Import Evacuated Vacuum Tube — Buy in Bulk from Supplier in China
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Evacuated vacuum tube
The evacuated vacuum tube from Qingdao Allrise Import & Export Co., Ltd. is manufactured from low-iron borosilicate glass with a selective solar absorber coating, designed for high thermal efficiency in solar collector systems. The tubes are engineered to minimize heat loss through a high-vacuum cavity, with outer diameters typically measuring 58mm and lengths of 1800mm. These dimensions align with common industry standards for commercial solar thermal applications.
The glass has a low iron content to maximize solar transmittance, and the absorber coating is typically made from aluminum nitride or titanium nitride for durability. The inner surface is treated to reduce emittance, improving retention under partial shading. These tubes are compatible with both direct flow and heat pipe collector designs, and are commonly used in systems operating between 5°C and 120°C.
Buyers include manufacturers of solar water heaters, pool heating systems, and industrial process heat units. The product is shipped in bulk, packed in corrugated cartons with foam spacers to prevent breakage. MOQ is flexible, with options for pallet-sized shipments or container loads. Trade terms include FOB Qingdao and CIF, with payment via T/T or L/C accepted.
| Tube outer diameter | 58 mm |
| Tube length | 1800 mm |
| Glass material | Low-iron borosilicate |
| Absorber coating | Aluminum nitride or titanium nitride, typical for commercial tubes |
| Typical vacuum pressure | Below 5×10⁻³ Pa, standard for high-efficiency tubes |
| Typical solar absorptance | 0.93 to 0.96, standard for selective coatings |
| Typical thermal emittance | 0.05 to 0.08, standard for low-emittance surfaces |
| Typical operating temperature range | 5°C to 120°C, standard for solar thermal systems |
| Typical heat loss coefficient | 0.6 W/m²·K, standard for Class A vacuum tubes |
| Typical wall thickness | 1.2 mm, standard for durable borosilicate tubes |
Qingdao Allrise Import & Export Co., Ltd. is based in Qingdao, Shandong Province, China, and functions as an exporter of solar thermal components. The company is categorized as an imported supplier with harbor trust tier, indicating compliance with export documentation and shipping protocols. The listing provides no details on manufacturing capacity, quality control systems, or years in operation.
There is no evidence of in-house production, lab testing, or certification of materials. The supplier appears to act as a trading intermediary sourcing from multiple manufacturers. Buyers should not assume product consistency across batches without prior sample approval. Response metrics show no recorded communication history, indicating potential delays in buyer support.
| 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 Evacuated vacuum tube from Qingdao Allrise Import & Export Co., Ltd. - China Import Guide
Verify the tube dimensions, glass composition, and absorber coating type before placing an order. Request physical samples to test for visual defects, coating uniformity, and end cap integrity. Confirm that the supplier can provide a material compliance certificate for borosilicate glass and the absorber layer. Do not accept claims without supporting documentation.
Confirm the Incoterms - FOB Qingdao is standard. Lead time is typically 15 to 25 days after deposit, but delays can occur without prior confirmation. Payment terms are usually 30% advance with balance against shipping documents. Always require a commercial invoice with accurate HS code 8514.40 and a packing list matching the shipment contents.
Conduct pre-shipment inspection using a thermal imaging camera to detect vacuum leaks. Check for scratches on the outer glass surface and ensure end caps are tightly sealed. Request a test report for vacuum retention and absorptance. Packaging must include corner protectors and moisture-proof lining. Reject any shipment with broken tubes or damaged cartons.
Active buying requirements from importers looking for Similar products
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30 suppliersBuy & Import Evacuated Vacuum Tube — Wholesale Supply from China
Securing a reliable supply chain for Evacuated Vacuum Tube is critical for maintaining your business operations. Qingdao Allrise Import & Export Co., Ltd., a verified supplier located in China, provides high-quality Evacuated Vacuum Tube ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the Products industry, catering to distributors, wholesalers, and importers worldwide.
Request Wholesale Pricing & Bulk Trade Terms
Navigating the complexities of global sourcing is easier when you have direct access to the right manufacturers and exporters. When importing Evacuated Vacuum Tube from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Qingdao Allrise Import & Export Co., Ltd.. This seamless communication is powered by EximNext, a premier import export marketplace that connects ambitious buyers with verified global sellers across every major industry.
About Qingdao Allrise Import & Export Co., Ltd. — Verified Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Qingdao Allrise Import & Export Co., Ltd. is part of our extensive network of vetted international exporters. Browse more products in the Related category or discover new suppliers across the Products sector. Expand your sourcing capabilities through our trusted online B2B marketplace — the import export marketplace built for serious international trade.
International Shipping & Import Guidelines for Evacuated Vacuum Tube
When importing Evacuated Vacuum Tube from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About Evacuated Vacuum Tube
How can I get the wholesale price for Evacuated Vacuum Tube?
Click the "Request Quotation" button to contact Qingdao Allrise Import & Export Co., Ltd. directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Evacuated Vacuum Tube in bulk from China?
Yes, Qingdao Allrise Import & Export Co., Ltd. provides Evacuated Vacuum Tube for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Qingdao Allrise Import & Export Co., Ltd.. Contact the supplier to discuss the best logistics options for importing Evacuated Vacuum Tube to your country.
How do I request a sample of Evacuated Vacuum Tube?
Send a direct message to Qingdao Allrise Import & Export Co., Ltd. through our platform to request a product sample before committing to a large wholesale order.
Is it safe to source products from this supplier?
Qingdao Allrise Import & Export Co., Ltd. is a registered and verified supplier on EximNext. We recommend using our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Evacuated Vacuum Tube?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Qingdao Allrise Import & Export Co., Ltd..
Does Qingdao Allrise Import & Export Co., Ltd. offer custom packaging or private labeling?
Many suppliers on EximNext, including Qingdao Allrise Import & Export Co., Ltd., offer custom packaging and private label options for bulk wholesale orders.
What payment methods are accepted for international orders?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services.
Can I find more Products suppliers on EximNext?
Yes, EximNext hosts a wide network of verified Related manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Qingdao Allrise Import & Export Co., Ltd. for a bulk trade inquiry?
Click "Request Quotation" or "Contact Supplier" on this page. Include your required quantity, destination country, and preferred shipping terms. All communications are managed securely through our import export marketplace.
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