BEVELLING BITS FOR CARBON STEEL

Two numbers decide a weld preparation: the angle and the depth. On the Beveltools range both are fixed by which head you fit — the bevel comes out at that angle and that depth, and the operator’s feed rate does not change it. The carbon steel range covers 15°, 22.5°, 30°, 37.5°, 45°, 52.5° and 60° in bevel heads, and R1 through R8 in radius heads. Depth follows the machine: Mini Mite™ cuts 4 mm, Bevel Mite® 6 and 12 mm, Bevel Mate® 8, 10 and 12 mm. Choosing is straightforward. A single-sided V preparation usually sits between 30° and 37.5°; 45° opens up access to the root; narrow angles such as 15° and 22.5° cut the volume to be filled on thick wall, and with it the weld metal consumed. Radius heads are not weld preparation at all — they break and round the edge for paint adhesion and handling, and the R figure states the rounding the head produces, R1 being the sharpest and R8 the widest. The L and LR prefixes in the code mark Lite bodies, offered at the same angle and depth values. The whole range is defined for carbon steel; stainless work calls for the separate inox head range.