SZ method
The SZ method uses a maintenance hatch to insent the SZ liner tinto a sewage pipe, expanding and heating the liner with air and steam to form a new pipe inside the existing pipe.
The SZ method has the following features:
| Produces a fibrous FRP pipe (a new pipe) inside the existing pipe. | The SZ liner becomes hardened inside the existing pipe and forms a FRP pipe. |
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| Provides the same or greater flowing capability than a new pipe. | The SZ pipe has a smooth inner surface, with 0.01 or less coefficient of roughness, providing the same or greater flowing capability than a new pipe. |
| Has high durability and anti-chemical properties. | The SZ exhibits high durability and resistance to acid and oil, and has a semi-permanent life span. |
