Vacuum tubeclassifyCommon vacuum tubeTri-element vacuum tubeThree target vacuun tubeCoating AL-N-ALALN/AL N-SS/CUALN/AL N-SS/CU+TiColorSlant blueSlant red (contain Cu)More red and goldStructureAll glass coaxial double-layer tubesAll glass coaxial double- layer tubesAll glass coaxial double- layer tubesCommon models47*1500mm 58*1800mm47*1500mm 58*1800mm47*1500mm 58*1800mmOuter tube diameter470.7mm 580.7mm470.7mm 580.7mm470.7mm 580.7mmInner tube diameter370.7mm 470.7mm370.7mm 470.7mm370.7mm 470.7mmWeight1.350.12kg 2.290.18kg1.350.12kg 2.290.18kg1.350.12kg 2.290.18kgHail resistence25mm25mm25mmVacuumP5 * 10-3paP5 * 10-3paP5 * 10-3paWater tankclassifyOuter tank Inner tankMeterial Stainless steel, colorful steel, galvanized steel SUS304 2BThickness0.29-0.4mmNon-pressurized: 0.31-0.5(general for 0.4) Pressurized: 1.2mmDiameter400-500mm300-400mmSpacing between two tubes7.0-8.0cm (47is 7.0cm)Tube quantity5-36pcs (25pcs/single row for double row project )5-36pcs (25pcs/single row for double row project )Heat pipethe diameter of condenser side: general for 14mmthe length of condenser side: general for 7cm(also can be 9cm)the diameter of tube: general for 8mm Thermal insulating layer: 50-60mm(55mm) Thickness of frame: 1.2mm-1.5mm Copper coil: 15 meter for normalMaking process of water tankClipingInter tankDrill holeArgon arcRoll roundInlet and outlet holeflangingStraight weldingPoint weldingHolding the fixing bandRolled steelOuter tankEnd cover roll weldingTest water with high pressureDrill hole in fixing bandBuckle bonePackaging Pressure seamFoaming BrandingWiping tankRolled steelClearing Heat presenvation