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  6. Rainwater storage tank: Underground pit repurposed with all-resin polyethylene access hole.

Rainwater storage tank: Underground pit repurposed with all-resin polyethylene access hole.

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EP-Sleeve

last updated:Aug 17, 2026

EPJ
EPJ
  • Special site
  • Official site

"EP Sleeve," a non-corrosive polyethylene pedestrian passage that contributes to flood prevention measures.

The trend of installing rainwater storage tanks in "underground pits" rather than "outdoor buried" locations is increasing in urban areas due to site constraints, construction feasibility, maintenance management, and the advancement of flood control measures. Utilizing underground pits contributes to the effective use of above-ground space and reduces risks during disasters, but the durability of the installed equipment becomes crucial. Our all-resin pedestrian access "EP Sleeve" provides a highly reliable solution to these challenges through the use of non-corrosive materials and extended lifespan. 【Usage Scene】 Pedestrian access during the installation of water tanks in underground pits. 【Benefits of Introduction】 - Extended lifespan due to non-corrosive material "ALL polyethylene material." - Improved efficiency in cleaning and maintenance operations. * Of course, it also contributes to "labor-saving" with lightweight resin during the construction process! * For details, please request a catalog from "Contact Us" or view the PDF data from "Download."

    Formwork materialFrame construction accessoriesPiping materials (plastic pipes)
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Rainwater storage tank: Underground pit repurposed with all-resin polyethylene access hole.

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  • EPJ Web「BUILD-EASE PROJECT」
  • Special site - Product/service details - https://pr.www.ipros.com/epj/product/

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basic information

【Features】 - Made of non-corrosive all polyethylene, suitable for submerged environments. - Expected lifespan of approximately 30 to 50 years, contributing to longevity. - Compared to rigid PVC pipes at approximately 53kg/m, the EP sleeve weighs about 17kg/m, significantly improving the efficiency of transportation and installation work. <Specifications> (This product is based on nominal inner diameter) - EP-600 Inner diameter: 600 / Outer diameter: 700 (mm) Reference weight: approximately 17kg/m *EP-700 Inner diameter: 700 / Outer diameter: 816 (mm) Reference weight: approximately 23kg/m *EP-800 Inner diameter: 800 / Outer diameter: 938 (mm) Reference weight: approximately 29kg/m [Basic manufacturing length: Minimum 300 to maximum 1900mm] ■Only for EP-600, we also accept manufacturing lengths over L=1900mm. Please consult us in advance■ Note 1) The allowable tolerance for the inner diameter of the pipe is ±1.5%. Note 2) The cutting tolerance for the pipe is manufacturing length -5mm to 0mm. Note 3) *Sizes are not part of regular stock items. Please confirm the manufacturing lead time in advance. ▲Please consider the reinforcement of the sleeve pipe's internal space based on the concrete pouring speed, pouring height, mouth diameter, and beam width at each construction site before use▲

Price range

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Delivery Time

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Applications/Examples of results

"Are the beam height and beam width of buildings trending towards extension?" - Responding to high-rise and large space development - Evolution of seismic and vibration control technologies - Diversification of building uses - Securing equipment space These are said to be the possible factors, but on the other hand, the current construction sites are facing numerous challenges such as labor shortages, aging workforce, and a lack of skilled workers. We urgently need to achieve "labor-saving" and further realize "manpower-saving" by proposing the "lightweight" of human passage sleeves. "Lightening the burden on the site with technology and ideas!" ====================================== ■ We also offer labor-saving products for electrical equipment, such as underground beam sleeves ■ 'Waterproof sleeve for underground exterior walls, "Pipe-in-Sleeve" (abbreviated as PIS)' "Labor-saving construction for underground beam penetration! Ensuring the waterproof performance of buildings!" For the underground exterior wall, we apply "waterproof treatment" in advance at the factory to the PVC sleeve and the surrounding space of the E-flex (FEP), delivering it as prefabricated. There is no troublesome work required on-site, and after installation, it is basically "just joint connection." This ensures stable waterproofing! Improving work efficiency realizes "labor-saving" for flood prevention and water resistance. Please download from the related catalog.

