| 摘要 |
<p>A flexible sleeve containing structural stiffening elements 2,3 to protect pipelines from impact damage. The stiffening elements are dimensioned and arranged to ensure flexibility of the sleeve. The sleeve 1 is elastomeric, preferably polyurethane. Preferably the stiffening elements 2,3 have varying diameters and are not bonded to the sleeve 1.</p> |
