| 摘要 |
A flooring panel or wall panel (20) is provided with a tongue (1) and a groove (2) each comprising cooperating locking means in the form of ribs (11, 12) and grooves (9, 10). The locking means of the upper side and lower side of the tongue (1) and groove (2) respectively are arranged staggered in an insertion direction in which the two panels to be joined to each other are joined to configure a firm joint between two adjoining panels at which an additional surface portion (31; 32; 51) step (31) is provided at the surface area of the upper cheek (3) facing the groove (2) and/or of the lower cheek (5) of the groove which is formed as a step (31) or bevel (32; 51).
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