A.圓集流管Φ12.4,Φ13,Φ16,Φ18,Φ20,Φ22,Φ25,Φ30,Φ32,Φ40,Φ60
B.D形集流管D16,D18,D20.4,D21,D26,D30
C矩形集流管9.9*9.9,12.5*12.5,27*22,27*14,30*30