High-Efficiency Solar Evacuated Tubes

Name: High-Efficiency Solar Evacuated Tubes
Brand: Shandong Longguang Tianxu Solar Energy Co., Ltd.
SKU: 1946987002

Shandong, ChinaShandong Longguang Tianxu Solar Energy Co., Ltd.

Negotiable

5,000 Pieces

Product profile

Customization

Available

After-sales Service

Provided

Warranty

1 Years

Condition

New

Type

Common Vacuum Tube

Certification

ISO, CE

Application

Water Heater, Solar Thermal

Pipe Material

Glass

Pressurized

Non-Pressure

Transport Package

Cartons

Specification

58*1800mm

Trademark

Tianxu or OEM

Origin

China

HS Code

8419

Production Capacity

500000 Pieces/Month

Key features

High Absorptivity Coating: Cu/SS-AIN selective coating achieves 0.93-0.96 absorptivity for maximum solar energy conversion.

Durable Borosilicate Glass: Constructed with high-strength borosilicate 3.3 glass for superior thermal shock and hail resistance.

Vacuum Insulation Technology: Evacuated air space between double glass tubes ensures minimal heat loss and high thermal efficiency.

Proven Market Reliability: Over 20 years of usage history in China with annual output of 16 million tubes.

Certified Quality Standards: Meets ISO and CE certifications ensuring safety and performance for global markets.

Custom Manufacturing Support: ODM and OEM services available to meet specific brand and design requirements.

Efficient Heat Transfer: Inner tube filled with heat transfer fluid directly connected to water storage for rapid heating.

Large Scale Production: Backed by 70 production lines and 10 electric furnaces ensuring stable supply capacity.

Company profile

Shandong Longguang Tianxu Solar Energy Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2003-09-01 CertifiedNearest Port: Qingdao PortAverage Response Time: >24h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShandong Longguang Tianxu Solar Energy Co., Ltd. is a China-based limited company established in 2002, with 406 employees and a large manufacturing site in Shandong. The supplier develops and manufactures solar water heaters, solar vacuum tubes, high-borosilicate glass tubes, heat pumps, photovoltaic products, and energy-storage systems. Evidence indicates substantial production infrastructure, including more than 10 production lines, 10 electric furnaces, 70 solar vacuum tube lines, and 3 solar water heater lines. It reports ISO9001:2015 and ISO14001:2015 certification, 72 R&D engineers, 50 quality-control staff, and cooperation involving Tsinghua-related organizations. Export activity is significant, with 71%–90% of sales reportedly from exports and markets including Southeast Asia and the Middle East. However, the provided information does not substantiate after-sales processes, customer case studies, customized manufacturing procedures, or financial reliability.

Supplier typeThe supplier is identified as a limited company based in Zhucheng, Weifang, Shandong, China, while one record categorizes it as a trade company. Its described activities and product range show substantial manufacturing involvement in solar thermal, glass, heat-pump, photovoltaic, and energy-storage products.

CertificationsThe supplier reports ISO9001:2015 and ISO14001:2015 certificates, along with other unspecified certifications. These explicitly support quality-management and environmental-management system credentials, although the unspecified certifications cannot be assessed further.

R&D capabilityThe supplier reports 72 R&D engineers, involvement with Beijing Tsinghua Industrial Development Institute and Beijing Tsinghua Solar Co., Ltd., advanced solar vacuum tube production lines, and work across solar heating, cooling, desalination, heat pumps, and photovoltaic systems. It also states that it drafted a national standard for 3.3 high-borosilicate glass, providing explicit evidence of R&D and technical-development capability.

Production capacityProduction capacity is supported by 406 employees, a 133,340 m² manufacturing plant, more than 10 production lines, 10 electric furnaces, 70 solar vacuum tube lines, and 3 solar water heater lines. The supplier also reports annual production of one million tons of high-borosilicate glass and 16 million solar vacuum tubes, plus lead times within 15 workdays in both off-peak and peak seasons.

Product Q&A

Q:What is the warranty period for the solar vacuum tubes?

We provide a 1-year warranty for our solar evacuated tubes.

Q:What material is used for the solar vacuum tubes?

The tubes are made from high-strength borosilicate 3.3 glass, consisting of an outer transparent tube and an inner coated tube.

Q:Can you provide OEM or ODM services?

Yes, we offer both OEM and ODM services to support custom branding and design needs.

Q:What are the payment terms and lead times?

Payment terms include LC, T/T, D/P, PayPal, Western Union, and small-amount payments. The average lead time is within 15 workdays for both peak and off-season.

Q:What certifications do the products have?

Our products are certified with ISO and CE standards.