Grade rated plates
| Length x Width | Thickness | Hole Diameter | Net weight black | Net weight galv. |
|---|---|---|---|---|
| 300 x 278mm 12 x 11inch | 1.9 mm | 50 mm = 2 inch | 2.87 lbs | 2.95 lbs |
| 400 x 278mm 15.75 x 11inch | 1.9 mm | 50 mm = 2 inch | 3.73 lbs | 3.83 lbs |
| Product Code(s) | |
|---|---|
| 12x12" black | BUTT300S USA |
| 12x12" galv. | BUTT300GS USA |
| 12x16" black | BUTT400SWA |
| 12x16" galv. | BUTT400GS |
The butterfly plate is a light-weight plate with a large surface area. It is used as an intermediate plate to increase the surface coverage of a bolt.
- DSI Underground Butterfly plates feature both longitudinal and transverse V-shaped deformations for added strength and greater ability to conform to irregularities in the rock surface.
- The deformed design renders a greater strength, placing the perimeter of the Butterfly Plate in tension.
- User friendly rounded corners.
- Can be used with both flat and domed plates (up to 150mm, 6 in2)
- Butterfly plates are can be placed directly to the rock surface or used with Welded Steel Mesh.
- Butterfly plates are supplied with slots for supporting of light service lines.
- Corrosion protection may be provided by hot-dip galvanizing the finished plate or by using pre-galvanized material.
