What are the payment terms?

We accept payment via T/T (Telegraphic Transfer).

What is the lead time for production?

The average lead time is 1-3 months, depending on the season and order volume.

What is the dry arcing distance for the 57-4 model?

For the 57-4 model, the dry arcing distance is 368mm.

China Suppliers 57-4 Vertical Post Ceramic Insulator for Transmission Line Support

Name: China Suppliers 57-4 Vertical Post Ceramic Insulator for Transmission Line Support
Brand: Jiangxi QOCI Electric CO.,LTD.
SKU: 2246266225

Jiangxi, ChinaJiangxi QOCI Electric CO.,LTD.

US$3.00-5.00

50 Pieces

Product profile

Application

High-voltage, High-temperature

Material

Porcelain

Structure

Post Insulator

Model NO.

ANSI 57-4

Type

A Type Insulator

Usage

High Voltage Power Transmission, Insulation, Electrical Installation

Connection Method

Spherical Type

Size of Bearing Capacity

12.5kN

Certification

ISO9001

Color

Brown

Brand

Qoci

Transport Package

Wooden Box Packaging

Specification

14.26kg

Trademark

QOCI

Origin

China

HS Code

8546209090

Production Capacity

50000

Key features

High Mechanical Strength: Cantilever strength of 12.5kN ensures reliable support for transmission lines.

Superior Insulation Performance: Dry arcing distance up to 438mm and flashover voltage up to 380kV for safety.

Durable Porcelain Material: Made of high-quality porcelain, suitable for high-voltage and high-temperature environments.

ISO Certified Quality: Manufactured under ISO9001:2015, ISO45001:2018, and ISO14001 management systems.

Custom Design Support: Offers customization options based on specific client designs and requirements.

Wide Application Range: Ideal for high voltage power transmission, insulation, and electrical installation.

Professional Manufacturer: Established in 2002 with 207 employees and 30 QA/QC inspectors for quality assurance.

Flexible Shipping Terms: Supports FOB, CIF, and EXW terms with reliable export experience.

Company profile

Importers and ExportersCooperated with Fortune 500Customization from DesignsManagement Certification

Jiangxi QOCI Electric CO.,LTD.

Jiangxi, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Designs CertifiedExport Year: 3 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤1.70h CertifiedTerms of Payment: T/T

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 207 employees offering glass, porcelain, and other insulators for transmission-line insulation, suspension, support, and conductor applications. It holds ISO9001:2015, ISO45001:2018, and ISO14001 certifications. Quality resources include 30 inspection staff, 18 items or sets of quality-control test equipment, seven R&D engineers, documented R&D records, and standardized finished-product inspection instructions. The supplier supports design customization and 3D software design, but does not provide ODM, SDK, or popular-brand OEM services and launched no new products in the last year. Service procedures, complaint handling, and corrective-action records are documented. International service infrastructure is limited: it reports no overseas warehouses, showrooms, agents, branches, or offline trade-show participation, and offers overseas services in zero countries. Financial evidence is insufficient for assessment because the slices provide years rather than financial...

Supplier typeThe supplier is a limited company with 207 employees and no stated parent company or larger corporate group. Its product scope includes glass, porcelain, and other insulators, primarily for transmission-line insulation, suspension, support, and conductor applications, indicating a specialized industrial manufacturer.

CertificationsThe supplier holds ISO9001:2015, ISO45001:2018, and ISO14001 certificates, covering quality, occupational health and safety, and environmental management systems. These are explicit certifications relevant to controlled manufacturing operations.

After-Sales capabilityThe supplier has seven R&D engineers whose responsibilities include technical support for production and after-sales service, and it maintains documented procedures and records for service assessment, corrective and preventive actions, and customer complaints. However, it reports no overseas warehouse, showroom, agent, branch, or overseas service coverage, so the evidence supports structured service processes but limited overseas infrastructure.

Production capacityProduction-related controls include 30 quality-control inspection staff, 18 quality-control test equipment items or sets, documented and uniformly followed finished-product inspection instructions, and a product range covering multiple insulator types. The slices do not provide production capacity, factory area, machinery count, or output figures, so overall production scale cannot be fully judged, although established quality-control resources are explicitly demonstrated.

Customization capabilityThe supplier explicitly offers customization from customer designs and provides 3D software design services. These statements support the ability to adapt products or designs to customer requirements, although the slices do not define the customization range, engineering limits, or delivery performance.

Client casesThe supplier reports cooperation with Fortune 500 companies and a repeat-buyer preference rate of 30%–50%. These are direct indicators of customer experience and recurring demand, although no customer names, project descriptions, or verification details are provided.