4.2 OptionsA number of options are specified in this European Standard and listed below. If the purchaser does notindicate his wish to implement any of these options, the supplier shall supply in accordance with the basicspecification of this European Standard (see 4.1):a) if thickness tolerance class B, C or D is required, include B, C or D in the order designation (see Clause 5and 6.1);b) if plate with untrimmed edges is required, include NK in the order designation (see 6.2.2);c) if plate with limited edge camber and out-of-squareness is required, include letter G in the orderdesignation and define the required maximum values for edge camber and out-of-squareness (see 7.1);d) if plate with special flatness tolerances is required, include the letter S in the order designation (see 7.2.1and Table 5);e) if plates with a nominal length l > 20 000 mm are required, the agreed tolerances on length are to bereported (see 6.3, Table 3);f) for plates with untrimmed edges, the chosen and agreed measuring points for the measurement of thethickness are to be reported (see 8.2).
5 Form of supplyPlate according to this European standard can be supplied: with thickness tolerances of class A, B, C or D (see 6.1); with trimmed or untrimmed edges (NK) (see 6.2.2); with normal or limited edge camber and out-of-squareness (G) (see 7.1); with normal (N) or special (S) flatness tolerances (see 7.2).6 Tolerances on dimensions6.1 Thickness6.1.1 Tolerances on thickness are given in Table 1. Plates may be supplied with either: class A: for minus thickness tolerances depending on the nominal thickness; class B: for a fixed minus tolerance of 0,3 mm; class C: for a fixed minus tolerance of 0,0 mm; class D: for symmetrical tolerances.