*Please note that the mark of the Web page is different.

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| 1 : | Type – Dependent on the range and shape, a symbol from Table 1 appears here. |
| 2,3,4 : | Job Number – The 3-digit sequential job number (001, 002, 003, etc.) assigned to the product appears here. |
| 5,6 : | Diameter – Expressed in centimeters as a 2-digit number. |
| (For example, if the nominal diameter is 57 mm, it will be rounded off to 6 mm and will appear here as 06. For oval shape products, the length appears here.) | |
| 7 : | Impedance (Symbol) – A symbol from Table 2 appears here. |
| 8 : | Specification Number – The sequential specification number (0, 1, 2, etc.) assigned to the product appears here. |
