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美国研究了制造复合材料管件的新方法。在管子芯轴上套一个模压成的低熔点金属套管,套管外径即欲制成管子的内径。在套管外直接缠绕含有热固性树脂的预浸料,该预浸料树
The United States has studied a new method of making composite pipe fittings. In the tube mandrel set a molded low melting point metal casing, the casing diameter is to be made of the pipe diameter. A prepreg containing a thermosetting resin and the prepreg tree were directly wound outside the bushing