How do you pack the insulation pressboard for export shipment?

Sheets are sealed by moisture-proof PE film with desiccant inside, then packed into IPPC-marked plywood cases on heavy-duty wooden pallets, suitable for long-sea transportation.

What is your annual production capacity?

Our annual production capacity reaches 5,500 tons, stable large-volume supply for bulk orders.

Can you provide OEM custom-shaped processed parts?

es, we can cut, mill, punch, bend the pressboard into various transformer insulation components such as strips, rings, supports and barriers.

Do your products comply with IEC & Chinese national standards?

All products are tested strictly according to GB/T 1984 and IEC 60641-3-1 standards. Inspection reports can be provided.

What types of equipment is this insulation board mainly used for?

Widely used for oil-immersed power transformers, distribution transformers, reactor, converter transformers and other high-voltage electrical equipment.

1-50mm Thick Electrical Insulation Pressboard Sheet for Power Transformer

Name: 1-50mm Thick Electrical Insulation Pressboard Sheet for Power Transformer
Brand: Xinyuan Technology (Tianjin) Co., Ltd.
SKU: 2313245075

Tianjin, ChinaXinyuan Technology (Tianjin) Co., Ltd.

US$5.19

200 kg

Product specifications

3000*1500

2000*1000

Product profile

Customization

Available

Application

Electrical Power System, Electronic Communication, Electrical Insulation Pressboard

Color

Brown

Model NO.

Custom-made according to drawings

Material

100% Sulphate Wood Pulp

Maximum Voltage

10kv-220kv

Thermal Rating

A 105

Thickness

0.5mm-50mm

Lead Time

7-10 Working Days

Transport Package

Mounted on Heavy-Duty Wooden Pallet, Firm Strappin

Specification

2000*1000*500/3000*1500*1000

Trademark

Xinyuan

Origin

Manufactured in Inland China

HS Code

4805500000

Production Capacity

5, 500 Tons Per Year

Key features

Made of 100% pure sulphate wood pulp, excellent high-voltage insulation performance

High-density hot-pressed structure, outstanding mechanical strength and compression resistance

Low moisture absorption & stable dimension, less shrinkage during long-term transformer operation

Great oil-resistance, perfectly compatible with oil-immersed power transformer insulating system

High dielectric breakdown strength, reliable insulation barrier for high-voltage equipment

Easy cutting, milling and machining, available to make all kinds of transformer insulation parts

Strict A-class thermal stability, suitable for continuous-working heavy-duty transformers

Flat & smooth sheet surface, no crack, impurity or deformation after high-temperature pressing

Customizable thickness & size, 0.5-50mm, OEM service for global transformer manufacturers

Factory direct supply, full inspection before delivery, cost-effective electrical insulation material

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Xinyuan Technology (Tianjin) Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 1 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤5.13h

About Our Factory & Business Background

AddressNo. 5, Erwei Road, Jingbao Sub-park, Tianjin Pharmaceutical & Medical Device Industrial Park, Beichen District, Tianjin, P. R. China

Plant Area2000 square meters

Number of Employees6

Registered Capital1,000,000 RMB

Terms of PaymentLC, T/T, D/P, PayPal, Western Union, Small-amount payment

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity200 Kg

Supply Chain Partners5

Our Production Capability & Technical Expertise

Main ProductsTransformer Insulating Materials

Production Lines1

Production MachinesCNC engraving machine, Cutter saw, Flat plate pulling machine, Numerical Control Machining Center, Precision sliding saw

QA/QC inspectors1 people

Inspection Type for Finished ProductsRandom inspection(Visual inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

R&D Engineers1 people

Traceability of Raw MaterialsNo

Our Industry Experience & Global Business Record

Year of Establishment2026-03-09

Main MarketsDomestic

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff2

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:What material is your transformer insulation pressboard made of?

It is produced from 100% pure sulphate wood-pulp, no recycled paper, high-purity raw material for oil-immersed transformers.

Q:What is its thermal-resistance temperature class?

Class-A insulation grade, long-term working temperature up to 105degrees Celsius.

Q:What's the maximum transformer voltage level this pressboard can support?

Standard products are suitable for 110kV-500kV transformers. High-density pre-compressed version can be used for 750kV & HVDC converter transformers.

Q:What thickness ranges can you supply?

Available thickness: 0.5mm-45mm. Custom cutting & CNC machining services are offered.

Q:What is your standard production lead-time?

Standard lead-time is 7-10 working days after receiving your deposit.

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