1) Smooth inner surface of the pipe insures large input flow with small fluid friction. The pipe is not easy to block.

HDPE double wall corrugated pipe

used for drainage, sewage. Economical and environmental, easy to instal.

1. Characteristics

1) Smooth inner surface of the pipe insures large input flow with small fluid friction. The pipe is not easy to block.

2) Connected easily with rubber rings, easy to install.

3) Light weight makes pipe transportation more convenient.

4) Flexible connection to insure the pipe operate well after unevenly movement of the earth, not easy to leak. 

5) Chemically stable, corrosion-resistant, non-toxic, non-polluting, an environmentally friendly products.

6) Economical compared other traditional pipes.

7) Life span can be 50 years buried underground on normal conditions

2. Physical Properties

Item	Data
Ring stiffness S1, S2	≥4.0KN/m²,  ≥8.0KN/m²
Impact strength	TIR ≤10%
Flexiblity	Smooth, no reverse bend and crature
Inside Heating Box Test	No multi-layer and crature.
Moving Rate	≤4

3. Specifications   Unit: mm

Norminal Internal Dia.	Minimun Average Inner Dia.	Minimum Thickness	Minimum Inner Thickness	Minimum Depth
225	225	1.7	1.4	55
250	245	1.8	1.5	59
300	294	2.0	1.7	64
400	392	2.5	2.3	74
500	490	3.0	3.0	85
600	588	3.5	3.5	96
800	785	4.5	4.5	118
1000	985	5.0	5.0	140
1200	1185	5.0	5.0	162

Note:

1. Length: each pipe 6m long.

2. Color: outside black color, inside blue color.

HDPE Double Wall Corrugated Pipe