গ্লাস রিইনফোর্সড প্লাস্টিক নিকাশী পাইপ

Items

GRP

SP

DIP

RCP

HDPE

technical

Material

Composite material

Metallic material

Metallic material

Inorganic nonmetallic material

Polymer material

Type

Flexible

Flexible

Flexible/rigid

Rigid

Flexible

Application area

water supply drainage

water supply

water supply drainage

water supply drainage

drainage

Way of construction Work 

Excavation

Excavation

Excavation

Excavation

Excavation

Connection mode

Flexible sleeve

Rigid welding

Flexible socket

Flexible socket

Rigid hot melt

Section length

≤18

6

6/8.15

2

≤12

Weight

5points

4 points

3 points

1point

5 points

Hydraulic property

5 points

4 points

4 points

3 points

5 points

Corrosion resistance

5 points

1point

3 points

2 points

5 points

Joint safety

3 points

4 points

3 points

2 points

1point

Resistance to internal pressure

4 points

5 points

5 points

2 points

1point

Resistance to external pressure

3 points

3 points

4 points

5 points

2 points

Impact resistance

2 points

4 points

4 points

5 points

1point

Construction speed

5 points

1point

4 points

2 points

2 points

Foundation bearing requirements

3 points

4 points

3 points

1point

3 points

Backfill requirement

2 points

3 points

4 points

5 points

2 points

Working life

4 points

3 points

3 points

3 points

3 points

Quality stability

3 points

4 points

4 points

2 points

2 points

Applicability of pipe fittings

4 points

4 points

3 points

1point

3 points

Working condition applicability

3 points

4 points

5 points

2 points

2 points

Comprehensive technical performance

3.6 points

3.4 points

3.7 points

2.6 points

2.6 points

Economical

Pipe cost

3 points

3 points

1point

5 points

5 points

Construction cost

3 points

2 points

3 points

1point

2 points

Maintenance cost

3 points

3 points

3 points

3 points

2 points

Comprehensive economic performance

3 points

2.7 points

2.3 points

3 points

3 points

Typical shortcomings

Poor impact resistance,

high backfill requirements

Easy to corrode and slow to install 

The lining is easy to crack, easy to corrode and the cost of pipe is high

resistance to internal pressure is poor, construction cost is high

Resistance to internal pressure and impact resistance are poor and joint is high-risk.

Note

1. Each item adopts 5 points system. When performance is excellent, then its score is high.