Detailed information

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Line up(3)

Model number overview
EP-600 Nominal Diameter (Inner Diameter) Outer diameter: 700mm
※EP-700 Nominal Diameter (Inner Diameter) Outer diameter: 816mm (not a regular stock item)
※EP-800 Nominal diameter (inner diameter) Outer diameter: 938mm (not a regular stock item)

catalog(4)

Download All Catalogs
Coming soon! High-density polyethylene pedestrian passage (pedestrian opening) "EP Sleeve" Lightweight! Labor-saving! A4

Coming soon! High-density polyethylene pedestrian passage (pedestrian opening) "EP Sleeve" Lightweight! Labor-saving! A4

PRODUCT
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Contact this catalog

Proposal for switching from PVC manholes (manholes for pedestrian access)

Proposal for switching from PVC manholes (manholes for pedestrian access)

OTHER
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Contact this catalog

Recycled PVC Pipe (Vinyl Pipe) Catalog

Recycled PVC Pipe (Vinyl Pipe) Catalog

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A3 size spread

[Underground beam sleeve/flood prevention/waterproofing] Waterproof sleeve for underground exterior walls "Pipe in Sleeve" A3 size spread

PRODUCT
  • E-book viewing
  • Catalog download

Contact this catalog

CAD data(12)

Model number overview File
[Drawing] EP-Sleeve (Inner Diameter 600 / Outer Diameter 700) EP-600 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites!
  • 2D pdf ( 48KB)
[Drawing] EP-Sleeve (Inner Diameter 600 / Outer Diameter 700) EP-600 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites!
  • 2D jww ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 600 / Outer Diameter 700) EP-600 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites!
  • 2D pdf ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 600 / Outer Diameter 700) EP-600 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites!
  • 2D dwg ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 700 / Outer Diameter 816) EP-700 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites! ■Made-to-order product sizes■
  • 2D pdf ( 47KB)
[Drawing] EP-Sleeve (Inner Diameter 700 / Outer Diameter 816) EP-700 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites! ■Made-to-order product sizes■
  • 2D jww ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 700 / Outer Diameter 816) EP-700 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites! ■Made-to-order product sizes■
  • 2D dxf ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 700 / Outer Diameter 816) EP-700 Lightweight polyethylene pedestrian passage "EP-Sleeve" A proposal for labor-saving at construction sites! ■Made-to-order product sizes■
  • 2D dwg ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 800 / Outer Diameter 938) EP-800 Lightweight polyethylene human passage (human entrance) "EP-Sleeve" Proposal for labor-saving at construction sites! ■Made-to-order product size■
  • 2D pdf ( 46KB)
[Drawing] EP-Sleeve (Inner Diameter 800 / Outer Diameter 938) EP-800 Lightweight polyethylene human passage (human entrance) "EP-Sleeve" Proposal for labor-saving at construction sites! ■Made-to-order product size■
  • 2D jww ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 800 / Outer Diameter 938) EP-800 Lightweight polyethylene human passage (human entrance) "EP-Sleeve" Proposal for labor-saving at construction sites! ■Made-to-order product size■
  • 2D dxf ( 0B)
[Drawing] EP-Sleeve (Inner Diameter 800 / Outer Diameter 938) EP-800 Lightweight polyethylene human passage (human entrance) "EP-Sleeve" Proposal for labor-saving at construction sites! ■Made-to-order product size■
  • 2D dwg ( 0B)

Company information

EPJ

EPJ

Building materials, supplies and fixtures manufacturers

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A manufacturer specialized in planning, design, and engineering. We focus on product development to solve various issues at construction sites, providing innovative, cutting-edge, and ecological products. Please feel free to contact us.

Product/Service List (47)

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