noun
leg length (welding); length of fillet weld
Technical term used in welding to specify the size of a fillet weld, measured as the leg length of the triangular cross-section.
この溶接部の脚長は6ミリに指定されている。
The leg length of this weld is specified as 6 mm.
隅肉溶接の強度は脚長に依存する。
The strength of a fillet weld depends on its leg length.