貝雷片(pian)由(you)上、上弦(xian)(xian)(xian)(xian)桿(gan)(gan)、豎桿(gan)(gan)及斜桿(gan)(gan)焊接而成(cheng)，上上弦(xian)(xian)(xian)(xian)桿(gan)(gan)的(de)端部有(you)陰(yin)陽討論，討論上有(you)杵架毗(pi)(pi)連(lian)(lian)銷孔。貝雷片(pian)的(de)弦(xian)(xian)(xian)(xian)桿(gan)(gan)由(you)兩根10號槽鋼(背靠背)組合(he)而成(cheng)，鄙人弦(xian)(xian)(xian)(xian)桿(gan)(gan)上，焊有(you)多(duo)塊帶圓(yuan)孔的(de)鋼板，在上、上弦(xian)(xian)(xian)(xian)桿(gan)(gan)內有(you)供與(yu)增強弦(xian)(xian)(xian)(xian)桿(gan)(gan)和(he)雙層桁架毗(pi)(pi)連(lian)(lian)的(de)螺栓孔，在下弦(xian)(xian)(xian)(xian)桿(gan)(gan)內另有(you)供毗(pi)(pi)連(lian)(lian)支(zhi)持架用(yong)的(de)四個螺栓孔，貝雷片(pian)銷此中間(jian)的(de)兩個孔是供雙排或多(duo)排桁架同節(jie)間(jian)毗(pi)(pi)連(lian)(lian)用(yong)的(de)。