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Phenolic Cotton Tube
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  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
  • Phenolic Cotton Tube
Phenolic Cotton Tube

Phenolic Cotton Tube

The Phenolic Cotton Tube is manufactured from high-quality cotton fabric impregnated with phenolic resin. Through precise processes of heat-rolling, tightening, baking, and curing, this tube achieves excellent electrical and mechanical properties. It is highly suitable for use as an insulation structural part in both mechanical and electrical equipment.

Surface Treatments & Features To meet diverse environmental requirements, the tube surface is available in both varnished and non-varnished treatments. The varnished surface specifically improves the material's performance and reliability under high-humidity conditions.

Standards and Classifications We manufacture Phenolic Cotton Tubes that strictly comply with international standards:

  • GOST Standard: 3520

  • IEC Standard: PFCC41, PFCC42, PFCC43

  • NEMA Standard: C, CE, L, LE

Basic Specifications

  • Wall Thickness: Minimum 3mm

  • Standard Length: 1000mm

  • Available Colors: Brown, Black, Natural
CNC Machining & Customization Capabilities
  • Custom Machining Scope: Custom cut-to-size panels and CNC components based on drawings (PDF, DWG, STEP).
  • Max Equipment Processing Area: Up to 2500mm × 2500mm (facility equipment limit).
  • Machining Thickness: Machinable thickness strictly per raw material stock limits or custom stacked/molded specs.
  • Machining Accuracy: Standard tolerance ±0.1mm; Precision tolerance up to ±0.02mm.
Quality Certificates & Compliance
  • ISO 9001 Certification: Certificate No. 04425Q10157R2S (Valid to Feb 17, 2028)
  • UL Recognition: UL File No. E538818
Ordering & Logistics Information
  • Minimum Order Quantity (MOQ):
    • Sheets & Rods: 500 kg
    • Tubes: 100 kg
    • CNC Machined Parts: 100 pcs
  • Lead Time: Quoted individually per project specifications and order volume.
  • Samples: Material samples are available upon request for testing and evaluation.

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Frequently asked questions
Which international standards does your material comply with?

Our materials comply with IEC, NEMA, DIN, ASTM, and UL standards. We provide direct equivalents to NEMA grades (e.g., G10, FR4, G11, G7, GPO-3) and IEC EPGC series.
Do you provide custom CNC machining services based on drawings?

Yes. Operating over 100 CNC machining centers, we manufacture custom-shaped parts from your drawings (PDF, DWG, STEP) with machining accuracy up to ±0.05mm.
Under which quality management system do you operate?

Production runs under an ISO 9001 compliant quality system. In-house test reports for electrical, mechanical, and thermal properties as well as CoC certificates are available upon request.
What is your Minimum Order Quantity (MOQ) and lead time?

Our products are manufactured at our Beijing production facility. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
How much does shipping cost?

Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.

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