What is the nitrogen content of the paper?

The nitrogen content is strictly controlled between 1.0% and 1.8% to ensure optimal insulation properties.

Can you supply standard grade paper instead of TU DDP?

Yes, normal grade diamond dotted paper (105 degree) is also available upon request.

What is the inner diameter of the roll?

The standard Roll ID (Inner Diameter) is 76mm.

Thermally Upgraded Diamond Dotted Paper Tu DDP for Transformer Insulation

Name: Thermally Upgraded Diamond Dotted Paper Tu DDP for Transformer Insulation
Brand: Starrysky Industrial (Shanghai) Co., Ltd.
SKU: 2111753775

Shanghai, ChinaStarrysky Industrial (Shanghai) Co., Ltd.

US$3.00-5.00

1,000 kg

Sample price:US$10.00/kg.Request sample

Product profile

Customization

Available

Application

Transformer, Electrical Winding Insulation, Transformers

Color

Brown

Model NO.

TU-DDP

Material

Paper

Maximum Voltage

20KV~100KV

Thermal Rating

B 130

Type

Insulation Paper

Chemistry

Organic Insulation

Classification

Organic Insulating Material

Certification

ISO9001

Brand

Caterlinx

Transport Package

Cartons

Specification

0.08mm, 0.127mm, 0.18mm, 0.25mm, 0.38mm, 0.50mm

Trademark

CATERLINX

Origin

China

HS Code

4811599000

Production Capacity

2000kgs/Month

Key features

High Thermal Stability: Rated for B 130 thermal class with a maximum working temperature of 130 degrees Celsius.

Customizable Dimensions: Roll width and outer diameter (OD) are fully customizable to meet specific transformer requirements.

Specialized Dotted Design: Features diamond dotted surface structure to enhance oil flow and cooling efficiency in transformers.

Wide Voltage Application: Suitable for oil-immersed distribution transformers with voltage ratings from 20KV to 100KV.

Certified Quality: Manufactured under ISO9001 certification and complies with IEC60641-3-2:2007 standards.

Optimal Nitrogen Content: Controlled nitrogen content between 1.0-1.8% ensures superior insulation performance and durability.

Multiple Thickness Options: Available in various thicknesses including 0.08mm, 0.127mm, 0.18mm, 0.25mm, 0.38mm, and 0.50mm.

Global Export Capability: Exported worldwide with flexible shipping terms including FOB, CIF, and DDP from Shanghai port.

Company profile

Starrysky Industrial (Shanghai) Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2015-02-01Nearest Port: Shanghai, Ningbo, XingangAverage Response Time: ≤18hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryThe supplier is identified as Starrysky Industrial (Shanghai) Co., Ltd., a China-based limited company described as both a trading company and manufacturer/factory. The available evidence shows OEM and ODM capability, full customization, 3D design services, recent new-product activity, raw-material traceability, and 100% finished-product inspection. It offers overseas service through agents or branches and provides debugging and maintenance services in India, but has no overseas warehouse or showroom and no recorded offline trade-show participation. Service procedures exist for supplier assessment, corrective actions, and complaints, yet written records are absent. Financial information is limited to year labels rather than performance figures, so financial credibility cannot be assessed. No certification information is provided. Customer references are limited to a separate company description stating service to more than 200 worldwide customers, and the relationship to the named supplier is not...

Supplier typeThe supplier is identified as Starrysky Industrial (Shanghai) Co., Ltd., headquartered in Shanghai, China, and classified as both a trading company and manufacturer/factory. Its listed product is transformer porcelain bushings, while the registration date shown is January 2025.

R&D capabilityThe supplier reports full-customization R&D design capability, 3D software design services, ODM availability, and at least one new product within the past year. It does not provide an SDK, but that limitation does not negate the demonstrated product-development capabilities.

Production capacityThe supplier is described as both a manufacturer/factory and trading company and offers transformer-related materials or products. Evidence of raw-material traceability, 100% finished-product inspection, and standardized inspection instructions supports production and quality-control capability, although production capacity is not stated.

Customization capabilityThe supplier explicitly offers full customization for design and R&D services, supported by 3D software design and ODM services. This is direct evidence of capability to develop customized components or products.