Key Questions to Ask When Ordering Adjustable Scaffolding Steel Props

Acrow props are adjustable steel shoring posts to support loads during construction or repair work. They are typically used to support floors, ceilings, and walls. Acrow props have two main components: inner and outer tubes. The inner tube is threaded, and the outer tube has a hole that the inner tube fits through. The inner tube is raised and lowered by turning a screw handle at the top of the prop.

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Acrow props are first placed in position, and the height is adjusted to support the load. The props are then secured in place using wedges or base plates. Acrow props can be used individually or in groups to support heavier loads.

Acrow props work by transferring the weight of the load to the ground, distributing the weight evenly. They can support a wide range of weights. Acrow props are also adjustable, which makes them versatile and easy to use.

Here are some examples of Acrow prop use:

• To support a floor while it is being poured
• To keep a wall while it is being built
• To save a ceiling while it is being repaired
• To save a load-bearing wall while a doorway is being cut through it
• To support heavy machinery or equipment

Adjustable Steel Props

Adjustable Steel Prop Parts and Components

Adjustable steel props are temporary steel vertical support posts composed of inner tubes, outer tubes, prop sleeves, G pins, bottom and top plates, and prop nuts with handles. The raw materials of these components are all made of steel, including steel tubes, steel plates, and cast iron prop accessories.

1. Prop inner tubes are smaller-diameter tubes compared to the outer tube; they typically have holes that are inserted into the outer tube during construction and propping.
2. Outer tubes are bigger in diameter than the inner tubes.  They are integrated with the prop sleeve.
3. Prop sleeves are the same diameter as the outer tube with screw treads.  They usually have slots to receive the prop G pins and fix the inner tube at a required height.
4. Prop G pins are G-shaped, solid bars. They function as the locking pins to secure the adjustable steel props at a required height.
5. Prop nuts are attached to the prop sleeves, which feature inner threads and nut handles. They can be turned up and down on the prop sleeve by hand for slight height adjustment, allowing for precise height settings during construction.
6. Prop bottom plates are welded on the outer tubes. They are the feet of the steel props that stand on the floor or ground.
7. Prop top plates are welded on the inner tubes. The top plates can be flat, U head, or fork head shapes designed for different construction purposes.

Recommended Reading: How G Pin Impacts Your Load of Props

Types of Adjustable Steel Props

There are many types of adjustable steel props. While the most commonly used adjustable steel props are steel shoring props, steel acrow props, and steel post-shore props.

1. Adjustable Steel Shoring Props: Steel props O.D. 40/48 and O.D. 48/56 Inner & Outer Tube with Prop Cups.
2. Adjustable Steel Acrow Props: Steel formwork props with OD48mm Inner Tube and OD60mm Outer Tube
3. Steel Post Shore Props (Heavy Duty): Steel props for the USA and Canada countries with OD63mm Inner Tube and OD76mm Outer Tube

Adjustable Shoring Props

Adjustable shoring props are steel props with handled prop cups. The diameter of the adjustable shoring props’ inner tubes and outer tubes:

1. OD40mm inner and OD48mm outer (light-duty shoring props)
2. OD48mm inner and OD56mm outer (heavy-duty shoring props)

Adjustable Shoring Props Specification

No.ItemInner TubeOuter TubeProp SleeveBase PlateProp Lock Pin1S40mmO.D 40mmO.D 48mmCup Sleeve120x120mmG Pin2S48mmO.D 48mmO.D 56mmCup Sleeve120x120mmG Pin

Adjustable Steel Acrow Props

Adjustable acrow props are the most popular types of steel props. It typically has prop sleeves and prop nuts. The inner tube diameter of the acrow props is OD48.3mm, and the outer tube diameter of the acrow props is OD60mm.

The adjustable scaffolding acrow props are typically in sizes: size 0#, size 1#, size 2#,  size 3#, and size 4#. See details in the following table.

However, we customize your acro prop size like 2-3.6m, 2.2-3.9m, 2.5-4m, and 2.2-4m, etc.

