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堵头 PLUG
| 代号 | 螺纹 THREAD | 管子外径 D1 | 尺寸 DIMENSIONS | |||
| PART NO. | E | TUBE O.D. | l1 | L1 | S1 | S2 |
| 4C-12 | M12X1.5 | 6 | 7 | 22 | 12 | 14 |
| 4C-14 | M14X1.5 | 8 | 8 | 23 | 14 | 17 |
| 4C-16 | M16X1.5 | 10 | 9 | 24 | 17 | 19 |
| 4C-18 | M18X1.5 | 12 | 10 | 25 | 19 | 22 |
| 4C-22 | M22X1.5 | 15 | 11 | 26 | 24 | 27 |
| 4C-26 | M26X1.5 | 18 | 11.5 | 28 | 27 | 32 |
| 4C-30 | M30X2 | 22 | 13.5 | 30 | 32 | 36 |
| 4C-36 | M36X2 | 28 | 14.5 | 31 | 38 | 41 |
| 4C-45 | M45X2 | 35 | 14.5 | 36 | 46 | 50 |
| 4C-52 | M52X2 | 42 | 16 | 39 | 55 | 60 |
| 4D-14 | M14X1.5 | 6 | 11 | 26 | 14 | 17 |
| 4D-16 | M16X1.5 | 8 | 13 | 28 | 17 | 19 |
| 4D-18 | M18X1.5 | 10 | 12.5 | 29 | 19 | 22 |
| 4D-20 | M20X1.5 | 12 | 14.5 | 31 | 22 | 24 |
| 4D-22 | M22X1.5 | 14 | 16 | 33.5 | 24 | 27 |
| 4D-24 | M24X1.5 | 16 | 15.5 | 34 | 27 | 30 |
| 4D-30 | M30X2 | 20 | 17.5 | 39 | 32 | 36 |
| 4D-36 | M36X2 | 25 | 20 | 44 | 38 | 46 |
| 4D-42 | M42X2 | 30 | 20.5 | 47 | 46 | 50 |
| 4D-52 | M52X2 | 38 | 23 | 54 | 55 | 60 |
