Walraven Concrete Screws
Walraven concrete screws offer a high-performance fixing solution for securing components directly into concrete, masonry, and solid substrates. Designed for rapid installation, clean anchoring, and exceptional load performance, the Walraven range provides professional installers with a safer, faster, and more reliable alternative to traditional expansion anchors.
At Pipestock, we supply a full selection of Walraven concrete screws including pan head, hex head, male thread, and female thread options, giving you complete flexibility for mechanical, electrical, and structural applications.
What Are Concrete Screws & How Do They Work?
Concrete screws (also known as concrete anchors, concrete bolts or screw anchors) are designed to provide robust, mechanical interlock into the base material. The screw is driven into a pre-drilled hole, and its specially-cut saw-tooth threads cut into the substrate, forming an anchor without additional sleeves or resin. Because the load is carried by the mechanical interlock between screw and base material, these anchors can be used closer to edges or in tighter spacing conditions than many traditional expansion anchors. Many concrete screws are suitable for both cracked and non-cracked concrete conditions and in some cases, for dynamic loading (seismic, fatigue, shock,) making them versatile for building services and structural applications.
When to Use Concrete Screws
These fixings are especially suitable for:
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Building services installations: Pipe support bracketry, channel rails, hanger systems.
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Frameworks: For HVAC, plant-room, cable tray and conduit brackets.
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Light to medium structural mounting: Where direct fixing into concrete or masonry is required.
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Installation scenarios: Where speed, reliability and clean removal or adjustment are desirable.
Cracked & Non-Cracked Concrete: What is the Difference?
When selecting the correct anchor for a job, it’s important to understand whether you’re working with cracked or non-cracked concrete.
Non-cracked concrete: Refers to areas of a structure that are primarily under compressive load, such as columns or load-bearing walls. Because these elements are compressed rather than stretched, the likelihood of cracking after installation is generally low.
Cracked concrete: Occurs in areas subject to tensile load, for example the underside of floor slabs or ceiling sections. In these zones, the concrete may develop small cracks over time, even when reinforced. These cracks are often extremely narrow (around 0.3 mm) and may not be visible, yet they can significantly affect the performance and load capacity of an anchor.
For this reason, when fixing into cracked concrete, it is essential to use anchors specifically tested and approved for cracked-concrete applications to ensure safety and reliability. In cases where it is difficult or impossible to confirm that the concrete is non-cracked and will remain non-cracked throughout the service life of an anchor, the rule of thumb is to consider the concrete as cracked.
Walraven Concrete Screw Range
- A versatile internal-thread anchor designed for applications requiring a threaded connection point. Ideal for suspending threaded rod, supporting pipe clamps, or mounting brackets directly to concrete.
- Features a wide pan head for secure surface mounting without additional washers. Commonly used for fixing conduit clips, wall plates, timber battens, cable management products, and light steelwork.
- A robust, high-torque fixing suitable for heavy-duty anchoring. The hex head design delivers excellent grip and stability when installing brackets, metal channels, or larger components.
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Provides an external threaded stud once installed, allowing immediate attachment of pipe hangers, clamps, and supports. Perfect for overhead installations and mounting Walraven fixings.
Key Features & Benefits
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Fast installation: Drive directly into pre-drilled holes, no plugs or anchors required.
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High load capacity: Engineered thread geometry provides a strong, reliable hold in concrete and masonry.
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Removable & reusable: Ideal for temporary fixings or adjustments during installation.
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Versatile designs: Pan head, hex head, male thread, and female thread options cover all onsite requirements.
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Reduced edge and spacing distances: Safer and more flexible positioning compared to expansion anchors.
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Compatibility with Walraven systems: Perfect for use with Walraven pipe clips, clamps, RapidRail profiles, and suspension components.
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Corrosion-resistant coatings: Long-lasting durability in demanding environments.
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
