: 1.7mm – 3.5mm
Custom threads and pin holes
MOQ: 500pcs
Q2: How do I choose the right prop size for my project?
A: Selection depends on:
Height requirement: Choose size with closed height < your clearance, extended height > your need
Load calculation: Total load (concrete + formwork + workers) ÷ number of props = load per prop
Safety factor: Apply 1.5–2.0 safety factor to working load limits
Foundation condition: Ensure base plates suit ground conditions
Example: For a 3.0m ceiling with 5 ton load using 4 props → 1.25 ton/prop → Select Size 2 (39.5 kN capacity at 1.9m)
Q3: Why does load capacity decrease with height extension?
A: This is due to slenderness ratio (length vs. cross-section):
Longer props act more like slender columns
Increased risk of buckling under compression
Euler's buckling formula governs this relationship
Q4: What are the tube diameter and thickness specifications?
A: Common specifications include:
|
Component |
Outer Diameter |
Wall Thickness |
|
Inner tube |
40mm / 48.3mm |
1.7mm – 3.2mm |
|
Outer tube |
48mm / 56mm / 60mm / 76mm |
1.7mm – 3.2mm |
Material: High-strength steel Q235, Q345, or Q355
Standard compliance: EN1065, BS4074, BS4360
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