The high-density polyethylene pipe is a new type of tubing. 雨水管所采用的高密度聚乙烯管是一種新型管材。
The profiles are welded by HDPE extrudant at the profile edges which is overlapped by a winding and welding machine to form the pipe. 成型的管材呈螺旋直肋結構，聚乙烯管壁外表面有等間距螺旋環(huán)繞的肋片加強。
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