In the early days the overhead power cable mainly relied on wooden pole as the main material. As timber resources got scarce and difficult to obtain due to the protection by each country, concrete pole became an alternative. However, concrete pole is too heavy, not convenient to install and easy to be corroded by sandy wind, American and some European advanced countries pioneered using the FRP power pole as the replacement in attribute to its excellent properties of lightweight, good physical properties and anti-corrosion. Nowadays FRP power pole has been adopted as the choice of power transmission lines in most of the modern countries.

Description

Description.

FRP Poles using newly invented technology to produce high quality FRP Pole with competitiveness. Using un-saturable polyester resin as

basic material and unidirectional fiberglass woven fabrics as skeleton, the FRP pole is taken shape by centrifugal process. It could be used

as luminary pole, utility pole, flag pole and other applications.

Advantages of FRP Pole.

1/ Non-conductive and excellent insulation property.

2/ Safe in accident cases.

3/ Anti-corrosion and rust free – especially suitable to be used under extreme weather condition including high humidity coastal area, desert,

oil field, high altitude and industrial area with acid and alkali condition.

4/ Light weight, around 1/3 weight of the steel lighting pole. Easy installation and save on labor, time and equipment.

5/ Maintenance free, long-life span.

6/ Aesthetics, smooth surface with good finishing. Also can be color matched to suit any environment.

7/ Excellent Mechanical Properties.

Material

Tensile Strength

(103 PSI)

Flexural Strength

(103 PSI)

Compression Strength

(103 PSI)

Composite/FRP 80 100 45
Die Cast Aluminum 48 48 48
Low Carbon Steel 48 48 48
Stainless Steel 80 80 80

FRP with 80% fiber glass content using filament winding (Source: Reinforced Plastics Handbook/ second Edition by John Murphy)

Pole Types Comparision.

FRP Poles have distinctive advantages compared with the traditional material ones, such as steel pole, aluminum pole, concrete pole and

wood pole.

FRP Poles Galvanized Steel Poles Aluminum Poles Concrete Poles
Light Weight G B A B
Direct Burial G B B A
Easy to Maintain G B A A
Color Stability G B B B
Easy to Install G B B B
Non-Conductive G B B G
Corrosion Resistance G B B A
Long Life Span G A G A

G. Good                   A. Average                    B. Bad

FRP Pole Standard.

We follow BS 1990-1 specification, withstand max wind speed of 40m/sec.

1/ USA Standard: ANSI C136.20-1990; ASTM D4923-01, Class 1, National Pole Standard.

2/ EU Standard: EN40.

3/ China Standard: CNS-11652.

Bending Testing.

Applied loading is calculated based on wind speed of 60m/sec according to ANSI.

Pole Height (m) Deflection Design Max Deflection Loading (Kg) Note
4.5 10% 40 cm 54
5.5 10% 50 cm 66
6.5 10% 60 cm 74
7.5 10% 70 cm 86
8.5 10% 80 cm 94
9.5 10% 90 cm 101
10.5 10% 100 cm 112
11.5 10% 110 cm 165
12.5 10% 120 cm 179

FRP Pole Specification & Design.

Our company designs and produces the FRP pole according to ANSI CI 136.20:1990. The exterior surface should be smooth and aesthetic, shall be free of crack, air bubbles, damage or any exposed surface fiber. The surface of the pole should be finished with an ultraviolet-resistant uniform coating and has exceptional weather-resistance performance. The interior surface should be free of stratification, blocking and white stain that is the result of the fiber not being thoroughly wetted by the resin. Based on wind speed of 60m/sec equivalent to Beaufort Scale Force 17, the pole top deflection induced by the wind acting on the pole shall not exceed 10% of the pole length.

For FRP Lighting pole divides into direct- burial pole and anchor-base pole, the direct-burial pole includes shaft, single arm, double arm. Anchor-base pole include: FRP base shaft, FRP base single arm, FRP base double arm, steel base shaft, steel base single arm and steel base double arm.

Our company has two tapers for the lighting pole, one type is 1/75, the minimum diameter is 80mm, the maximum diameter is 260mm and the maximum length: 12000mm; the other type is 1/55, the minimum diameter is 80mm, the maximum diameter is 298mm and the maximum length is12000mm.

The cover of wire hole must be waterproof, the metal fittings to be used for interior fastening must be hot galvanized or stainless steel. The height of the

FRP Lighting Pole should have a tolerance of +30mm, -0mm and the thickness is +3mm, -0mm. The surface hardness of the pole should be over 35.

The bent strength of the pole should be over 320Mpa. According to AASHTO.LTS.2:198, the pole shall not exceed a maximum deflection of 10% of the pole length above the ground line when subject to the maximum simulated wind loading and shall not have more than 1% permanent deflection.

Specification of single pole.

Nominal height (H)

Depth of planting (P)

Height above ground (H1)

Top dia of pole (D1)

Bottom dia of pole (D2)

Ultimate load at pole top (Horizontal) (W)

Load/mm of deflection at point of load

Deflection under ultimate load (D) Minimum weight

Minimum thickness

M

M M mm mm KN N mm Kg±10%

mm±1

6

7

8

1.2

1.2

1.5

4.8

5.8

6.8

150

150

150

236

248

263

2.39

2.31

2.40

9.3

6.0

4.8

472

718

917

38.4

46.8

55.8

4.0

4.0

4.0

8.5

9.0

9.5

1.5

1.5

1.5

7

7.5

8

150

150

150

270

277

284

2.81

2.46

2.52

4.5

3.6

3.1

1069

1239

1458

60.5

65.3

70.2

4.0

4.0

4.0

10

10.5

11

1.5

1.5

1.8

8.5

9

9.2

150

150

150

291

298

305

2.23

2.31

2.40

2.6

2.3

2.3

1627

1874

1913

71.6

76.6

81.7

4.0

4.0

4.0

12 1.8 10.2 150 320 2.26 1.7 2139 105

4.0

    en_USEN