In order to ensure the personal safety of climbing workers and prevent falling and injury accidents, the setting and structure of movable folding ladders and straight ladders are stipulated.
2 scope of application is suitable for aerial work in factories, workshops, etc. When purchasing or using mobile folding ladders and straight ladders, the requirements of this standard must be met.
3 Definition No.4 Standard Content 4. 1 Technical Standard for Mobile Folding Ladder
4. 1. 1 The material of ladder beam and solid plate shall not be lower than the strength of 1Y 12 hard aluminum alloy.
4. 1.2 The section size of ladder beam shall not be less than 50*30*3MM.
4. 1.3 The pedal must be made of a rectangular tube with a section size of not less than 44*20*2MM.
4. 1.4 The length of ladder shall not exceed 5M, and the width of ladder shall not be less than 300MM.
4. 1.5 Pedal spacing is 270-300MM, and working angle is 75 5.
4. 1.6 The pedal surface must have stripes or patterns.
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