| 摘要 |
A composite product (1, 2, 3, 4, 300) comprises a body (100, 200, 301) and a polymeric component (41, 50, 51, 55) cast onto a surface of the body. In one form, the product is for water infrastructure and the body is in the form of a hollow section and a water impermeable interface is formed between the body surface and the component. |
