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Granite Lapping Plates
We are one of the leading suppliers of Granite Lapping plates that are used for accurate hand lapping of material such as nylon, plastics, ceramics and other non ferrous material. These are available in Square and Rectangular sizes and are made up of black granite. Each of the plates has 3 mm wide and 3 mm deep serrations on working surface equally spaced at 25 mm and have lapped surface finish. Our Granite lapping plates are supplied with calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi.
Standard Size and accuracy of Luthra Granite Lapping Plates as per IS :7327-2003, Grade 1
Square / Rectangular
mm |
Accuracy
um |
| 150 x 100 |
3 |
| 250 x 150 |
3.5 |
| 300 x 200 |
3.5 |
| 300 x 300 |
4 |
| 400 x 400 |
4.5 |
| 400 x 630 |
5 |
| 630 x 630 |
5 |
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