Sliding gate valve plate for a molten metal gate valve having - an upper surface, - a lower surface, separated from the upper surface by a thickness of the sliding gate valve plate, said upper and lower surfaces being planar and parallel to one another, - a connecting outer surface connecting the upper surface to the lower surface and - a pouring channel fluidly connecting the upper surface to the lower surface, said pouring channel having a pouring axis of symmetry (Xp), - the upper and lower surfaces (2, 3) having upper and lower longitudinal extents (LOu, LOl), respectively, which are parallel to each other, and, perpendicular to the upper and lower latitudinal extents (LAu, LAl), respectively, wherein the upper longitudinal extent (LOu) is the longest segment connecting two points of a perimeter of the upper surface and intersecting the pouring axis of symmetry (Xp), - the longitudinal extents (LOu, LOl) being divided into two segments (respectively LOu1 and LOu2 and LOl1 and LOl2) connecting at the level of the pouring axis of symmetry (Xp), and wherein the segments LOu1 and LOl1 are on a first side of the pouring axis of symmetry, and the segments LOu2 and LOl2 are on a second side of the pouring axis of symmetry; - the latitudinal extents (LAu, LAl) being divided into two segments (respectively LAu1 and LAu2 and LAI1 and LAI2) connecting at the level of the pouring axis of symmetry (Xp), and wherein the segments LAu1 and LAI1 are on a first side of the pouring axis of symmetry, and the segments LAu2 and LAI2 are on a second side of the pouring axis of symmetry; - wherein the following ratios are defined, LOl 1 / LOu 1 = R 1, LOl 2 / LOu 2 = R 2, LAl 1 / LAu 1 = R 3, LAl 2 / LAu 2 = R 4, characterized in that, R1 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R2 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R3 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%, and R4 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%. - an upper surface, - a lower surface, separated from the upper surface by a thickness of the sliding gate valve plate, said upper and lower surfaces being planar and parallel to one another, - a connecting outer surface connecting the upper surface to the lower surface and - a pouring channel fluidly connecting the upper surface to the lower surface, said pouring channel having a pouring axis of symmetry (Xp), - the upper and lower surfaces (2, 3) having upper and lower longitudinal extents (LOu, LOl), respectively, which are parallel to each other, and, perpendicular to the upper and lower latitudinal extents (LAu, LAl), respectively, wherein the upper longitudinal extent (LOu) is the longest segment connecting two points of a perimeter of the upper surface and intersecting the pouring axis of symmetry (Xp), - the longitudinal extents (LOu, LOl) being divided into two segments (respectively LOu1 and LOu2 and LOl1 and LOl2) connecting at the level of the pouring axis of symmetry (Xp), and wherein the segments LOu1 and LOl1 are on a first side of the pouring axis of symmetry, and the segments LOu2 and LOl2 are on a second side of the pouring axis of symmetry; - the latitudinal extents (LAu, LAl) being divided into two segments (respectively LAu1 and LAu2 and LAI1 and LAI2) connecting at the level of the pouring axis of symmetry (Xp), and wherein the segments LAu1 and LAI1 are on a first side of the pouring axis of symmetry, and the segments LAu2 and LAI2 are on a second side of the pouring axis of symmetry; - wherein the following ratios are defined, LOl 1 / LOu 1 = R 1, LOl 2 / LOu 2 = R 2, LAl 1 / LAu 1 = R 3, LAl 2 / LAu 2 = R 4, characterized in that, R1 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R2 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R3 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%, and R4 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%. R1 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R2 is comprised between 50 and 95%, preferably between 57 and 92%, more preferably, between 62.5 and 90%, R3 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%, and R4 is greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%.