CN 
English
| 代号 | 螺纹 | 管子外径 | 尺寸 | 压力等级 | ||
| E | C | d | S2 | |||
| N大号-12 | M12X1.5 | 6 | 14.5 | 6 | 14 | L |
| NL-14 | M14X1.5 | 8 | 14.5 | 8 | 17 | |
| NL-16 | M16X1.5 | 10 | 15.5 | 10 | 19 | |
| NL-18 | M18X1.5 | 12 | 15.5 | 12 | 22 | |
| NL-22 | M22X1.5 | 15 | 17 | 15 | 27 | |
| NL-26 | M26X1.5 | 18 | 18 | 18 | 32 | |
| NL-30 | M30X2 | 22 | 20 | 22 | 36 | |
| NL-30D | M30X1.5 | 22 | 19 | 22 | 36 | |
| NL-36 | M36X2 | 28 | 21 | 28 | 41 | |
| NL-36D | M36X1.5 | 28 | 21 | 28 | 41 | |
| NL-45 | M45X2 | 35 | 24 | 35 | 50 | |
| NL-45D | M45X1.5 | 35 | 25 | 35 | 50 | |
| NL-52 | M52X2 | 42 | 24 | 42 | 60 | |
| NS-14 | M14X1.5 | 6 | 16.5 | 6 | 17 | S |
| NS-16 | M16X1.5 | 8 | 16.5 | 8 | 19 | |
| NS-18 | M18X1.5 | 10 | 17.5 | 10 | 22 | |
| NS-20 | M20X1.5 | 12 | 17.5 | 12 | 24 | |
| NS-22 | M22X1.5 | 14 | 20.5 | 14 | 27 | |
| NS-24 | M24X1.5 | 16 | 20.5 | 16 | 30 | |
| NS-30 | M30X2 | 20 | 24 | 20 | 36 | |
| NS-36 | M36X2 | 25 | 27 | 25 | 46 | |
| NS-42 | M42X2 | 30 | 29 | 30 | 50 | |
| NS-52 | M52X2 | 38 | 32.5 | 38 | 60 | |
