<p>requirements of long-term use, and no looseness occurs. 7, check whether the wooden keel and the wall have a retractable gap. Light steel keel, light steel keel appearance to acceptance of 1 straight smooth it, if not broken or punch clear edges and other defects, even if the qualified light steel keel, burr or deformation in the incision or not, will affect the use of. 2. The galvanized coating on the light steel keel does not allow quality defects such as peeling, lifting and </p>
<p>peeling. 3, excellent products are not allowed to damage, corrosion, pitting spots, and the area is not more than 1C square meters; the spots per meter in not more than three. 4, family ceiling, light steel keel, main keel with 50 series completely enough, its galvanized sheet wall thickness should not be less than 1mm. Do not easily believe that business specifications large, quality is good. The installation acceptance method of wooden keel and keel above is small house for your introduction, I hope to help you, if you want to know more please continue to pay attention to knowledge acceptance keel, house decoration net.Solid wood door is a door favored by consumers, it is natural, </p>
<p>environmental protection, long service life, good decorative effect. Solid wood door can be divided into solid wood door, solid wood composite door and molded wooden door. Below we come to see the classification and advantages and disadvantages of solid wood door. 1, the classification of solid wood doors, solid wood door solid wood door is drawn to natural logs from the forest to make the door core, after drying, then by cutting, planing, </p>
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