The VOELKEL HSS-E machine taps with white ring are especially suitable for stainless steel (INOX), long-chipping up to 1000 N/mm² and for chrome-nickel alloys.
An iron oxide film is created on the tool surface by heat treatment. This improves the adhesion of the coolant and as a result helps to prevent cold welding of the chip to the tool surface.
VOELKEL Thread-cutting tools
V-COIL Thread Repair System