GBC PIPE 4 — Blades & Consumables

What decides a saw blade is not pipe diameter but wall thickness, because that sets how many teeth are in the cut at any moment — and that number governs both cut quality and blade life. The GBC PIPE 4 blades are therefore split into two ranges. The 1–3.5 mm blade is for thin wall: at that thickness a finer pitch stops the wall dropping into the gullet and chattering. The 3.5–6.5 mm blade is for medium wall, where a larger gullet clears the chip a thicker section produces and keeps the tooth from overloading. Going outside the range causes trouble in both directions: running the thin-wall blade on a 6 mm wall overloads the teeth, while running the thick-wall blade on a 1.5 mm wall lets teeth snag and damages the edge. Both blades are made for stainless, so the sticking and work-hardening behaviour that shows up when a carbon-steel blade meets stainless pipe has been designed out. Pick the right range and the cut face stays fit to weld, with less follow-up grinding.