Fire door fittings Standard | fire doors | fire doors Henan Tian Rong brand

 Press turned into fire doors normally closed and normally open fire doors. Normally closed fire doors are generally made of fire doors, door frames, door closers, seals and other components of fire doors size, dual fan or fan normally closed fire door is also equipped with the sequencer. When should the cloth measurement points on wood fire doors average temperature reaches 140 ℃ or any temperature measurement points to reach 180 ℃, that sentence lost its insulation. In the field of product consistency check, you should check the following: 1, the product appearance is consistent with the standards; 2, identify whether the product is consistent with the standards; 3, the product structure is consistent with the test report; 4, the product of the material is consistent with the test report; 5, the performance parameters of the product is consistent with the test report. The above is about the history of the origins and technical requirements in terms of our wood fire doors fire doors off the price of related presentations, related products, if there is doubt, please consult a professional manufacturer of solid wood fire doors, I believe it will get a satisfactory answer. Fire door fittings Standard | fire doors | fire doors Henan Tian Rong Tian Rong brand provided by Zhengzhou Fire Door. Zhengzhou Tian Rong Fire Door (www.hntianrong.com) strong, credible, in Zhengzhou, Henan Province of fire-resistant, fire prevention materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Tianrong fire doors and you hand into the brilliant, for a better future!