Sell embarking ladder

embarking ladder
aluminum embarking ladder
CB/T428-94

Length: 4.65, 6.2,9.3,12.4, 15.5 etc.
number of steps: 15,20,30,40,50
number of ring: 60, 80,120,160,200
step distance: 0.31+/-0.005

wooden embarking ladder
CB/T428-94

Length: 4.65, 6.2,9.3,12.4, 15.5 etc.
number of steps: 15,20,30,40,50
number of ring: 60, 80,120,160,200
step distance: 0.31+/-0.005