| 摘要 |
<p>In a wooden supporting holder of a concrete formwork according to the said invention, which consists of an upper (1) and a lower flange (1') and a vertical leg (2) connecting the said flanges (1, 1'), both flanges (1, 1') are circularly round (3) bevelled at both ends on both sides and a shield (A) of the front part of the holder is fastened to the holder (B) with plugs (4), or the shield (A) of the front part of the holder is fastened to the holder (B) with a feather (7). The shield (A) of the front part of the holder (B) is made of red colour polypropylene of DOW Polypropylene brand, grade C766-03, produced by DOW Chemicals.</p> |
