>>>Link: Construction Process for Wood Keel Partition Wall
Exterior
First of all, judging from the appearance, the surface of the high-quality keel is smooth and smooth, with clear texture and smooth lines. The bad surface of the keel is rough with burrs, and the shades are uneven. Some of them may even be broken.
Cross section
Secondly, looking at the cross section of the ground keel, the purpose of looking at the cross section is to look at the rings of the wood. The more the annual rings, the longer the growth time of the wood.
package
Third, look at the outer packaging of the keel and related certificates. The packaging of the high-quality keel will clearly indicate the raw material specifications of the sheet, and at the same time, it will indicate the environmental protection level of the sheet. The interior should be E1, and the current E0 material also appears. . The poor quality of keel packaging is rough and some information is not clear. Be sure to buy it carefully when purchasing the keel.
Purchase materials
Nanjing Kun Wei Door & Window Engineering Co., Ltd , http://www.chaluminumparts.com