Short solar vacuum tube for mini solar water heater D58-L800MM

  1, Photos:     2, Material:   Tri-target(CU/SS-ALN)coated short solar vacuum tube D58-L800MM   3, Specs:   

Tube structure		All-glass double tube co-axial structure
Glass material		Borosilicate 3.3 glass
Outer tube diameter and glass thickness		Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm Φ=70±0.7mm &=2.0mm ±0.15mm
Inter tube diameter and glass thickness		Φ=37±0.7mm &=1.6mm ±0.15mm Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm
Tube length		1200mm,1500mm,1600mm, 1800mm,1900mm ,2000mm , 2100mm
Absorber coating	Coating material	CU/SS-AL/N
	Sediment method	Tri-Targets magnetron sputtering plating
	Absorptivity	a:0.93(AM1.5)
	Emittance	ε≤6 % (80°C±5°C)
Vacuum degree		P ≤5.0×10-3 Pa
Transmittance of glass tube		T ≥0.89(AM1.5 ISO9806-1:1994)
Stagnation parameter		Y ≥250 m²°C/kw
Average heat loss		ULT:0.55~0.65W/(m²*°C)
Hail resistance		Φ25 mm
Pressure-endure		0.6 Mpa

  4, Payment   <1> T/T(wire transfer) <2> L/C at sight <3> 30% T/T in advance as deposit, the rest paid before shipment <4> 30% T/T in advance as deposit, the rest paid against B/L copy   5, Certificate     6, Our advantages:   <1> We have 8 senior engineers working on development. that will make us lead the trend whatever on structure or technolgy <2> 15 QC control the quality, just make sure all is right <3> Aftersale service is quick, any problem you mentioned will be dealt with in 24 hours! <4> Our professional salesmen always online for your questions   7, Factory photos:      8, Contact:   Mr Krista Zhang   Position: Sales manager Phone: 86-573-87090146 Mob: 0086-18857389277 Wechat: Zilansolar Skype: Krista025 Website: www.zilantech.com   For more details, pls send email to us, thanks!