คุณสมบัติและการใช้งานท่อเหล็กดำมีตะเข็บ
ท่อเหล็กไร้ตะเข็บ เหมาะสำหรับงานที่เน้นด้านความปลอดภัยสูง เช่นงานน้ำมัน งานแก๊ส เพราะเป็นงานที่ต้องอาศัยความปลอดภัยมาก ท่อจะแตกไม่ได้
ขนาดมาตรฐานท่อเหล็กดำไร้ตะเข็บ
| Nominal Size | Outside Diameter | ความหนา | พท.หน้าตัด | น้ำหนักต่อเมตร |
| Thickness | Cross Section Area | Weight Per m. | ||
| (mm.) | (mm.) | (mm.) | (sq.mm) | (kg/m.) |
| 15 | 21.7 | 2.00 | 1.238 | 0.97 |
| 20 | 27.2 | 2.00 | 1.583 | 1.24 |
| 2.30 | 1.799 | 1.41 | ||
| 25 | 34 | 2.30 | 2.291 | 1.80 |
| 32 | 42.7 | 2.30 | 2.919 | 2.29 |
| 2.50 | 3.157 | 2.48 | ||
| 40 | 48.6 | 2.30 | 3.345 | 2.63 |
| 2.50 | 3.621 | 2.84 | ||
| 2.80 | 4.029 | 3.16 | ||
| 3.20 | 4.564 | 3.58 | ||
| 50 | 60.5 | 2.30 | 4.205 | 3.30 |
| 3.20 | 5.760 | 4.52 | ||
| 4.00 | 7.100 | 5.57 | ||
| 65 | 76.3 | 2.80 | 6.465 | 5.08 |
| 3.20 | 7.349 | 5.77 | ||
| 4.00 | 9.085 | 7.13 | ||
| 80 | 89.1 | 2.80 | 7.591 | 5.96 |
| 3.20 | 8.636 | 6.78 | ||
| 90 | 101.6 | 3.20 | 9.892 | 7.76 |
| 4.00 | 12.260 | 9.63 | ||
| 5.00 | 15.170 | 11.90 | ||
| 100 | 114.3 | 3.20 | 11.170 | 8.77 |
| 3.50 | 12.180 | 9.58 | ||
| 4.50 | 15.520 | 12.20 | ||
| 125 | 139.8 | 3.60 | 15.400 | 12.10 |
| 4.00 | 17.070 | 13.40 | ||
| 4.50 | 19.13 | 15.00 | ||
| 6.00 | 25.22 | 19.80 | ||
| 150 | 165.2 | 4.50 | 22.72 | 17.80 |
| 5.00 | 25.16 | 19.80 | ||
| 6.00 | 30.01 | 23.60 | ||
| 7.10 | 35.26 | 27.70 | ||
| 175 | 190.70 | 4.50 | 26.32 | 20.7 |
| 5.30 | 30.87 | 24.2 | ||
| 6.00 | 34.82 | 27.3 | ||
| 7.00 | 40.40 | 31.7 | ||
| 8.20 | 47.01 | 36.9 | ||
| 200 | 216.30 | 4.50 | 29.94 | 23.50 |
| 5.80 | 38.36 | 30.10 | ||
| 6.00 | 39.64 | 31.10 | ||
| 7.00 | 46.03 | 36.10 | ||
| 8.00 | 52.35 | 41.10 | ||
| 8.20 | 53.61 | 42.10 | ||
| 250 | 267.40 | 6.00 | 49.27 | 38.70 |
| 6.60 | 54.08 | 42.40 | ||
| 7.00 | 57.26 | 45.00 | ||
| 8.00 | 65.19 | 51.20 | ||
| 9.00 | 73.06 | 57.30 | ||
| 9.30 | 75.41 | 59.20 | ||
| 300 | 318.50 | 6.00 | 58.91 | 46.20 |
| 6.90 | 67.55 | 53.00 | ||
| 8.00 | 78.04 | 61.3 | ||
| 9.00 | 87.51 | 68.7 | ||
| 10.30 | 99.73 | 78.3 | ||
| 350 | 355.6 | 6.40 | 70.21 | 55.1 |
| 7.90 | 86.29 | 67.7 | ||
| 9.00 | 98.00 | 76.9 | ||
| 9.50 | 103.30 | 81.1 | ||
| 12.00 | 129.50 | 102 | ||
| 12.70 | 136.80 | 107 | ||
| 400 | 406.4 | 7.90 | 98.90 | 77.6 |
| 9.00 | 112.40 | 88.2 | ||
| 9.50 | 118.50 | 93 | ||
| 12.00 | 148.70 | 117 | ||
| 12.70 | 157.10 | 123 |
| Nominal Size | ความหนา | พท.หน้าตัด | น้ำหนักต่อเมตร | |
| Thickness | Cross Section Area | Weight Per m. | ||
| in | (mm.) | (mm.) | (sq.mm) | (kg/m.) |
| 1/2″ | 15 | 2.00 | 1.238 | 0.97 |
| 3/4″ | 20 | 2.30 | 1.799 | 1.41 |
| 1″ | 25 | 2.30 | 2.291 | 1.80 |
| 1 1/4″ | 32 | 2.30 | 2.919 | 2.29 |
| 1 1/2″ | 40 | 2.30 | 3.345 | 2.63 |
| 3.20 | 4.564 | 3.58 | ||
| 2″ | 50 | 3.20 | 5.76 | 4.52 |
| 4.00 | 7.10 | 5.57 | ||
| 2 1/2″ | 65 | 3.20 | 7.349 | 5.77 |
| 4.00 | 9.085 | 7.13 | ||
| 3″ | 80 | 3.20 | 8.636 | 6.78 |
| 4.00 | 10.69 | 8.39 | ||
| 3 1/2″ | 90 | 3.20 | 9.892 | 7.76 |
| 4.00 | 12.26 | 9.63 | ||
| 4″ | 100 | 3.20 | 11.17 | 8.77 |
| 1.50 | 15.52 | 12.20 | ||
| 5.60 | 19.12 | 15.00 | ||
| 5″ | 125 | 4.50 | 19.13 | 15.00 |
| 6.00 | 25.22 | 19.80 | ||
| 6″ | 150 | 4.50 | 22.72 | 17.80 |
| 6.00 | 30.01 | 23.60 | ||
| 7″ | 175 | 5.00 | 29.17 | 22.90 |
| 7.00 | 40.40 | 31.70 | ||
| 8″ | 200 | 6.00 | 39.61 | 31.10 |
| 8.00 | 52.35 | 41.10 | ||
