Metal coils do not distribute weight well and are easily moved inside the container, potentially damaging the cargo, container, ship, endangering the life of the crew.
Appropriate measures must be taken during loading/unloading, to avoid damage to the container. These steel coils are usually placed on wooden pallets. Need technical reinforcement to avoid displacement. All fixing methods must be used at all positions of the coil: weight distribution, support platforms, bracing and lashing and must be strong enough to prevent displacement.
The maximum total weight according to the CSC Convention on the Safety of Containers includes: (cargo + pedestal/rack + tie rod)
Method of packing steel coils
- Eye to rear is the most recommended stuffing method.
- Eye to sky is used for light and short coils (i.e. the length of the coil is less than its diameter and its weight is less than 6 tons).
LOCATION OF METAL ROLL INSIDE CONTAINER
Only a single coil of steel should be placed in the center of the container
When two coils are loaded into one container, one should be placed as far as possible to the rear wall and the other as close to the door as possible. Sufficient space should be given for bracing and fixing between the rear door/wall and the steel coil.
When several steel coils are loaded into the same container, they must be evenly spaced along the length of the container, separated by tie rods and fixed.
EYE TO REAR
EYE TO SIDE
EYE TO SKY
SET THE METAL ROLL ON THE RED FLOOR
The pedestal needs to distribute the weight of the steel coil so that the linear load does not exceed 5 tons/m.
The pedestal consists of 2 square hardwood slats placed along the length of the container to form a rail. The length of the rail is determined by the weight of the cargo.
The distance between the 2 wooden rails must be placed so that the bottom of the coil does not touch the floor of the container.
For maximum stability, the distance between the coil and the floor should be 5 cm. The minimum distance between the 2 rails should be half the diameter of the coil.
Dimensions of the cross-section of the bar, depending on its required free end length on each side:
Example 1: steel coil weight: 8 tons, c = 65cm Result: 8ton / (5 tons / m) = 1.6m. a = 160cm, b = (160-65cm) / 2 = 48cm. Rail size required 160x10x10cm.
Example 2: steel coil weight: 14 tons, c = 85cm Result: 14ton / (5 tons / m) = 2.8m a = 280cm, b = (280-85cm) / 2 = 98cm. Rail size required 280x20x20cm.
| Cross section (section) | Maximum free end length on each side (b) |
| 10x10cm | 50cm |
| 15x15cm | 75cm |
| 20x20cm | 100cm |
| 25x25cm | 125cm |
| 30x30cm | 150cm |
It is not recommended to use a wooden bar with a cross section of 25x25cm or more for environmental reasons.
Steel coils on frames or pallets should be placed on auxiliary racks, in case weight distribution is required so as not to exceed a linear load of 5 tons/m.
If these racking requirements cannot be met, the coil is too heavy to load and can only be transported on flat rack containers.
Steel coils over 18 tons cannot be shipped in 20F containers.
METHOD OF METAL ROLL VOICE
- The tie rod is placed to prevent the steel coils from moving inside the container. Please note that the container side wall and door cannot bear any force. Any displacement can break, damage the cargo and endanger life. Therefore, the brace is spread over a large surface and at the lowest possible height.
- The pedestals must be reinforced to the side walls of the container using solid wood braces with a cross section of not less than 10cmx10cm. The maximum allowable distance between the braces is 50 cm. The tie rod must be nailed to the floor of the container every 40 cm.
- Bracing to the side: brace to the pedestal (a). Two pieces of wood (b) are placed between (c) and (a), with as wide a gap between them as possible. To keep all pieces (b) and (c) at the same height. At least 4 pieces are required for support (d), and are placed underneath and nailed together. It is important that (b) is attached to (c) and does not directly touch the side walls of the container
- Bracing is also made along the length of the container and is attached to the side-to-side support (e) on which the coil rests.
- Both bars (f) need to be placed between (e) and (g), all of the same height. It is best to place the bars (f) on the support and place (g) on the supports (h) of the same height as the base. A square wooden bar (g) rests its ends against the wavy side wall of the container.
Bracing between 2 coils is made with two bars (f) between (e) of each coil. Binding to the end wall of the container can be done with (g) fixing to the corrugated side wall or touching the end wall along its entire width.
Bracing can be designed without the need for nailing to the container floor or pedestal or rack. Nails can be used to hold the slats together, but force should not be applied to the nail.
Top view of the container door:
The picture shows an example of longitudinal bracing with the use of recess in the corner column on the door side.
The thick tie rod (g) rests on the thin brace placed in the recess next to the door.
LASHING – UNLIMITED METAL ROLL
All metal spools must be properly lashed. Loose cargo is not allowed into the container. To ensure that the goods are safe against tipping.
- Lanyards are fixed to the bottom points inside the container.
- Each metal roll needs to be connected to the container by 4 fastening points.
- Each rope needs to be tied so that its head and tail are connected to the same point.
- The material used for fastening must be steel wire with a minimum weight of 2 tons.
- Each lashing point can only bear a maximum load of 2 tons, so only 1 lashing point should be connected to one point in the container.
- For heavy, tall and thin coils, tie rods should be added to the side wall at a higher position.
- No floor contact
- Brackets and pedestals are placed (brown) and tie rods are placed along the side walls (yellow).
- The distance between the two square bars of the rack should be as wide as possible, as long as the steel coil does not touch the container floor
- The length of the holder (a) depends on the weight of the coil The length of the stand should be at least 20cm (10cm on each side) longer than the length of the coil.
- Bracing in the length direction is performed as followsPlace a tie rod on the pedestal from side to side (d), add a parallel brace forming a rail (f) along the corrugated side walls or recesses door corner posts and add two tie rods (e) connecting them. Below the tie rod (f) are small supports so that the height is synchronous with the structure. Bracing in the length direction must be placed on both sides of each coil
- Steel coils are tied with 4 steel wires, fixed coils in closed loops, one for each corner.
IFIC provides lashing services for goods on vehicles and issues lashing certificates – lashing goods at the request of shippers and transport units that meet Vietnamese and international standards. If you are looking for a lashing solution for your shipment, please contact Hotline +(84) 949983375 for advice.
