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Premium Transformer Porcelain Bushings & Insulators

High-performance electrical insulation solutions engineered for reliability, safety, and longevity in power transformers and substations worldwide.

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IEC & ANSI Certified

Compliant with international standards for safety and performance.

20+ Years Expertise

Backed by Tianjin Xingda Electric Technology Co., Ltd since 2017.

Global Export

Trusted by clients in North America, Europe, South America, and Asia.

About Tianjin Delda Trading Co., Ltd

Tianjin Delda Trading Co., Ltd is affiliated with Tianjin Xingda Electric Technology Co., Ltd, established in 2017 and located in the Tianjin Economic and Technological Development Zone, China. We specialize in the research, development, manufacturing, and global distribution of high-voltage transformer components.

Our core focus lies in porcelain and epoxy resin bushings, insulating materials, and critical transformer accessories that ensure the safe and efficient operation of electrical power systems. With a commitment to innovation and quality control, we serve utilities, OEMs, and industrial clients around the world.

Porcelain Bushings DIN/ANSI Standards Transformer Accessories Insulation Materials
Transformer Bushing Manufacturing

Our Product Range

Comprehensive selection of high-quality transformer components designed for durability, electrical insulation, and compliance with international standards.

Transformer Porcelain Bushing

Porcelain Transformer Bushing

High-voltage insulation for oil-immersed transformers, available in DIN, ANSI, and EN standards.

  • 10kV - 220kV Rating
  • Weather-Resistant Glaze
  • Anti-Arc Design
Epoxy Resin Bushing

Epoxy Resin Bushing

Lightweight, high-dielectric strength alternative to porcelain with excellent mechanical stability.

  • VDE & IEC Compliant
  • UV Resistant
  • Low Maintenance
DIN Bushing

DIN Standard Bushing

Precision-engineered to meet German DIN specifications for European markets.

  • DIN 42533 / 42534
  • Flanged Mounting
  • Copper Conductor Core
ANSI Bushing

ANSI Bushing

Designed for North American power grids, compliant with ANSI C57.19.00 standards.

  • ANSI C57.19.00
  • High Creepage Distance
  • Bolted Terminal
Oil Level Indicator

Oil Level Indicator

Precision gauge for monitoring transformer oil levels under varying temperature conditions.

  • Tempered Glass Window
  • Stainless Steel Body
  • -40°C to +100°C Range
Pressure Relief Valve

Pressure Relief Valve

Critical safety device that releases excess internal pressure during fault conditions.

  • Fast-Acting Diaphragm
  • Resettable Mechanism
  • IP55 Protection
Porcelain Insulators

Porcelain Insulators

High-mechanical strength insulators for outdoor switchgear and transmission lines.

  • 50kN to 300kN Strength
  • Pollution-Resistant
  • Double Skirt Design
Transformer Bushing Cover

Bushing Cover & Accessories

Protective covers, brass flags, and sealing kits for complete bushing systems.

  • UV-Stable Polymer
  • Sealing Gaskets Included
  • Anti-Tracking Surface
View Full Product Catalog

Why Choose Our Components?

Certified Quality

Holding utility model patents, invention patents, and international agent qualifications ensuring compliance and innovation.

Rigorous Testing

Each component undergoes dielectric strength, thermal cycling, and mechanical load testing before shipment.

Global Reach

Exported to over 50 countries with reliable logistics and after-sales support in multiple languages.

Custom Solutions

Capable of OEM/ODM production with custom dimensions, voltages, and mounting configurations.

200+
Product Variants
50+
Countries Served
99.7%
On-Time Delivery
15+
Years Experience

Frequently Asked Questions

What standards do your porcelain bushings comply with?

Our bushings are manufactured to meet international standards including IEC 60137, ANSI C57.19.00, DIN 42533/42534, and EN 50180, ensuring compatibility with global transformer designs.

Can you provide custom bushings for special voltage ratings?

Yes, we offer OEM/ODM services and can engineer bushings for specific voltage classes, creepage distances, and mechanical loads based on client requirements.

What is the typical lead time for bulk orders?

Standard lead time is 25–35 days after order confirmation. Expedited production and shipping options are available upon request.

Do you offer technical support and documentation?

Absolutely. We provide detailed product datasheets, installation guides, test reports (including type tests), and direct engineering support via email and WhatsApp.

Get in Touch

Reach out for product inquiries, technical specifications, or bulk order quotations.

Phone

+86 13662056855

+86 13032229684

+86 15902217413

Email

[email protected]

[email protected]

[email protected]

WhatsApp

+86 13032229684

+86 15902217413

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