Model: IRA-HP58/1.8-20 Material of out tank: 0.31mm thickness color steel/ fluorine carbon steel Material of inner tank: Food grade 1.0 mm thickness SUS304 stainless steel Tank insulating layer: 50mm thickness, 45kg/m3 high-density polyurethane foamed Inlet and outlet hole: Female G 3/4 Max pressure: 0.9Mpa Solar collector tube: 3.3 Borosilicate glass with Al-SS/Cu coating 58x1,800mm with heat pipe Thickness of glass tube: 1.6mm Vacuum tube tightness: P0.005 Pa Absorption: as=0.93-0.96(AM1.5) Emission ratio: µh=0.04-0.06(80C±5C) Idle sunning property parameters: Y=220~260m2.C/KW Average heat loss coefficient: ULT=0.6~0.7W/(m2.C) Bracket: 1.2mm thickness of galvanized steel material Structure of tank: 6 holes for PT valve,water inlet and outlet,Mag Rod Welding: Argon arc welding Fastening pieces: Made of stainless steel screw Absorber area: 1.874m2 Heat pipe size: Dia14mm x 70mm length condenser,170cm length in total Heat pipe material: TU1 copper Heat pipe power: >120W/pcs Temperature tolerance: from -35C to 250C Tube quantity: 20 tubes Other Tube quantity: 8/10/12/15/18/20/24/30/36 tubes Tank capacity: 200L Other Tank capacity: 80/100/120/150/180/200/240/300/360L