GBC
GBC TC40 / TC73 — Blades & Consumables
The carbon-steel blade set for the GBC TC40 and TC73: outside bevelling blades at 30° and 37.5°, plus a facing blade that squares the pipe end. Three lines, three operations.
Specifications
| Angle | 37.5 · 30 |
|---|---|
| Operation | External Bevelling · Facing |
| Material | Carbon Steel |
| Material | Carbon Steel |
| Fits Machine | GBC TC40 / TC73 |
Advantages
Face It First
A bevel cut on a crooked end comes out crooked. The facing blade squares the end, and the bevel is then cut on that surface.
Two Procedure Angles
30° and 37.5° give 60° and 75° V grooves when paired. The choice follows the groove angle written into the WPS.
Carbon Steel Group
All three lines are specified for carbon and low-alloy pipe, so the material group is settled before the order goes out.
A Three-Line Stock
Hold the facing blade permanently, hold the angle in the procedure permanently, and add the second angle only on a change.
Products
Features
- Blades specified for the GBC TC40 and TC73
- 30° outside bevel blade — a 60° V when two faces meet
- 37.5° outside bevel blade — a 75° V when two faces meet
- Facing blade squares the pipe end to the axis
- All three lines are for the carbon steel group
- Groove angle is chosen from the welding procedure, not preference
A shop running a TC40 or TC73 keeps three consumable lines, and each covers a different operation. The USC0277/01 facing blade squares the pipe end to the axis — the job done before any bevel, because a bevel cut on a crooked end comes out crooked too. On the bevelling side there are two angles. USC0293/01 cuts a 30° outside bevel; two such faces meeting give a 60° V, which limits weld volume while keeping the root open on heavy wall. USC0209/01 cuts 37.5°, giving a 75° V when paired, and more electrode access with it. The angle is not a preference: whatever groove angle the WPS specifies is the blade you order. All three lines are specified for the carbon steel group, so they run on carbon and low-alloy pipe; for stainless work these codes are not the right ones. The practical stocking rule is short — always hold the facing blade, hold the bevelling blade whose angle appears in the procedure, and add the second angle only when the procedure changes.
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