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Evacuated Solar Vacuum Tube
US$4.00
100-599 Pieces
US$3.50
600-2,499 Pieces
US$2.20
2,500+ Pieces
Sample price:US$10.00/piece.Request sample
Product profile
Customization
AvailableAfter-sales Service
YesWarranty
5 YearModel NO.
58/1800Condition
NewType
Double Vacuum Heating TubeCertification
ISO, CEApplication
Water Heater, Solar ThermalPipe Material
GlassPressurized
PressurizedModel
58/1800Material
High Borosilicate Glass 3.3Inner Tube
47mm Diameter, 1.6mm ThickOuter Tube
58mm Diameter, 1.6mm ThickCoating
Three Target, Cu/Aln-Ss/AlnAbsorption Rate
0.93Emission Rate
0.04Weight
2.0kgsTransport Package
CartonSpecification
58/1800Trademark
RAVEN NEW ENERGYOrigin
ChinaHS Code
84199010Production Capacity
5000PCS/DayKey features
High Absorption Coating: Special selective coating with 0.93 absorption rate and 0.04 emission rate.
Durable Glass Material: Made from high borosilicate glass 3.3 with 47mm inner and 58mm outer tubes.
Proven Performance: Used for over 20 years in China with reliable heat retention in cold weather.
Certified Quality: Products certified with ISO and CE standards for safety and quality.
5-Year Warranty: Comprehensive 5-year warranty coverage for new condition products.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2020-02-04Nearest Port: ShanghaiAverage Response Time: ≤8.32hTerms of Payment: T/T, Western Union, Money GramInternational Commercial Terms(Incoterms): FOB, CIF, DDP
AI-Powered supplier vetting
SummaryChangzhou Raven New Energy Technology Ltd is identified as a Chinese manufacturer/factory specializing in solar energy products, including solar water heaters, collectors, panels, power systems, ovens, lighting, and inverters. The supplier reports ISO 9001 certification, an in-house research team, 6–10 years of R&D engineer experience, and 6–10 quality-control staff. It reports more than 10 production lines, lead times within 15 workdays in both peak and off-peak seasons, and exports to multiple global regions. The supplier also states that customized application development is important to its business. However, the provided information does not establish after-sales service procedures, financial credibility, or detailed customer references. Trade records show one transaction each involving curtain-related products and electric storage water heaters with a buyer in Kenya, indicating limited externally documented transaction history in the supplied data.
Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and describes itself as a producer and seller of solar energy-saving products. Its stated specialization includes solar systems and related products, which is consistent with a manufacturing-oriented supplier profile.
CertificationsThe supplier reports holding ISO 9001 certification for its management system. This provides explicit evidence of a documented quality-management certification, although no certificate scope, issuing body, or validity period is provided.
R&D capabilityThe supplier states that it maintains an in-house research team and emphasizes product development and design, with total R&D engineer experience reported at 6–10 years. These statements provide explicit evidence of R&D and development resources, although no patents, new-product records, or technical performance results are supplied.
Production capacityThe supplier reports more than 10 production lines, a 45,000-square-meter facility, more than 100 employees, and order fulfillment within 15 workdays in both peak and off-peak seasons. These stated facilities, staffing, production-line count, and lead times support a positive assessment of production capacity.
Customization capabilityThe supplier explicitly states that customized application development is essential for promoting solar rooftop and thermal applications and that it has emphasized in-house development. This supports the existence of customization-oriented development capability, though specific customization examples or execution limits are not provided.
Product Q&A
Q:What is the core function of this solar vacuum tube?
A:
It is the core part of a solar water heater that absorbs solar energy and converts it into heat for hot water heating.
Q:How does the vacuum insulation work?
A:
The air between the two glass layers is pumped out to form a vacuum, which acts as an excellent insulator to prevent heat loss.
Q:What material is used for the tubes?
A:
The tubes are made from extremely strong high borosilicate glass 3.3, with specific dimensions of 47mm inner and 58mm outer diameters.
Q:What is the absorption rate of the coating?
A:
The special selective coating features an absorption rate of 0.93 and an emission rate of 0.04.
Q:Does it perform well in cold weather?
A:
Yes, the excellent insulation properties allow it to perform well even in cold weather when flat plate collectors may lose heat.
Send Inquiry
*To:
Changzhou Raven New Energy Technology Ltd
Changzhou Raven New Energy Technology Ltd*Content:
Supplier replies will be sent to your registered email
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