wheel 30-100 with frame track oblique straight round pulley iron wheels pulley 轮子 30-100带架 轨道斜直圆 滑轮铁轮子 滑轮

30 v type 50 v type 60 v type large 80 v type 100 v type 50 h type 60 h type 80 h type width 2cm 80 h type width 2.5cm 100 h type width 2cm 100 h type width 2.5cm 60 u-shaped large 80 u-shaped 100 u-shaped

galvanized