CONSTRUCTION FIXINGS

industry and implemented the same standards and quality in the steel construction field. “Our automotive industry know-how, especially in the field of friction coefficient tests, made it possible to develop a lubricating coating on the nut that provides high repeatability of the clamping force rate. It is thanks to the refined nut coating that we know that our sets will meet the requirements of assembly using the combined K1 and modified methods,” explains Koelner Rawlplug. “This allows our customers flexibility of choosing the preferred method of assembly. We deliberately narrowed down the K-factor gates to always be ready to prepare an order dedicated to the K2 controlled moment method. In the case of the most popular K1 method, this solution gives high repeatability of the results obtained.”

Another area in which relevant experience is essential is in obtaining high strength classes in the production of fasteners. “We have used our achievements in the production of high strength fasteners for the automotive industry and ensured the heat treatment process is carried out in our modern continuous and chamber furnaces,” points out Koelner Rawlplug. “Additionally, we closely monitor every batch of steel delivered to our factory in order to ensure high repeatability of the mechanical parameters of the bolts. Our bolts are also hot dip galvanised without the use of acid, thanks to which we have reduced the risk of hydrogen embrittlement generated from the production process. We have implemented our own original method of testing the susceptibility of high strength bolts to hydrogen embrittlement and regularly check our HV sets this way. “

To complement its offer, Koelner Rawlplug is also able to provide active technical support in the challenges related to the design and assembly of steel structures. The company can guarantee the assistance of its engineers in case of any quality concerns. Well equipped in-house laboratories also make it possible to confirm process and product compliance, as well as to carry out advanced research and development work.

“Exhibiting at the Fastener Fair Global show in Stuttgart will enable us to showcase our HV bolts, as well as present the full range of possibilities of our Łańcut factory,” states Koelner Rawlplug. “With so many new investments and modernisation projects going on, it is hard to keep up with everything. That is why visitors need to visit our stand to make sure they do not miss out on any exciting developments.” www.klfs.pl

ƒ Suitable for preloading constructions according to EN 1090-2; EN 14399:

- combined method – K1: 0,10 ≤ k ≤ 0,16*

- torque method – K2: 0,10 ≤ km≤0,16; Vk≤0,06*

*possibility to meet both in same product

- modified method (DASt 024) (fitted K-factor)

ƒ Guaranteed property grade 10.9/10

ƒ Full control over K-factor, reliable and repeatable assembly (in house testing)

ƒ Solution for wind energy application on sea:

- Hot dip galvanization process eliminating the risk of hydrogen embrittlement

- Special MoS2 formula – more resistant to weather conditions

- Higher fatigue resistance due to lack of ferrite delta

ƒ Customized coating system depending on application

ƒ Full component identification and traceability

ƒ Excellent thread fit and durability www.klfs.pl lfs@rawlplug.com HV SOLUTION FOR SAFE CONNECTIONS Available for sale from the warehouse in the M12 – M36 range