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Chocks (step fixtures)
Chocks (step fixtures) are structural plastic blocks inserted between the side ropes and ladder steps to keep them strictly horizontal in all planes.
- Compliant to ISO 799 and ISO 5489
- Corrosion-resistant, high-durability material
- Light weight and high-visibility colors
- Can be made to desired size and type
According to ISO 799 and ISO 5489, Chocks (step fixtures) shall be of a type that retains at least 30% of its original tensile strength and at least 80% of its original impact strength when subjected to the one-year outdoor weathering test described in method A of ISO 877.
Description
Introduction:
Chocks (step fixtures) are the specialized structural to keep pilot ladder and embarkation ladder steps fixed and horizontal. All chocks must be properly designed and fitted to prevent the ladder from twisting, bowing, or having steps slide along the side ropes.
Intended for:
Manufacture and repair Pilot ladder, embarkation ladder and jacob’s ladder
Comply with:
ISO 877-2:2009, Plastics – Methods of exposure to solar radiation – Part 2: Direct weathering and exposure behind window glass.
Specification:
| Type | Wedge (small) | Wedge (big) | Wedge (big with pole) | Wedge (big with pole and tail) |
| Material | PP/ ABS/ Nylon/ HDPE | |||
| Color | White/ Red/ Green/ Nature/ Fluorescent yellow-green | |||
| Top Length | 28mm | 28mm | 28mm | 28mm |
| Bottom Length | 55mm | 51mm | 51mm | 51mm |
| Height | 48mm | 66.5mm | 66.5mm | 66.5mm |
| Thickness | 4mm | 4mm | 4mm | 4mm |
| Positioning Pole | / | / | Φ8×13mm | Φ8×13mm |
| Fixing Tail | / | / | / | Φ3.5×32mm |
| Suit Rope Diameter | 22mm | 22mm | 22mm | 22mm |
| Weight (ref. only) | 26g (ABS) | 40g (ABS) | 43g (ABS) | 40g (HDPE) |
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