中文字幕欧美日韩,97久久久久亚洲,亚洲第一激情,国产高清大尺度一区二区不卡,成人国产网站,天堂成人一区二区三区,亚洲线精品一区二区三区八戒

産(chan)品詳情

U-shaped aluminum square pass特點(diǎn)：

Installation method:

1. The horizontal line should be well drawn according to the required horizontal height, and the vertical and horizontal lines should be well drawn.

2. Hoist the light steel keel (38 or 50 keel) according to the appropriate spacing, with the general spacing being 1-1.2 meters.

3. Preload the lifting part on the keel, and install the same square through keel under the light steel keel. The spacing of the square through keel is generally 1 meter.

4. Fasten the aluminum square through series and the wood grain aluminum square through series on the keel in order, and then press down the inverted locking piece, and keep the square through end at a distance of 10mm or 20mm.

5. Wear gloves when installing party tong. If finger marks or stains are left by accident, it can be cleaned by washing with clean water.