1、

the hydraulic experiment has proved that the standard circular section of the plastic hose can only be formed in the condition of a certain internal water pressure because the plastic hose is hydraulic smooth pipe, soft and elastic and different from the hard texture plastic pipe.

水力学实验表明,塑料软管是水力光滑管,但与硬质塑料管不同,它柔软而富弹性,只有在一定的内水压强下才能显标准圆形断面。

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2、

Smooth on inside PVC double wall corrugated pipe

PVC内光外波纹双壁管

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3、

this product is spiral rid reinforcing plastics pipe. the internal surface of the pipe is smooth, bright, soft and abrasion-resistant.

本产品是塑料螺旋加强支撑管.塑料管内平滑、光亮、柔软和耐磨。

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4、

The welding is so smooth that you can hardly see where the sections of pipe are joined together.

这管子焊接得很光滑,你很难看出什么地方是焊接的.

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5、

This system runs in LiaoYang Pipe Mill for two years, and proved its smooth and accuracy.

本系统已在辽阳钢管厂运行两年之久.

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