Adjustable Scaffolding Acrow Prop Size & SpecItemsMin HeightMax HeightSteel Wall ThicknessAcrow Prop Size 0#mmmm1.6-4.0mmAcrow Prop Size 1#mmmm1.6-4.0mmAcrow Prop Size 2#mmmm1.6-4.0mmAcrow Prop Size 3#mmmm1.6-4.0mmAcrow Prop Size 4#mmmm1.6-4.0mm

Recommended: Down Load Acrow Prop Technical Data

High Load Post Shores

Post shores are heavy-duty designed steel props for construction. The inner tube diameter of the post shores is OD2.5″, and the outer tube diameter of the post shores is 3″.

Technical Data: Post Shore Load Capacity E35

E35 Post Shore Load Technical Data ItemsAdjustable HeightUltimate  BearingTest HeightE35 Post Shore2-3.5m50.7 KN3.5m

E35 Post Shore Test Report (Tested By SGS)

Recommended: Download Post Shore Catalogues 

Benefits of Adjustable Steel Props

1. Versatility: Adapt to different heights and requirements, suitable for various applications.
2. Increased Productivity: The fast, tool-free height adjustment saves time and enhances productivity on-site.
3. Cost-Effective: Reduce the need for multiple props with a single adjustable prop that fits various tasks and condition
4. Longevity: High-quality materials and anti-corrosion coating ensure long-term use and reduce replacement costs.
5. Ease of Use: Quick setup and simple operation for increased efficiency in the field.

Technical Specifications:

1. Props Material: S235, S355 and 450 Steel Grades.
2. Height Adjustment Range:  2-3.6m, 2.2-4m, 2.2-3.9m and size 0# to 4#
3. Props Load Capacity: Light duty 10-20 KN, Medium duty: 20-30 KN, Heavy Duty: 30-60KN
4. Props Surface Treatment: Powder coating, E-galvanized, Pre-galvanized, Hot Dip Galvanized, Dip Painting. (Anti-corrosion)
5. Props Weight: 10 KG to 35 KG

Steel Propping System

The steel props are adjustable in height, making them versatile for various tasks, including stabilising temporary formwork for concrete, temporary propping for buildings, beams, structures, and other civil engineering projects. In the steel propping system, there are other parts to make the adjustable steel props more stable, take more load and be more convenient. Include prop tripods, forkhead and u head.

• Scaffold tripod: scaffold tripods make the steel props stand more stable
• Fixed Type of Forkhead: A fixed forkhead is inserted into the holes of the steel props to support formwork beams from four directions.
• U Head: U heads have a similar function to the forehead and take formwork beams from two directions in the propping system of the construction.

Wellmade manufactures all the above accessories of the propping system. Us now to get prices and details.  

Customise U-shaped Head and Forkhead Steel Props

Wellmade is an OEM manufacturer that designs and supplies steel props for formwork and shuttering companies. We have experience in customising steel props, not only in terms of size but also in design.  Integrated with the fork heads and U head, there are two customized steel props:

For more Adjustable Scaffolding Steel Propsinformation, please contact us. We will provide professional answers.

• Forkhead steel props
• U Head steel props
• Crosshead steel props

Forkhead steel props: Forkheads are welded on the inner tube of the steel props as the top part of the telescopic steel props. With the welded and fixed forkhead, no need for a separate fork head for your construction.

U-head steel props: The top of the steel props is not the top plate, but the U-shaped head. The U head can support formwork beams directly without needing extra U head inserts.

Cross Head steel props: Cross head at the top of the steel props; this design makes the steel props support more area of the slabs in construction

Forkhead, U-head and cross-head sizes are customized according to your formwork beam width and height.

EN Standard Adjustable Steel Props

Wellmade manufactures adjustable steel props according to EN standards. You can find A25 to A40, B25 to B55, C25 to C55, D25 to D55, E25 to E55 telescopic props here.

EN Standard Adjustable Steel Props Load ChartClassesHeight at Max ExtensionWeight Bearing
At Max HeightA252.5m20.4 KNA303.0m17.0 KNA353.5m14.6 KNA404.0m12.8 KNB252.5m27.2 KNB303.0m22.7 KNB353.5m19.4 KNB404.0m17.0 KNB454.5m15.1 KNB505.0m13.6 KNB555.5m12.4 KNC252.5m40.8 KNC303.0m34.0 KNC353.5m29.1 KNC404.0m25.5 KNC454.5m22.7 KNC505.0m20.4 KNC555.5m18.6 KND252.5m34.0 KND303.0m34.0 KND353.5m34.0 KND404.0m34.0 KND454.5m34.0 KND505.0m34.0 KND555.5m34.0 KNE252.5m51.0 KNE303.0m51.0 KNE353.5m51.0 KNE404.0m51.0 KNE454.5m51.0 KNE505.0m51.0 KNE555.5m51.0 KN

Telescopic Steel Props For Sale

Are you looking for high-quality steel props for your construction? Wellmade is the leading steel props manufacturer and supplier in China, and can bring you benefits on quality, price and professional services.

