ข้อต่อตรงเกลี่ยวใน
| # | DxD | Price(฿) |
|---|---|---|
| 1 | 20x1/2" | 38 |
| 2 | 25x3/4" | 43 |
| 3 | 32x1 | 58 |
| 4 | 40x11/4" | 138 |
| 5 | 50x11/2" | 158 |
| 6 | 63x2" | 250 |
| 7 | 75x21/2" | 398 |
| 8 | 90x3" | 787 |
| 9 | 110x4" | 1200 |
| # | DxD | Price(฿) |
|---|---|---|
| 1 | 20x1/2" | 38 |
| 2 | 25x3/4" | 43 |
| 3 | 32x1 | 58 |
| 4 | 40x11/4" | 138 |
| 5 | 50x11/2" | 158 |
| 6 | 63x2" | 250 |
| 7 | 75x21/2" | 398 |
| 8 | 90x3" | 787 |
| 9 | 110x4" | 1200 |