分析了带弯芯塑料三通管的注射成型工艺，并对成型过程出现的缺陷进行预测。

The molding technology of three-way plastic tube with flexural core is analyzed and the molding faults in plastic injecting process are forecasted.

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用于组装三通，四通，弯通或有直角连接的地方。

For assemblies of Tee, Cross, Bend or other angles joints.

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我们常用弯头（弯管、法兰、三通、大小关）作为一种管件。

We usually use elbow( bend, flange, tee, reducer) as a kind of pipe fitting.

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