The Huffing slot bolt, also known as the Haffin groove T-bolt, is part of the comprehensive anchoring solutions provided by HALFEN GROUP. As a global leader in concrete anchoring systems and curtain wall connection technology, HALFEN has been delivering innovative and cost-effective solutions since its founding in 1929. With over 20,000 products in its range, the company has built a strong reputation in the construction industry. Notably, HALFEN is renowned for its embedded channel systems, which are widely used in high-speed rail projects across Germany, Japan, and France. This makes it an essential component in modern infrastructure.
Haffin Grooves are highly versatile fixtures that offer easy installation and adjustment. They are designed to prevent concrete from entering the channel by using foam or strip fillers. These grooves can be used for a wide range of applications, such as concrete curtain walls, precast slabs, pipeline supports, and masonry structures. Additionally, they are ideal for dynamic load-bearing scenarios like lifting rails or mechanical fixtures, where special hot-rolled channel steels are often employed.
Key quality features of Haffin channel steel include:
- High load capacity, up to 32kN or 128kN/m
- Small tolerances, as small as 5cm
- Easy to adjust during installation
- No noise or dust generated during installation
- Certified for both static and dynamic loads
- Excellent corrosion resistance through the use of stainless steel or hot-dip galvanized steel
These features make Haffin channel steel a must-have for architects, engineers, and contractors looking for reliable and efficient building solutions.
In addition, Haffin embedded parts are typically made from C-shaped steel or I-beams (78 * 25 * 5) using hot-rolling processes. The material used is Q235, and the surface is hot-dip galvanized with a zinc layer of at least 55 microns. For T-bolts, the material is 45# steel, forged and heat-treated. The tensile strength of the bolts and embedded parts is no less than 70kN, and the threads meet GB196 and GB197 standards. After galvanization, a passivation treatment is applied, with a zinc layer thickness of at least 15 microns after centrifugal processing.
The development of groove embedded parts has significantly improved the performance of large-scale exterior curtain walls. Their application allows for a more efficient and accurate construction process. With balanced force distribution, ease of installation, and flexibility in adjustment, these systems have become a key element in modern architectural design.
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