产品中心
product center
| 产品代码 | 公称通径DN(mm) | 外径（mm) |
| B30-19133076 | 125x65 | 133x76.1 |
| B30-19133088 | 125x80 | 133x88.9 |
| B30-19133101 | 125x100 | 133x101.6 |
| B30-19159076 | 150x65 | 159x76.1 |
| B30-19159088 | 150x80 | 159x88.9 |
| B30-19159101 | 150x100 | 159x101.6 |
| B30-19219101 | 200x100 | 219x101.6 |
| B30-19273101 | 250x100 | 273x101.6 |
| B30-19325101 | 300x100 | 325x101.6 |