Qingdao Shagang Solar Equipment Coperatio

Company Description

VACUUM SOLAR TUBE is Qingdao Shagang Solar Equipment Coperatio leading products.The company strives to become a professional manufacturer and supplier of excellent rough tubes,vacuum heart-collecting tubes and solar power hearts.And in 2005,Through ISO9001:2000and ISO14001:2004 system authentication.Features as follow:1.Structure All-glass-coaxial double-layer tubes2.Outer Tube thickness 1.6mm ,Inner tube thickness 1.6mm .3.Material of coating :Al N/Al N-SS/Cu .4.Absorptance 0.94~0.96 Emittance 0.04~0.06 .5.Transmittance of Outer Tube : 0.91 .6.Stagnation temperature (height) : 270~300C .7.Bearing hailstone ability : hailstone diameter 25mm 8.Pressure-endure ability 1MPa