KS M ISO 4251-1-2022 农业拖拉机、拖车和机器用代码指定的斜交轮胎（帘布层等级标记系列）.第1部分:轮胎名称和尺寸以及认可的轮辋轮廓
Code designated diagonal tyres (ply rating marked series) for agricultural tractors, trailers and machines — Part 1: Tyre designation and dimensions, and approved rim contours