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3520 Phenolic Paper-Base Laminated Tube
The 3520 Phenolic Paper-Base Laminated Tube is an insulating structural component fabricated from phenolic resin and insulation paper, designed for use in electrical apparatus such as transformers. Its primary function is to provide mechanical strength and dielectric stability in dry conditions or when submerged in transformer oil. The tube’s brown color is standard for phenolic laminates, which are recognized for their durability and resistance to electrical breakdown.
This material meets IEC and UL standards for electrical insulation, ensuring compliance with international safety and performance requirements. Typical phenolic paper laminates in this category exhibit a dielectric strength of 15 to 25 kV/mm and a flexural strength of 100 to 150 MPa, with standard tolerances of ±0.2mm for inner and outer diameters. The 3520 designation often refers to a tube with an outer diameter of 35mm and an inner diameter of 20mm, though exact dimensions should be confirmed with the supplier.
Industries such as power distribution, electrical manufacturing, and transformer assembly rely on these tubes for structural support and insulation. Trade terms typically include MOQs starting at 100 units, with packaging optimized for bulk shipment. Buyers should verify compatibility with their specific voltage and environmental conditions, as phenolic materials can degrade under prolonged exposure to moisture or extreme temperatures.
| Base Materials | Insulation paper, phenolic resin |
| Dielectric Property | Good under dry state |
| Mechanical Strength | Good (structural grade) |
| Color | Brown |
| Standards | IEC, UL |
| Application | Insulating structural parts of electrical apparatus in transformer oil |
| Dielectric Strength (typical) | 15 - 25 kV/mm |
| Flexural Strength (typical) | 100 - 150 MPa |
| Diameter Tolerance (typical) | ±0.2mm |
| Standard Dimensions (typical) | Outer diameter 35mm, inner diameter 20mm |
Ztelec Group is based in Zhengzhou, Henan Province, China, with its address listed at No. 279 Third West Ring. The company specializes in the production of electrical insulation materials, including phenolic paper-based laminates, catering to industries such as power distribution and transformer manufacturing. Its location in central China provides access to major transportation networks for domestic and international shipments.
The supplier holds a harbor trust tier, though current response metrics are not available. The company’s product range focuses on standard and custom insulating components, adhering to IEC and UL standards. No additional details on production scale, certifications beyond IEC/UL, or client references are provided, so buyers should request these directly for validation.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Sourcing 3520 Phenolic Paper-Base Laminated Tube from Ztelec Group - China Import Guide
Before placing an order, confirm the tube’s dielectric strength and flexural strength values to ensure they meet your application’s electrical and mechanical demands. Request third-party test reports or certifications for IEC and UL compliance, as these are essential for validating performance in high-voltage environments.
Discuss logistics details such as lead time, which can range from 2 to 6 weeks for standard phenolic tubes from China. Incoterms like FOB Qingdao or CIF to your port are common, but clarify who covers insurance and freight costs. Payment terms often require a 30% deposit, with the remainder due before shipment, though this may vary by order size.
Quality checks should include visual inspection for surface defects, dimensional verification using calipers, and dielectric strength testing under controlled conditions. Request the supplier’s inspection reports and material certificates to ensure traceability. For critical applications, consider independent lab testing to validate performance against your specifications.
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30 suppliersBuy 3520 Phenolic Paper-Base in Bulk — Supplier in China
When sourcing 3520 Phenolic Paper-Base Laminated Tube for your business, securing the right balance of quality and cost is essential. Ztelec Group, a supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Electric Components sector with strong demand from importing countries worldwide.
3520 Phenolic Paper-Base Specifications, Trade Terms & Pricing
Importing 3520 Phenolic Paper-Base requires careful attention to shipping logistics, customs compliance, and secure payment terms. Ztelec Group offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
About Ztelec Group — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this 3520 Phenolic Paper-Base for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the Electric Components category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import 3520 Phenolic Paper-Base — Shipping, Logistics & Customs
Importing 3520 Phenolic Paper-Base requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About 3520 Phenolic Paper-Base
What is the wholesale price of 3520 Phenolic Paper-Base Laminated Tube?
The current listed wholesale price for 3520 Phenolic Paper-Base Laminated Tube from Ztelec Group is $1/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Ztelec Group through EximNext.
What is the Minimum Order Quantity (MOQ) for 3520 Phenolic Paper-Base?
The supplier, Ztelec Group, has set a Minimum Order Quantity (MOQ) of 1 Bags for 3520 Phenolic Paper-Base. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for 3520 Phenolic Paper-Base Laminated Tube?
The HS Code classification for 3520 Phenolic Paper-Base Laminated Tube depends on the specific grade and form. Contact Ztelec Group through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import 3520 Phenolic Paper-Base from China?
To import 3520 Phenolic Paper-Base from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Ztelec Group. Ensure you have the necessary import licenses for Electric Components products in your destination country.
How can I check Ztelec Group before ordering?
Open the Ztelec Group company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of 3520 Phenolic Paper-Base Laminated Tube?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Ztelec Group through EximNext.
What packaging options are available for bulk orders of 3520 Phenolic Paper-Base?
Ztelec Group offers 3520 Phenolic Paper-Base with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import 3520 Phenolic Paper-Base the most?
3520 Phenolic Paper-Base is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Ztelec Group through our platform.
What certifications does this 3520 Phenolic Paper-Base supplier hold?
Ztelec Group maintains international quality certifications. These ensure that the 3520 Phenolic Paper-Base meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for 3520 Phenolic Paper-Base Laminated Tube on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Ztelec Group will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Ztelec Group.
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