Why Sourcing Oil Duct Spacers from Asia Makes Sense
Asia is home to some of the most advanced and cost-effective transformer spacer manufacturers in the world. Whether you’re sourcing for oil-immersed or dry-type transformers, Asia-based transformer spacer factories offer:
- 🛠 Lower manufacturing cost
- 🌐 IEC-certified pressboard and pre-compressed board
- 📐 CNC cutting for custom insulation spacer strips
- 🚢 Global export support (FOB, CIF, DDP)
- 🔁 Reverse engineering services and low MOQ support
These factories in Asia make custom insulation spacer strips. They also supply transformer oil duct strips for medium to high-voltage transformers.
Top Oil Duct Spacer Factories in Asia
1. Leadwin Insulation (China)
✅ 20+ years of export experience as a transformer spacer manufacturer
✅ Supplies CNC-cut transformer oil duct strips, vertical channel spacers, and wedge blocks
✅ SGS and IEC 60641-certified pressboard and pre-compressed materials
✅ Offers full drawing review, slotting, and pre-packed kits per transformer model
📍 Location: Ningbo, China
🌍 Main Export Markets: EU, Southeast Asia, Middle East, Africa
🧪 Core Services: CNC slotting, sample kits, DXF/DWG compatibility
🏷 Recommended for: Oil-immersed HV transformer builds with layered cooling channels
2. Paramount Intercontinental (India)
✅ Indian oil duct spacer supplier with focus on regional transformer OEMs
✅ Produces pressboard and pre-compressed insulation channel strips
✅ Supports standard and custom cut lengths
📍 Location: India
🌐 Export Focus: India + Southeast Asia
🔧 Services: Die-cutting, grooving, packing by coil type
🏷 Recommended for: Utility distribution transformers and regional OEM sourcing
3. Samhwa Electric Materials (South Korea)
✅ Specializes in dry-type transformer insulation channel blocks
✅ Provides advanced thermal shaping and lamination
✅ Strong engineering control and high-density insulation materials
📍 Location: South Korea
🌏 Main Clients: Japan, East Asia, selective EU partners
🧰 Services: Thermal-formed composite blocks, custom shaping
🏷 Recommended for: Class F dry-type coil projects with high spacer density
What to Expect from a Qualified Spacer Manufacturer
| Feature | What to Look For |
|---|---|
| Certification | IEC 60641, ISO 9001, SGS reports for pressboard compliance |
| Custom Processing | CNC slotting, chamfering, layout matching to winding design |
| MOQ & Sampling | Low MOQ (100 pcs) + free samples for drawing-based testing |
| Export Logistics | Vacuum-sealed packing, labeled pallets, container optimization |
| Engineering Support | Accepts DXF/DWG, assists with layout matching and spec alignment |
✅ Tip: Always choose a transformer oil duct strip supplier who can pre-sort and label kits per model — reducing install time and error risk.
Available Spacer Types & Specs
Product Type Description
Cooling Duct Strips: These are cut-to-length strips. They help create oil channels between windings.
Vertical Channel Spacers: These are grooved or notched strips. They control vertical oil flow.
Pressboard Wedge Blocks: These are chamfered pressboard blocks. They provide stable stacking.
Custom Spacer Kits: These are CNC-machined sets made for each coil model. They include slotting, rounded corners, and tabs.
🔩 Standard Specs:
- Thickness: 2mm–10mm
- Length: up to 2000mm
- Material: IEC 60641 pressboard, laminated paper, pre-compressed board
- Processing: CNC chamfering, slotting, reverse from sample
Still Not Sure Which Supplier Matches Your Specs?
Our sourcing experts help OEMs across 30+ countries match the right Asia-based transformer spacer factory based on:
- 🔌 Transformer voltage class (LV / MV / HV)
- 📐 Oil gap layout and spacer shape complexity
- 🌍 Preferred production origin (China, India, Korea)
- 🚚 Shipping lead time and customs requirements
Trusted by Global OEMs — Contact Us for Samples & Support
🛠 Trusted by over 30 transformer OEMs across Asia, MENA, and Europe for insulation spacer solutions.
🚚 Reliable global delivery with full export documentation and compliance.
📩 Ready to source precision-cut duct spacers from a certified Asian factory?
🔘 [Request a Factory Quote + Lead Time]
🔘 [Download Our CNC Spacer Catalog PDF]
Phone: +86-15958243831
Email: jessie.feng@sidanm.com
Whatsapp: https://wa.me/8615958243831
