Difference Between Tube and Clamp Scaffolding Couplers

What is Scaffolding?

Scaffolding is a temporary structure used in construction, maintenance, and repair works to impart support and access to workers at different heights. Scaffolding Couplers are the components that hold the tubes together to form the scaffold.

There are two main types of scaffold couplers, Tube and Clamp.

Tube Couplers

Tube Couplers are cylindrical sleeves that connect two scaffold tubes end-to-end to form a joint. Aluminium or steel are two predominantly used metals for tube couplers. Tube couplers have different sizes to fit individual diameter tubes.

How the Tube Couplers Work?

After inserting the tubes into the coupler, a locking pin or set screw secures the tubes in place. The coupler’s design allows for minute movement between the tubes. It is helpful in situations involving the effect of wind or other environmental factors on scaffolds.

Clamp Couplers

Clamp Couplers, on the other hand, are plate-like devices attached to the outside of the scaffold tubes to connect them. A bolt or wing nut tightens the connection between the scaffold tube and the clamp.

They are ideal choices in situations requiring a more rigid connection, such as building diagonal bracing or creating a base plate for a scaffold tower.

Looking for scaffolding coupler manufacturers in Ludhiana? Murari Engineering Works is the best choice you’ve got!

Differences Between Tube and Clamp Couplers

There are a few noticeable differences between tube and clamp couplers.


One of the main differences is the strength of the connection. Tube couplers are less rigid than clamp couplers, making them more suitable for situations reckoning with environmental forces like wind. Clamp couplers, as said, proffer a more rigid connection like joining the bridge posts in the sidewalk.

Ease of Use

It is comparatively easier to insert and extract the tube from the coupler using a locking pin or set screw. Clamp couplers require a tool to tighten the bolt or wing nut, which can be time-consuming and necessitate extra manual labour.


In terms of cost, tube couplers are generally less expensive than clamp couplers. Tube couplers have an uncomplicated design and fewer components, making them economical. While the clamp couplers are on the costlier side since they require additional components, such as bolts and wing nuts.

Concluding Thoughts

In conclusion, both tube and clamp couplers have advantages and disadvantages, and the choice between the two will depend on the specific requirements of the scaffold project. Tube couplers may be the best option when a more flexible connection is required.

In situations involving a rigid connection, clamp couplers may be the ideal choice. Ultimately, the choice between the two will depend on several factors, including the type of scaffold project, the environment in which the scaffold will be used, and the budget for the project.

Murari Engineering Works is one of the leading forging units in Punjab, since 1959. We’ve served many industries with forged components requirements, including the automobile industry and scaffolding industries. Our diligent workers have the perfect solution for all your forging component requirements.


What are Scaffolding Couplers- Types, Characteristics, and Precautions

Scaffolding couplers, AKA scaffolding clamps, join two steel pipe fasteners. These are called scaffolding joints. The scaffolding couples are mounted on scaffolding pipes, and they help to hold the struts in place.

Scaffolding couplers also support the interior to internal struts and internal to external struts. They come in handy during the proper installation of the scaffoldings.

They overcome the defects of the scaffolding structures like initial folds or bending. They further help in stabilising the scaffold structure.

Scaffold couplers are available in different sizes for different materials and pipe widths.

Types of Scaffolding Couplers

There are three main types of scaffolding couplers- right angle, swivel coupler, and sleeve coupler. The right-angle coupler is the most used of the three.

  • Right Angle Coupler

It is also called a fixed coupler. The right-angle coupler joins the scaffold tubes at 90 degrees. They join the ledger and the standard steel pipes.

It is further divided into two types- pressed steel type and drop forged type.

High steel plates press the double coupler to form a pressed steel type coupler.

The drop-forged type involves the forging of high-strength steel round bars. It includes elements of covers, bases, bolts, and nuts.

The drop-forged type is further divided into two categories i.e. quick thread and normal thread. Quick thread is preferred more because of enhanced strength due to wider screws.

  • Swivel Coupler

Swivel coupler AKA universal coupler is implied in diagonal bracing. It enhances the rigidity of the scaffold structure.

It can connect the scaffold structure at any angle. It is highly durable, and its robust mounting provides it the adjustability to fit towers of any size.

  • Sleeve Coupler

It provides an end-to-end connection to the scaffold coupler. A sleeve coupler is often called a box clamp. It is resistant to bending.

It is hot dip galvanised, which increases the life of sleeve couplers. It is suitable for all weather conditions, owing to its strong strength.

With sleeve couplers, scaffold tubes can be connected vertically, horizontally, or diagonally.

Characteristics of Couplers

  • Iron is utilised to curate scaffolding couplers. It adds toughness and strength to the coupler. Cast iron’s inability to fracture eliminates any possible accident hazards.
  • Scaffolding couplers offer a large fitting area that provides a ground for the surface bounding of steel pipe and fastener. Thus, improving the overall mechanical properties of the structure.
  • Using galvanised iron acts as a double anti-corrosion layer. This further enhances the life of couplers and the structure.
  • Scaffolding structures are light in weight. Thus, providing a fast assembly. This in return, requires less labour.

Precautions While Making Scaffold Structures

  • Proper Safety Equipments

It is crucial to employ personal protective equipment (PPE) while working on a scaffold structure. Not using a PPE kit, especially in construction industries, leads to accident hazards.

Wearing hard material helmets prevents catastrophic injuries. Along with it, the workers ought to wear non-slip footwear.

  • Training

The workers need to have proper training in the construction and operation of the scaffold structures.

The appropriate technique is required to climb the scaffold structure. It is tricky to assemble and disassemble the said structure.

It is also beneficial to know the load capacity of scaffold couplers.

  • Maintenance

There should be a proper place for storing the scaffold structure. Additionally, debris should be removed before storage.

The scaffold structure should be clean at all times. This prevents rust. People well versed with safety regulations need to make regular inspections.

Summing Up

Make sure to be properly educated before working on the scaffold structure. Otherwise, it can pose a threat to life.

Murari Engineering offers the best deals on scaffolding couplers. We are the leading producers of scaffolding structures in Punjab. We do not compromise on quality, and our products go through a quality check before coming to the market.