关键词 ：硬塑料管；管材；管径；冻结深度；埋置深度；管槽断面 [gap=921]Key words: hard plastic pipe; pipe materials; pipe diameter; frozen depth; embedded depth; cross-section of
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At present, the common underground pipelines are steel tube, reinforced concrete pipe, and PVC hard plastic tube. The cost of them is much high and it is also difficult to lay out.
目前常用的地埋管有钢管、钢筋混凝土管、PVC硬塑料管，这些管道的成本都较高，且施工难度大。
The Division specializes in all kinds of soft and hard pipe, shaped material extrusion and plastic injection molding.
本司专营塑胶模具、塑胶注塑及各类软管材，异形材挤塑加工。
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