HDPE Double wall Bellows (high-density polyethylene double wall bellows

Features: outer wall corrugated structure + inner wall smooth, high ring stiffness, lightweight, corrosion resistance, long service life.Applications: municipal drainage, building rainwater discharge, farmland irrigation, communication cable protection, etc.

HDPE double-wall corrugated pipe is made of high-density polyethylene (HDPE) material by an advanced double-layer co-extrusion process, the outer wall is a ring corrugated structure (enhances the compression ability), the inner wall is smooth (reduces the flow resistance), both high strength and lightweight characteristics, is an ideal substitute for traditional concrete pipe, cast iron pipe.

Core advantages：

1. Excellent compression performance

Outer wall corrugated design: enhanced ring stiffness (SN8-SN12.5), high compressive strength, suitable for different burial depth requirements.

High toughness HDPE material  : good flexibility, impact resistance, not easy to break, suitable for foundation settlement.

2. Super corrosion resistance

Acid and alkali resistance, anti-aging: HDPE material is not corroded by chemicals, sewage, and soil, and has a long service life.

Anti-scaling  : The inner wall is smooth, the friction coefficient is low, the long-term use is not easy to accumulate scale, and the drainage efficiency is higher.

3. Light and easy to construct

The weight is only 1/10 of the cement pipe, convenient for transportation and handling, greatly reducing the construction cost.

Flexible connection method: It can be connected by a socket rubber ring, has fast installation, and shortens the construction period by 30%.

4. Environmental protection and energy saving

– 100% recyclable material, in line with environmental requirements, no pollution.

Inner wall low resistance: compared with traditional pipes, the water flow resistance is small, and the drainage efficiency is improved by more than 20%.

Technical Parameter：

Material High-density polyethylene (HDPE)

Ring stiffness  SN8 / SN10/ SN12.5 (optional)

Pipe diameter range  DN200mm ~ DN1200mm

Single length  6 m / 9 m (customizable)

Working temperature  -30℃ ~ 60℃

Connection method  socket connection, hot melt welding, clamp connection

Executive standard  GB/T 19472.1-2004

Application scenarios：

Municipal Engineering: urban rainwater, sewage discharge system

Construction project: underground drainage of the community, rainwater collection

Agricultural irrigation: farmland drainage, water-saving water pipeline

Industrial field: Factory wastewater discharge, chemical pipeline

Why choose our HDPE Double-Wall Corrugated Pipe

High-quality raw materials: imported HDPE raw materials are used to ensure pipe toughness and weather resistance.

Advanced technology: automatic production line, uniform corrugated structure, stable quality.

Strict quality inspection: Each batch of products passes a number of tests such as ring stiffness and impact resistance, and provides a test report.

Customization Service: Support different specifications, and color customization, to meet individual needs.

National case: It has been successfully applied to national municipal drainage projects and drilling projects in North and South Asia.

FAQ:

Q1: How much pressure can HDPE double-wall bellows withstand?

A: ring stiffness SN8-SN12.5, can withstand different buried depth soil pressure, specific needs to be selected according to engineering requirements.

Q2: What should we pay attention to during construction?

A: The foundation should be smooth, avoid sharp stone impact when backfilling, it is recommended to use sand backfilling.