2.2mm hot dipped galvanized rockfall netting usually refers to double twisted hexagonal rockfall netting rolls made with 2.2mm mesh wire. This specification is not a universal answer for every slope project, but it is often discussed for light slope coverage, smaller rock-fragment control, repair material supply, distributor stock or orders where the project document has already specified the size.
The product discussed here is still rockfall netting roll material. It is not steel rope netting, an active protection system, a passive rockfall barrier or a complete slope engineering system. Whether 2.2mm is suitable should not be judged by wire diameter alone. Mesh opening, roll width, roll length, selvedge wire, hot dipped galvanized requirement and site environment should be considered together.
1. What Does 2.2mm Mean?
2.2mm refers to the mesh wire diameter of the rockfall netting. It is not the roll weight, and it is not a protection grade. For double twisted hexagonal rockfall netting rolls, wire diameter is only one part of the specification.
Common items to confirm include:
| Item | What to confirm |
|---|---|
| Mesh wire diameter | Such as 2.2mm. |
| Mesh opening | Common matching direction, such as 60x80mm. |
| Selvedge wire | Whether a heavier edge wire is required and what diameter it should be. |
| Surface treatment | Hot dipped galvanized, with zinc coating requirement if specified. |
| Roll size | Roll width, roll length and area per roll. |
| Quantity | Square meters, roll quantity or project requirement. |
A clearer description is not only "2.2mm rockfall netting." It should be: 2.2mm wire, 60x80mm mesh opening, hot dipped galvanized, rockfall netting rolls. With this information, the factory can calculate material, packing and delivery based on the same specification.
2. Why Is 2.2mm Often Discussed With 60x80mm Mesh Opening?
One common matching direction for 2.2mm wire is 60x80mm double twisted hexagonal mesh opening. Compared with 80x100mm, 60x80mm is a smaller mesh opening, so it is often discussed for smaller rock-fragment coverage, surface slope restraint, repair material or orders where the project document already specifies this mesh opening.
A smaller mesh opening does not mean it is always suitable for every project. The slope condition, rock fragment size, installation method and project document still need to be considered. If the site involves larger rock fragments or higher impact risk, the designer may require a heavier wire, a different specification or other system materials together with rockfall netting rolls.
For how slope angle and rock fragment size affect specification discussions, see how slope angle and rock fragment size affect rockfall netting discussions.
3. Hot Dipped Galvanized Requirement Should Be Clear
Hot dipped galvanizing provides a zinc coating on the steel wire and helps reduce corrosion during outdoor use. When purchasing, it is not enough to look only at the word "galvanized," because different orders may involve different zinc coating requirements, inspection methods and cost levels.
A safer confirmation method is to check:
- Whether hot dipped galvanized wire is clearly required
- Whether zinc coating weight or standard requirement is specified
- Whether mesh wire and selvedge wire use the same surface treatment
- Whether zinc coating test records or inspection photos are needed
- Whether the site is humid, coastal, mine-related or more corrosive
If the project is used in a humid, coastal or stronger corrosion environment, the user should not judge only by the lowest hot dipped galvanized price. Galfan or PVC coated options may also be compared. This does not mean the coating must be upgraded. The point is to describe the environment clearly before deciding the specification direction.
For coating selection logic, see how to choose rockfall netting.
4. Suitable Supply Scenarios
2.2mm hot dipped galvanized rockfall netting is more suitable for the following discussion scenarios:
| Scenario | Notes |
|---|---|
| Project document specifies 2.2mm and 60x80mm | Check roll size, zinc coating and quantity according to the document. |
| Light slope coverage material | May be used for surface rock-fragment restraint, but should still match site conditions. |
| Distributor stock | Suitable when the specification, roll width and roll length are already clear. |
| Repair material order | Should match the existing mesh opening, wire diameter and coating as closely as possible. |
| Sample confirmation | Mesh opening, wire diameter, selvedge wire and galvanized appearance can be checked before bulk order. |
This type of article discusses roll material supply, not complete slope protection system design. Anchors, steel rope netting, active protection systems and passive rockfall barriers belong to different product or system scopes and should not be mixed into one simple quotation.
5. How Is It Different From Other Common Specifications?
2.2mm hot dipped galvanized rockfall netting usually belongs to a lighter roll specification discussion. In real purchasing, users may also compare 2.7mm, 3.0mm, 80x100mm, Galfan, PVC coated and other directions.
A simple comparison can be understood this way:
| Specification direction | More suitable discussion |
|---|---|
| 2.2mm + 60x80mm | Smaller mesh opening, light coverage or specified-specification orders. |
| 2.7mm + 80x100mm | One common inquiry direction for rockfall netting rolls. |
| 3.0mm and above | Heavier material requirement; project document should be checked. |
| Galfan | Zinc-aluminum alloy coating and corrosion-resistance discussion. |
| PVC coated | Outer PVC layer, color, inner wire diameter and finished outside diameter. |
When purchasing, do not compare only the single price of "2.2mm" and "2.7mm." Mesh opening, roll width, selvedge wire, coating and packing all affect the final supply scope.
For basic specification data, see the rockfall netting specification table.
6. Summary
2.2mm hot dipped galvanized rockfall netting can be discussed as a material option for light slope coverage, repair material supply, distributor stock or orders with specified requirements. In real confirmation, the 2.2mm number alone is not enough. The 60x80mm mesh opening, roll size, selvedge wire, hot dipped galvanized requirement, quantity, packing and delivery information should also be checked.
Price comparison only becomes meaningful after the specification is aligned. Otherwise, different suppliers may quote with different mesh openings, different zinc coating expectations or different roll sizes. The price may look close, but the actual supply content may not be the same.
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