For the standard version we are using corrosion- and acid-resistant stainless steel V3M extra. To avoid bending of the pins they are standard hardened up to 60 - 62 HRC.
For special applications such as heat setting as well as the use of strong acids and bases we recommend V2Aand V4A material.
All our needles are also available in the cheap electric furnace steel execution with a high carbon conent which, however, increases the risk of a quicker corrosion.
For the standard version we use gill pins for pin strips, because they have a perfect relation of grinding length to the cylindrical part of the needle. The shape
of these needles was optimized to facilitate that theygently glide into the fabric without damaging the individual fibre.
We, of course, also manufacture according to customers` requirements.