| r r 公称外径(DN/mm) r r | rr r 平均外径极限偏差(mm) r r | rr r 基本尺寸(mm) r r | rr r 极限偏差(mm) r r | r
| r r 40 r r | rr r +0.3 r r | rr r 2.0 r r | rr r +0.4 r r | r
| r r 50 r r | rr r +0.3 r r | rr r 2.0 r r | rr r +0.4 r r | r
| r r 75 r r | rr r +0.3 r r | rr r 2.0 r r | rr r +0.4 r r | r
r


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