Precise Cuts for Construction and Insulation Materials
Choosing the right band saw blade has a decisive impact on cutting quality, blade life, and overall efficiency. The ARNTZ STONE-LINE band saw blades – 623 STONE-LINE S and 621 STONE-LINE RT – cover the full range from soft to hard construction materials, delivering clean, smooth results with maximum running stability.
623 STONE-LINE S –
The reliable solution for soft construction materials
Ideal for aerated concrete, insulation boards and insulating materials

The STONE-LINE S has been specifically developed for softer, porous, and fibrous construction materials.
Applications
- Aerated concrete / gas concrete
- Insulation boards
- Insulating materials
- Gypsum boards and gypsum fiber boards
Performance features
- Set carbide band saw blade with wide clearance → prevents blade jamming
- Consistently clean cutting surfaces
- High process stability
Dimensions
- 27 × 0.90 mm
- Tooth pitch: 3

621 STONE-LINE RT – The expert for hard and abrasive construction materials
Perfect for bricks, Poroton & abrasive materials

The universal STONE-LINE RT delivers maximum precision on masonry band saw machines with both small and large cutting heights.
Applications
- Aerated or gas concrete
- Hollow bricks
- Poroton / porous bricks
- Abrasive construction materials
Performance features
- Variable tooth pitch → extremely smooth, low-vibration cutting
- Positive rake angle → easier tooth engagement and lower cutting force
- Precision ground tooth geometry → long blade life in hard materials
- Clean, smooth cutting quality for professional applications
Dimensions
- 27 × 0.90 mm
- 34 × 1.10 mm
- Tooth pitch: 2/3

Conclusion: The best saw band for every construction material
- 623 STONE-LINE S → softer construction materials, maximum clearance performance
- 621 STONE-LINE RT → hard, abrasive materials, smooth low-vibration cutting
Both variants stand for durability, precision, and outstanding quality — developed for demanding professionals in the construction and manufacturing industries.