◎ Reducing Joint
dn
D
D1
H1
200 × 160
200
160
257
200 × 110
110
265
200 × 90
90
270
160 × 110
228
160 × 90
233
160 × 75
75
110 × 90
189
110 × 75
190
110 × 63
63
183
90 × 75
172
90 × 63
166
75 × 63
150