• Free Design: Design the steel props according to 1) Your steel props’ load capacity 2) Your steel props’ height
• ISO Quality Control System: Test the steel props from Raw Material to Welding and Load Capacity Test to Ensure Safety of Your Steel Props (check our ISO certificate)
• CE Certified Factory In China: We are the scaffolding factory certified in Europe according to ISO and EN 
• Provide You MTC and Test Report: We have our own test lab houses that can offer MTC and test reports against your props order (check the props test video on our YouTube)
• Customize Sizes for Your Construction: Wellmade is a famous OEM factory for many formwork and scaffold factories. We can customize your props according to your design and drawings.
• Complete Types of Steel Props Available : (Shoring Props, Adjustable Scaffolding Props and Post Shores)
• Reasonable Prices For You: Wellmade is the leading props manufacturer in China. With its large production capacity and automatic manufacturing lines, Wellmade brings you price benefits.
• 20 Years of Experience in steel props export to 62 global countries. Wellmade has produced and exported telescopic props to 62 countries globally in the past 20 years.
• Offer Product Warranties for your steel props order. You can get a product warranty from Wellmade for any orders after shipping.
• Fast Delivery: We offer 15-35 days delivery for your steel prop orders.

How to Buy Correct Steel Props For Your Construction?

• Ask your engineer about the maximum height of the telescopic props needed for your construction.
• Ask your engineer about the required load capacity or safety working load needed for the props in your construction.
• Decide on the surface of the prop needed: Coated or Galvanised?

Frequently Asked Questions (FAQ)

Q: How do I adjust the height of the steel prop?

Our adjustable steel props feature an easy-to-use mechanism for smooth height adjustment. Release the prop locking pin, insert a hole in the inner tube of the adjustable steel props, and then adjust the prop to your desired height.

Q: Can these props be used for outdoor construction?

Yes, our adjustable steel props are coated with a corrosion-resistant finish, making them ideal for indoor and outdoor construction projects.

Q: What is the maximum load capacity?

Our adjustable steel props can support up to 50KN (108 pounds), depending on the size and application.

Q: Are these props compliant with industry safety standards?

Yes, each prop is tested to meet the highest safety standards and is CE-certified in construction environments.

Q: What other names are used for adjustable steel props?

Adjustable steel props have other names: telescopic steel props, scaffolding props, formwork props, building props, shoring props, post shore, construction props,  acrow props, etc.

Q: What are the differences between aluminium props and steel props?

Compared to aluminium props, adjustable steel props are heavy-duty in load, and are cheaper in cost.  That is why adjustable steel props are one of the most popular construction props nowadays.However, adjustable aluminium props are made of aluminium. They are lighter in weight than the adjustable steel props. That is why adjustable aluminium props have the name Alulight props.

Q: What are the differences between hot dip galvanized and E-galvanized steel props?

E-galvanizing is also named zinc-plated or cold-galvanized. It is a type of galvanising in cold galvanizing fluid and works by electricity. The zinc thickness of the E-galvanized adjustable steel props is 8-12 micros. It is less zinc and less durable than the hot dip galvanizing treatment.Hot dip galvanized means putting the welded black adjustable steel props immersed into high-temperature zinc fluid pools to make the zinc firmed on the steel surface. The zinc thickness of the hot dip galvanized steel props is more than 60 micro average. Hot dip galvanized steel props are more durable and can last over 15 years without corrosion.Conclusion:Wellmade is a leading steel props manufacturer in China. We not only produce typical steel props for your civil engineering and construction. But also customizing design and OEM manufacturing, especially for your construction. Our Reasonable Price, Tested High-quality Products and Professional Services will bring significant benefits.

The company is the world’s best Scaffolding Drop Forged Coupler supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.