4.1 The products defined in this European Standard are designated, by the following symbols, in the order in which they are indicated: a) the name of the product (for example: sheet, coil); b) the number of this European Standard (EN 10 142); c) the complete designation of the type of steel (for example Fe P03 G, see table 1); NOTE- The designation shown in Table 1 corresponds to that defined in EU 27 of 1974. This Euronorm is in the process of review and subsequent transformation into a European standard (see standard EN 10 027/1) and it is planned to modify the designations of the types and grades of steels defined in standard EN 10 142. d) a letter, indicative of the type of coating, according to the following code: Z: zinc coating ZF: iron-zinc alloy coating e) a number indicating the mass coating (example: 275 = 275 g/m2 for both sides, see table 4); f) a letter indicating the appearance of the coating (N, M or R, see tables 2 and 3); g) letter indicating the degree of surface finish (A, B or C, see tables 2 and 3); h) letter indicative of the surface treatment (C, O, CO or U, see 5.5) Examples 1) Fe P03 G steel coil, coated with zinc (Z), with a coating mass of 275 g/m2 (275), with normal star (N) surface finish A, chemical passivation (C). Designation: Coil EN 10 142 - Fe P03 G Z275 NA - C 2) Cut sheet of steel Fe P05 G, coated with an iron-zinc alloy (ZF) with a coating mass of 100 g/m2 (100) with normal appearance (R), surface finish B, surface treatment: oiled (O) Designation: Cut sheet EN 10 142 - Fe P05 G ZF100 RB - 0. 4.2 If necessary, they can be added, with all letters , to the designation defined in section 4.1, complementary indications relating to the supply conditions (see chapter 12).