| 摘要 |
The invention relates to a tubular injection-moulded plastic part (1) presenting single-piece connecting elements (2) for cleaning devices. The injection-moulded part comprises a fibre-reinforced inner layer (3) and a substantially continuous external plastic coating (4) having a smooth surface which is fused with the inner layer by injection in a shared mould. Such tubular injection-moulded parts are preferably used for vacuum-cleaner hose or the tubes of high-pressure spraying plants. |
