GBC MCA3 / MCA30 — Blades & Consumables

Selection here runs on two axes, and both change the order code. The first is material group: carbon steel blades run on carbon and low-alloy pipe, while the stainless steel group covers stainless work. The stainless side holds two versions — TiCN-coated blades lower sticking at the cutting edge and raise metres per blade, and the Inox series is the second option. The second axis is angle. Single-angle outside bevelling blades come at 30°, 37.5° and 45°, which pair into 60°, 75° and 90° V grooves respectively. The compound blades do something different: 10°+30° and 10°+37.5° leave a narrow 10° land at the root and open the main angle above it, so the root stays accessible while weld volume is held down. On heavy-wall pipe that geometry gives a two-stage preparation from a single blade. The family also carries plain cutting and cut-plus-bevel blades; the cutting group works in front and rear approach up to 40 mm wall, and the cut-plus-bevel blades combine both operations in one pass at 37.5° and 45°. Three facts settle the order: material group, angle, and approach direction.