CE, ISO, Keymark, five years warrranty, 6years exportexperience, manufacturer since 2000 Contact us

1. Qal solar water heater advantages:
1>CE, ISO. Five years warranty, long life span
2>Most competitive price and high quality
3>Quality assurance comply with ISO 9001-2008
4>Product quality in compliancee with CE
5>Fast delivery and rich export experience
6>OEM and ODM service

2. QAL solar water heaterheating/collector tube details:
1>QAL solar water heater/heating/collector tube structure:All-glass double deck co-axial structure
2>Tube size of our solar water heater/heating/collector:58*1800mm, or 47*1500mm
3>Our solar water heater/heating/collector glass material: Highorosilicate 3.3 glass
4>QAL solar water heater/heating/collector tuter tube diameterand glass thickness: Ø 58± 0.7mm; Glass thickness 1.6± 0.15mm
5>Inner tube diameter and glass thickness: Ø 47± 0.7mm; Glassthickness 1.6± 0.15mm
6>Absorptive coating property:
*Structure: Cu/SS-ALN(H)/SS-ALN(L)/ALN
*Sediment method: Three targets magnetron sputtering plating
*Specific absorption: 0.93-0.96(AM1.5)
*Emission ratio: 0.04-0.06(800C± 50C)
*Vacuum tightness: 5.0× 10¯ ³ PA
*Idle sunning property parameters: 260-300 m² . C/KW
*Average heat loss coefficient: ULT=0.4~0.6W/(M 2.0 C)
*Resistant Hail≤ 25mm
*Useful life15 years

3. QAL solar water heater/heating/collector tank details:
1>Our solar water heater/heating/collector tank size:
Out tank diameter: 460mm, 470mm, 500mm or customized
Inner tank diameter: 360MM, 370mm, 400mm or customized
2>Material of QAL solar water heater/heating/collector:
Out tank: Stainless steel: SUS201, 304
Inner tank: Stainless steel SUS304-2B
3>Tank insulatiing layer of QAL Solar waterheater/heating/collector: 50mm-60mm wtih high density orcustomized.
4>Welding of QAL Solar water heater/heating/collector: Argon arcwelding
5>Our solar water heater/heating/collector tank structure:Inlet, outlet(at both oppsote sides), drain(at bottom) & airvent(at top) connections3/4 inch BSP diameter& protective TIGwelded with inner tank.

4 QAL solar water heater/heating/collector bracket:
1>Our solar water heater/heating/collector bracket material:Stainless steel, pre-coated galvanized steel, AL-alloy or stainlesssteel, optional
2>QAL solar water heater's/heating/collector bracket angle: 22,38, 45 optional, pitched roof, flat roof optional
3>fastening pieces of our solar water heater/heating/collector:Stainless steel nut bolt.
4>QAL solar water heater's/heating/collector tube end support:Tube end support embossed in support structure

5. Brief introduce of Redao solar waterheater/heating/collector

From its early beginnings in 2000 Redao solarwater/heating/collector heater (originally called AlinsidunTechnologies) is a designer and manufaturer of solar water heatingprodcts in China. All of our products are designed to ensure robustperformance over a long lifespan. All Redao solar water heaters arecomplied with CE, ISO9001-2008. QAL is Redao trademake

With our dedicated and experienced solar waterheater/heating/collector technical team, our specialised solarwater heater/heating/collector manufacturing base, as well as thecontinued focus on solar water heater/heating/collector technicalsolutions and customer service, we are sure that Redao solar waterheater/heating/collector will remain the supplier of choice formany throughout the coming years

Redao solar water heater/heating/collector strives to maximizeproduction outputs and quality using the very lastest inmanufacturing solar water heater techniques, and uses solar waterheater equipment with proven reliability and the flexibility toadapt to fast changing requirements of customers. If you areinterested in Redao solar water heater system, please feel free tocall us