Shenzhen factory fire doors fire doors to teach you how to choose

When you purchase fire door easiest way is to weigh the weight of heavier qualified fire doors, poor filler door because fraud is generally lighter, beat sound is not crisp. Fire emergency lights mainly depends on its battery capacity, whether it is consistent with its national accreditation * models. Unscrupulous manufacturers tend to adopt measures to reduce the battery capacity to reduce costs, to fool the customer. So in front of the fire, please carefully consider the purchase thoughtful. The Fire Next Door Factory teach you to purchase high quality professional fire doors three strokes, the first move is to check the appearance, quality steel fire door firmly welded joints evenly distributed; smooth outer surface coating; qualified exterior wood fire doors should be complete, undamaged, surface bare, no scats, glitches and hammer India; cutting angle, patchwork should be tight formation; in a predetermined position should be marked on the product, qualified quality inspection marks and quality certification (accreditation) mark. The second trick is digital, qualified products doors thickness should be greater than or equal the thickness of the sample is described in the doors, door frames should be more than equal to the width of the side wall of the sample described in the sidewall width of the door frame, fire-resistant glass dimensions should be less than or equal Sample Description of Fire glass dimensions. The third measure is to look at the seal, qualified steel, wood fire doors should set fire seal, the seal should be straight, not arched, and national testing agency issued a qualified inspection report.