Material: adc12, die-casting, anti-erode aluminum, molded by 800t automatic machine by one step. Surface: spraying with epoxy-colophony powder, roasting twice in 190-200centigrade degree, make the surface smooth and keep the paint permanent. Central distance(h): 500mm Thermal output:175w/pc Radiating area:2.3-3.1square meters/pc Connecting size: 1" or 3/4" or 1/2" Weight:1.25kgs/pc Size:580*80*80mm Water content:0.38l/pc Working pressure: 1.2-2.0mpa/20kg/20bar Certificates:ce, rohs, iso9001:2000, iso/ts16949, en422 Trademark: warmguard Productivity: 300, 000pcs/month Delivery time: 12 days after seller receives 30% deposit or l/c Packing: shrink bag, bubble bag, carton box Carton size: 815*89*595mm/10pieces Container load: 20"fcl 9240 pieces, 40"hc fcl 22680 pieces