Our self-developed series of 11kv Post Insulator, 10kV Composite Long Rod Insulator, 45kV composite polymer pin insulator closely follow the market trend, and the raw materials are selected from reliable and stable brand manufacturers, so the quality is guaranteed. With professional production management experience, large-scale and efficient processing capabilities, highly competitive prices, reliable product quality and perfect service, we have won strong support from customers. The company adheres to the standard and orderly, scientific and rigorous, pragmatic and truthful attitude, and has won the praise and trust of cooperative enterprises. We continue to strengthen internal management and explore our own potential to ensure that we provide perfect service to each customer.
Composite Tension Insulator For electrified railway
The composite insulator is made of acid-resistant epoxy and glass fiber core rod, HTV silicone rubber and metal fittings.
Technical Data
Description | Section Height H(mm) | Minimum Nominal Creepage Distance(mm) | Designed Creepage Distance(mm) | Designed Arcing Distance(mm) | Specified Mechanical Tensile Load(kN) | Electrical Date | ||
Lightning Impulse Withstand Voltage ≥(kV) | Dry Power Frequency Withstand Voltage (kV) | Wet Power Frequency Withstand Voltage (kV) | ||||||
FQX-25/160QT | 750±20 | 1200 | 1300 | 512 | 160 | 270 | 160 | 130 |
FQX-25/160QH | ||||||||
FQX-25/160HH | ||||||||
FQXJ-25/160QT | 800±20 | 1400 | 1485 | 562 | 160 | 290 | 175 | 140 |
FQXJ-25/160QH | ||||||||
FQXJ-25/160HH | ||||||||
FQXG-25/160QT | 850±20 | 1600 | 1692 | 612 | 160 | 310 | 190 | 150 |
FQXG-25/160QH | ||||||||
FQXG-25/160HH | ||||||||
FQXS-25/160QT | 840±20 | Pri./ Sec. | Pri./ Sec. | 505 | 160 | 270 | 160 | 130 |
FQXS-25/160QH | 1200/145 | 1273/167 | ||||||
FQXS-25/162HH | ||||||||
FQXSJ-25/160QT | 890±20 | Pri./ Sec. | Pri./ Sec. | 555 | 160 | 290 | 175 | 140 |
FQXSJ-25/160QH | 1400/145 | 1461/165 | ||||||
FQXSJ-25/160HH | ||||||||
FQXSG-25/160QT | 940±20 | Pri./ Sec. | Pri./ Sec. | 605 | 160 | 310 | 190 | 150 |
FQXSG-25/160QH | 1600/145 | 1671/195 | ||||||
FQXSG-25/160HH | ||||||||
Manufacturing Process for Composite Insulators

We could produce 200 pieces Tension insulator for electrified railway per day in one machine, and could use more machines if delivery time urgent and in big quantity.We have 9 injection machines could produce this item.
Inspection Before Shipment
Before dispatched, the goods will be performed routine test and sample test comply with related standards. In case damage during the transportation, each one’s sheds and housing will be checked thoroughly. Superficial defects of an area greater than 25 mm² (the total defective area not to exceed 0.2% of the total insulator surface) or of depth greater than 1mm.
Package
All composite insulators are packed in weatherproof containers in order to protect the products during land, air and sea transportation. Several different grades of packaging can be offered depending on the mode of transport and the expected storage conditions. The packaging options that we offer are:
1) Standard grade/prefabricated packing.
2) Economical grade/cardboard carton.
3) Best grade/closed wooden crate.
Each container shall be marked with the number of insulators it contains, the catalog number, the manufacturer’s name, and any other customer requests.
Each packing (wooden cases or crates) attached specification and certification of products.
Our factory
We are one of the top 8 manufacturers for composite tension insulator for electrified railway in China, and want to bring higher quality insulators to the whole world.




Since the establishment of our company, we have been focusing on the 160kv Composite Station Post Insulators field. We pay attention to every request made by customers, fully consider every detail, actively do a good job of service, and provide customers with a full range of product solutions. We always continually offer you the most conscientious purchaser services, and the widest variety of designs and styles with finest materials. As long as you explain the requirements, the rest is for us. We will give you satisfied products and provide a full range of after-sales service.
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