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设计制造结构简单、装夹方便的专用夹具（采用１件胎座，５种夹具，根据需要拼装成形），解决了通用夹具不能装夹４５°管接头的难题。
Design and manufacture of a simple structure, convenient clamping fixture (using a placenta, five kinds of fixtures, according to the need to shape the assembly), to solve the common fixture can not be clamped 45 ° pipe joints problems.