A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm.sup.3. The pipe is reinforced by a plurality of carbon fiber layers. In a first carbon fiber layer, fibers are oriented within an angle of 60-90 to an axial direction of the boom. In a second carbon fiber layer, fibers are oriented within an angle of 30. degree. to the axial direction of boom.
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机译：冲浪臂，包括密度为1.4-1.6 g / cm 3的合成树脂管。该管由多个碳纤维层加固。在第一碳纤维层中，纤维相对于动臂的轴向在60-90°的角度内取向。在第二碳纤维层中，纤维在30度的角度内取向。到动臂的轴向。
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