長半(ban)徑(jing)襯塑(su)彎(wan)(wan)(wan)頭(tou)(tou)在(zai)用(yong)(yong)(yong)量上比短半(ban)徑(jing)多，長半(ban)徑(jing)彎(wan)(wan)(wan)頭(tou)(tou)主要用(yong)(yong)(yong)于磨損程度高，腐蝕(shi)強(qiang)度大的(de)位置，能夠(gou)減少阻(zu)力(li)，壓(ya)力(li)高或者(zhe)流速高的(de)地方(fang)多采用(yong)(yong)(yong)長半(ban)徑(jing)，在(zai)廢水輸送(song)中(zhong)選用(yong)(yong)(yong)更(geng)大的(de)長半(ban)徑(jing)彎(wan)(wan)(wan)頭(tou)(tou)，短半(ban)徑(jing)彎(wan)(wan)(wan)頭(tou)(tou)在(zai)安裝時有限制的(de)地方(fang)使用(yong)(yong)(yong)，壓(ya)力(li)低的(de)流體中(zhong)可以選用(yong)(yong)(yong)短半(ban)徑(jing)彎(wan)(wan)(wan)頭(tou)(tou)。