3M型标准皮带宽6mm规格齿数形状节径外径WL1KX轮毂直径内孔透孔外径档边外径档边内径档边型号3M10C/A9.558.7911197--3-136F-1013063M11C/A10.509.7411197--3-147F-1014073M12C/A11.4610.7011197--3-147F-1014073M14C/A13.3712.6111197--4-139.5F-1016953M15C/A14.3213.5611197--4-1811F-1018113M16C/A15.2814.5211197-104-1811F-1018113M18C/A17.1916.4311197-105 2312F-1023123M19C/A18.1417.3811197-105-2513F-1025133M20C/A19.1018.3411197-105-2514F-1025143M21A/B20.0519.2911197-115-251