What is the warranty or quality guarantee?

We perform 100% inspection on finished products (visual and function) and provide traceability for raw materials.

What are the main application scenarios?

They are mainly used for high-speed railway and urban light rail transportation construction, especially in tunnels.

What is the rated mechanical tensile load?

The rated mechanical tensile failure load varies by model, with options such as 100(120)KN and 160KN available.

21kv Composite Post Insulator for Electrified Railway

Name: 21kv Composite Post Insulator for Electrified Railway
Brand: Zhejiang Haivo Electrical Co., Ltd.
SKU: 1966386715

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 offers excellent hydrophobicity and pollution flashover resistance, eliminating regular cleaning needs.

High Mechanical Strength: ECR fiberglass rod provides tensile strength >1200Mpa, ensuring high load bearing capacity and fatigue resistance.

Corrosion Resistant Structure: Stainless steel or hot-dip galvanized support arms ensure durability against humidity, acid rain, and harsh climates.

Reliable Sealing Technology: Internal radial multi-seal structure and integral molding minimize interface risks, guaranteeing long-term seal reliability.

Customizable OEM/ODM Service: Special designs available according to customer requirements, supporting OEM and ODM customization from samples.

Certified Quality Assurance: Manufactured under ISO9001:2015 with 100% finished product inspection, meeting IEC, ANSI, and GB standards.

Low Maintenance Requirements: Good anti-fouling ability and durability significantly reduce the workload of cleaning and maintenance operations.

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: ≤4.11h

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.