Insulator Fiberglass Electrical Cross Arm Square Tube

• Surface Treatment: Smooth
• Color: Customized Colors
• Thickness: Customized
• Usage: Industral
• Product Categories: FRP Pipe
• Molding Method: Resin Transfer Molding
• Model NO.: sz-frp
• Material: Fiberglass
• Fiber Type: GFRP
• Type: Polyester FRP
• Certificate: ISO9001
• Voltage: Under 1800kv
• Transport Package: Container
• Specification: Customized
• Trademark: SZ
• Origin: Hebei, China
• HS Code: 701990900
• Production Capacity: 3000 Per Month

Product Description

Glass fiber pultruded cross arms are widely used in the construction of overhead power transmission and distribution lines.

They are commonly used in countries such as the United States, Canada, Australia, and Malaysia for their high strength,
durability and resistance to corrosion. They are also used in offshore wind farms for their high resistance to salt water
corrosion.Glass fibercross arms pultruded tube are a popular alternative to traditional wooden and steel crossarms due to
their lightweight, easy installation, and reduced maintenance costs. Usually, the materials used for cross arms in
transmission towers are wood, steel and glass fiber. Compared with the other two materials, the composition of glass fiber
is larger. This is because glass fiber is non-conductive and has a higher mechanical strength to weight ratio. These charact
-eristics make the glass fiber cross arm have great potential in replacing steel and wood cross arms. Traditionally,
transmission tower structures use treated wood, steel or concrete as building materials. In recent years, the adaptability of
glass fiber in cross arm production has been applied. This is because the surface of the glass fiber is smooth and firm, and
the outer layer has a film, which can protect the inner surface of the Fiberglass Pultruded cross arm Power that may cause
flashover.

Width/Height/Thick ness mm	Weight g/m
50×50×4	50×50×4	with cap die
50×50×6	2000
70×70×5	2540
75×75×5	2800	with cap die
100×100×5	3750	with cap die
100×100×6	4500
100×100×10	7060	with cap die

 

Crossarm	Electrical Strength
	AC Voltage		CFO Voltage
	Dry	Wet	Dry	Wet
Wood	Insulation	Conduction	Insulation	Insulation
Fiberglass	Insulation	Conduction	Insulation	Insulation

1. Particularly weather-resistant in coastal areas.
2. Lightweight for easy installation in hilly areas.
3. Avoid bird problems.
4. Continue to supply power even after insulator rupture 5.Smaller size insulators can be used, reducing the cost of the
insulators.

Solid / hollow cross arms
Polyurethane foam filling	No polyurethane foam filling
Improve the rigidity of the cross arm	Weaker hardness
Prevent plastic deformation	Easy to deform

Manufacturing Technique

Glass Fiber + Resin System
Part No	Resin Base	Application	Temperature resistance	Corrossion resistance	Flame resistance
VE	Vinyl Ester	Superior Corrosion Resistance and fire retardant	Very Good	Excellent	Very Good
ISO	Isophthalic Polyester	Industrial grade corrosion resistance and fire retardant	Good	Good	Good
ORTHO	Orthophthalic resin	Moderate corrosion resistance and fire retardant	Common	Common	Common
EPOXY	EPOXY Resin

Technical Date

FRP cross arm technical parameters
No	Item	Unit	Performance
physical properties
1	proportion	g/cm3	1.9~2.0
2	Glass fiber content	%	58~65
3	water absorption	%	≤0.2
Mechanical properties
4	Barcol hardness		≥55
5	Tensile strength (longitudinal)	Mpa	≥550
6	Tensile Strength (Transverse)	Mpa	≥65
7	Bending Strength (Longitudinal)	Mpa	≥600
8	Bending Strength (Transverse)	Mpa	≥70
9	Hole edge extrusion strength (longitudinal)	Mpa	≥90
10	Hole edge extrusion strength (Transverse)	Mpa	≥50
11	Shear strength	Mpa	≥15
Electrical properties
12	breakdown voltage	kv/mm	≥10
13	Arc resistant	S	≥180
14	Compared with electric trace index	V	≥600
15	Volume resistivity	Ω·cm	1.0*1012
16	Surface resistivity	Ω·cm	1.0*1012

1. What is your minimum order quantity?
Our MOQ is 1 meter.(Without limiting sizes and specification,according to actual situation)

2. How can I get samples to check your quantity?
We can offer samples for free.

3. Can you do the production as customized?
Yes, we have a professional technique team, we could produce the fiberglass depends on your requirements.

4. What length of the fiberglass profiles?
Any length can be cut. according to customer requirements.

5. How to pay?
Usually by T/T, L/C also ok.