A wind turbine steel tower ring segment for a wind turbine tower (102, 550, 800, 900), comprising - a shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720) with an extent in the direction of a segment height, of a segment ring direction and of a segment thickness and with ∘ a first horizontal joint side (202, 224, 304, 404, 504, 514, 614) and a second horizontal joint side (206, 226, 406, 506, 516), ∘ a first vertical joint side (208, 228, 308, 408, 608) and a second vertical joint side (210, 230, 310, 410), - wherein a first vertical flange (309, 409, 609, 912) is arranged at the first vertical joint side (208, 228, 308, 408, 608) and/or a second vertical flange (311, 411, 922) is arranged at the second vertical joint side (210, 230, 310, 410), wherein the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922) enclose(s) an angle with the shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720), - wherein at least one connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) for the arrangement of functional elements is formed on the first vertical flange (309, 409, 609, 912) and/or on the second vertical flange (311, 411, 922), wherein the connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) projects from the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922), characterized in that - wherein the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922) and the connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) enclose the same angle with the shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720). - a shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720) with an extent in the direction of a segment height, of a segment ring direction and of a segment thickness and with ∘ a first horizontal joint side (202, 224, 304, 404, 504, 514, 614) and a second horizontal joint side (206, 226, 406, 506, 516), ∘ a first vertical joint side (208, 228, 308, 408, 608) and a second vertical joint side (210, 230, 310, 410), ∘ a first horizontal joint side (202, 224, 304, 404, 504, 514, 614) and a second horizontal joint side (206, 226, 406, 506, 516), ∘ a first vertical joint side (208, 228, 308, 408, 608) and a second vertical joint side (210, 230, 310, 410), - wherein a first vertical flange (309, 409, 609, 912) is arranged at the first vertical joint side (208, 228, 308, 408, 608) and/or a second vertical flange (311, 411, 922) is arranged at the second vertical joint side (210, 230, 310, 410), wherein the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922) enclose(s) an angle with the shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720), - wherein at least one connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) for the arrangement of functional elements is formed on the first vertical flange (309, 409, 609, 912) and/or on the second vertical flange (311, 411, 922), wherein the connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) projects from the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922), characterized in that - wherein the first vertical flange (309, 409, 609, 912) and/or the second vertical flange (311, 411, 922) and the connection element (212, 214, 232, 234, 236, 238, 240, 242, 244, 246, 312, 314, 316, 318, 432, 434, 436, 438, 404, 442, 444, 446, 448, 450, 518, 553, 554, 714, 724) enclose the same angle with the shell segment (202, 222, 302, 402, 502, 512, 612, 710, 720).