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国际通用系列钢管(英制管) Inch Pipe
| 公称通径 Nominal Diameter | 外径 Outside Diameter D | Sch40 STD Sch80 XS | Sch160 XXS | L | |
| DN | NPS | ||||
| 8 | 1/4 | 13.5 | ○ | 60 90 120 150 180 | |
| 10 | 3/8 | 17.2 | ○ | ||
| 15 | 1/2 | 21.3 | ○ | ○ | |
| 20 | 3/4 | 26.7 | ○ | ○ | |
| 25 | 1 | 33.4 | ○ | ○ | |
| 32 | 1.1/4 | 42.2 | ○ | ○ | |
| 40 | 1.1/2 | 48.3 | ○ | ○ | |
| 50 | 2 | 60.3 | ○ | ○ | |
国内沿用系列钢管(公制管) Metric Pipe
| 公称通径 Nominal Diameter | 外径 Outside Diameter D | 厚度 Thickness | 长度 Length |
| DN | |||
| 10 | 14 | 2-5 | 60 90 120 150 180 |
| 15 | 18 | ||
| 20 | 25 | ||
| 25 | 32 | ||
| 32 | 38 | ||
| 40 | 45 | ||
| 50 | 57 |
