Are these insulators suitable for use in tunnels?

Yes, they are specifically suitable for electrified railway tunnels with complex operating conditions and small clearance, where porcelain insulators cannot be used.

What certifications does the product hold?

The product is certified under ISO9001 and complies with international standards such as IEC, ANSI, and GB.

21kv 160kn Electrified Railways Composite Insulators

Name: 21kv 160kn Electrified Railways Composite Insulators
Brand: Zhejiang Haivo Electrical Co., Ltd.
SKU: 1966254975

Zhejiang, ChinaZhejiang Haivo Electrical Co., Ltd.

US$1.00-20.00

2 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Application

High-voltage

Material

Composite Polymer

Model NO.

FQX

Structure

Suspension Insulator

Type

B Type Insulator

Usage

High Voltage Power Transmission, Insulation

Connection Method

Trough Type

Size of Bearing Capacity

550KN

Certification

ISO9001

Color

Grey

Brand

Haivol

Transport Package

Carton

Specification

111

Trademark

HAIVOL

Origin

China

HS Code

3917310000

Production Capacity

20, 000PCS

Key features

Compact & Lightweight Design: Small size and light weight make it ideal for tunnels with limited clearance, replacing porcelain/glass insulators.

Superior Anti-Fouling Performance: Silicone rubber housing provides excellent hydrophobicity and pollution flashover resistance, eliminating regular cleaning.

High Mechanical Strength: ECR fiberglass rod with tensile strength >1200Mpa ensures high mechanical integrity and fatigue resistance.

Corrosion Resistant Structure: Stainless steel or hot-dip galvanized cast steel support arms resist acid rain and humidity corrosion.

Reliable Sealing Technology: Internal radial multi-seal structure and vulcanized injection molding minimize interface leakage risks.

Customizable OEM/ODM Service: Supports special design according to customer requirements and customization from samples.

Wide Application Scope: Suitable for high-speed railways, urban light rail, and complex tunnel conditions under various climates.

Certified Quality Assurance: Manufactured under ISO9001:2015 with 100% finished product inspection for visual and functional quality.

Company profile

High Repeat Buyers ChoiceImporters and ExportersYears of Export ExperienceExhibition Experience

Zhejiang Haivo Electrical Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 14 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤4.12h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined manufacturing, processing, and sales business in Yueqing, Wenzhou, focused on power-distribution and insulation products. It has valid manufacturing-capacity contracts with associated subcontractors, five production lines, documented inspection procedures, and stated annual output across surge arresters, power fittings, switches, insulators, and fuse cutouts. Quality systems include one listed QA/QC inspector, written corrective-action and complaint-handling procedures, and quality assurance. The supplier provides ODM, OEM, sample-based customization, and an SDK, but reported no new products during the past year. It lacks inventory, overseas warehouses, overseas agents or branches, and overseas showrooms; it has participated in the Dubai Exhibition. Financial records are identified for multiple years, but their results are not provided. No certification information or specific customer cases are documented.

Supplier typeThe supplier is described as a combined company with a business scope covering manufacturing, processing, and sales of power-distribution switch control equipment, insulation products, fuses, lightning arresters, transformers, wires, and cables. Its company nature is separately recorded as a trading company, so the available records indicate a mixed manufacturing/trading profile rather than a purely manufacturing entity.

After-Sales capabilityThe supplier has documented procedures and followed records for handling customer complaints and corrective/preventive actions, indicating an established service-response process. However, it lacks in-stock service capacity, overseas warehouses, overseas agents or branches, and overseas showrooms, while its overseas service coverage is recorded as zero countries.

R&D capabilityThe supplier has an available SDK and provides ODM services, demonstrating some product-development and design-service capability. Nevertheless, it explicitly reported no new products during the past year, which limits evidence of recent innovation activity.

Production capacityThe supplier has valid manufacturing-capacity contracts with associated subcontractors, operates five production lines, and reports substantial annual production quantities across five product categories. Finished-product inspection follows written and uniformly applied instructions, although only one QA/QC inspector is listed and the quality-control staff count is recorded as fewer than five.

Customization capabilityThe supplier offers ODM services, OEM capability for popular brands, and design customization from samples. These explicit service offerings support a demonstrated ability to adapt products to customer or brand requirements.

Product Q&A

Q:What are the main advantages of composite insulators for electrified railways?

They feature compact structure, light weight, strong integrity, and excellent anti-fouling ability. They require no regular cleaning and effectively prevent pollution flashovers.

Q:Can the insulators be customized for specific railway projects?

Yes, we offer OEM and ODM services. Special designs can be created according to customer requirements, and customization is available from samples.

Q:What materials are used for the support arm and housing?

The support arm is made of stainless steel or hot-dip galvanized cast steel for anti-corrosion. The housing is silicone rubber with good hydrophobicity and insulation properties.

Q:What is the minimum order quantity (MOQ) for these insulators?

The minimum order quantity is 1 Set.

Q:What are the payment terms and lead times?

Payment terms are LC or T/T. The average lead time is one month for both peak and off-peak seasons.