描述：
内缧纹塞头
| 内缧纹规格 | 订单编号 |
| 1/4BSP | 1/4BSP(PDC) |
| 1/4NPT | 1/4NPT(PDC) |
| 3/8BSP | 3/8BSP(PDC) |
| 3/8NPT | 3/8NPT(PDC) |
| 1/2BSP | 1/2BSP(PDC) |
| 1/2NPT | 1/2NPT(PDC) |
| 3/4BSP | 3/4BSP(PDC) |
| 3/4NPT | 3/4NPT(PDC) |
| 1"BSP | 1"BSP(PDC) |
| 1"NPT | 1"NPT(PDC) |
| 1-1/4BSP | 1-1/4BSP(PDC) |
| 1-1/4NPC | 1-1/4NPC(PDC) |
| 1-1/2BSP | 1-1/2BSP(PDC) |
| 1-1/2NPT | 1-1/2NPT(PDC) |
| 2"BSP | 2"BSP(PDC) |
| 2"NPT | 2"NPT(PDC) |
