[Steel fire door] | Zhoukou steel fire doors Agents | steel fire door selling brand in Zhengzhou

[Steel fire door] | Zhoukou steel fire doors Agents | steel fire door selling brands offered by long-Zhengzhou-based Industries. Zhengzhou long Industrial Co., Ltd. (www.zzjiuji.com) had been "Business League certification", please rest assured purchase through the entire network, click on the page check "Business League certification icon," the company authentication information. You can also click on the "Business League Service Icons" on this page directly contact our customer service! To share with you a simple quality control steel fire doors: 1, stand cheek door opening should pay attention to the thickness of the wall plaster layer steel fire door leading companies, the door should be installed after the surface is flush with the plaster . 2, should pull down about masonry wall to find the rules to ensure that the location and size of the hole wall leaving in an accurate, uniform size margin to stay. After installing the door frame around Nuiko should not be too large or too small Zhoukou steel fire door dealer, installing door epithelium under normal circumstances should be less than 10 mm door and window lintels to 15 mm. 3, when the masonry wall shall be required to set aside embedded parts steel fire doors, the number may not be missing, embedded parts to ensure a solid masonry; half brick or masonry walls should be set lightweight concrete blocks with embedded parts shall not be used directly in the masonry wall embedded parts; situ or precast concrete wall partition board business Anyang steel fire doors should be poured directly in the production of concrete embedded parts so firmly fixed in precast concrete walls and wall panels inside. Set embedded parts must meet the number and spacing requirements. By the following method to avoid the election to the cottage of steel fire doors: 1, consumers should see there is no hit ABC D logo on the door frame or facade, steel fire doors marked "B, C, D", and the metal door, steel security door into the door and other non-no this logo. 2, from the door of the quality and texture can distinguish the difference between an ordinary metal steel fire doors and gates. Weight steel fire doors at 55 kg or more, the door plate thickness of 1.5 mm or more; while the weight of the metal door, steel entry door and other non-steel fire door is only about 30 kg, door plate thickness is only 1 mm. 3, should seriously look at whether the use by the public security department locks tested and special anti-theft locks, and look at whether the anti-drilling lock function. Now there are many anti-theft locks for multi-faceted locks, door locks advantage is not only up and down the bar can be inserted into the lock, Tamper greatly increased performance of the door.