Underground Drainage – LEYUAN https://letongplastic.com Trusted Industrial Pipe Manufacturing. Tue, 03 Feb 2026 16:48:46 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://letongplastic.com/wp-content/uploads/2026/02/cropped-Site-Icon-32x32.png Underground Drainage – LEYUAN https://letongplastic.com 32 32 Double-Wall Corrugated Pipe https://letongplastic.com/product/double-wall-corrugated-pipe/ https://letongplastic.com/product/double-wall-corrugated-pipe/#respond Tue, 03 Feb 2026 12:46:46 +0000 https://letongplastic.com/?post_type=product&p=912 Double-wall corrugated pipes combine a smooth internal bore for hydraulic efficiency with a corrugated external profile for structural strength. Engineered for buried drainage, cable protection and stormwater conveyance, these pipes are lightweight for handling yet capable of high load-bearing when installed with proper bedding. Available in a wide diameter range with profiles tailored to traffic or soil loading conditions, these products are frequently used in highways, surface water systems and utility conduits.

  • Advantages:
  • High structural performance with reduced weight.
  • Smooth internal surface improves flow and reduces blockages.
  • Good for trenchless installation and long runs.
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