Our 33kv polymer disc insulator, Composite polymer insulator, 69kV Composite Line Post Insulator is positioned with beautiful and reasonable design, novel style, fine workmanship and good quality. Our company is committed to continuous learning and growth, and invests heavily in the professional development of our employees. Our strict quality control measures ensure that our products are defect-free.
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.




To create more benefit for buyers is our business philosophy; shopper growing is our working chase for Railway Insulator Rail Apron Block. Our company's complete quality management system and honest business philosophy ensure the healthy development of the company. With advanced marketing concepts and scientific development strategies, we quickly established a strong customer network in the market, and established a good reputation of 'honoring contracts and keeping promises'.
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