Mục lục
Kích thước ống thép Seah ASTM A53
| Kích Thước Danh Nghĩa | Đường kính ngoài | Độ dày | Trọng lượng danh nghĩa | Phân loại theo trọng lượng | Tiêu chuẩn SCH | Áp lực thử (psi) | ||||||||||
| Vát phẳng | Ren răng có đầu nối | Vát phẳng | Ren răng có đầy nối | |||||||||||||
| in. | in. | mm | in. | mm | lb/ft | kg/ft | kg/m | lb/ft | kg/ft | kg/m | Grade A | Grade B | Grade A | Grade B | ||
| 1/2″ | 0.840 | 21.3 | 0.109 | 2.77 | 0.86 | 0.39 | 1.27 | 0.86 | 0.39 | 1.27 | STD | 40 | 700 | 700 | 700 | 700 |
| 0.147 | 3.73 | 1.08 | 0.49 | 1.62 | 1.09 | 0.49 | 1.62 | XS | 80 | 850 | 850 | 850 | 850 | |||
| 3/4″ | 1.050 | 26.7 | 0.113 | 2.87 | 1.14 | 0.52 | 1.69 | 1.14 | 0.52 | 1.69 | STD | 40 | 700 | 700 | 700 | 700 |
| 0.154 | 3.91 | 1.47 | 0.67 | 2.20 | 1.48 | 0.67 | 2.21 | XS | 80 | 850 | 850 | 850 | 850 | |||
| 1″ | 1.315 | 33.4 | 0.133 | 3.38 | 1.67 | 0.76 | 2.50 | 1.69 | 0.77 | 2.50 | STD | 40 | 700 | 700 | 700 | 700 |
| 0.179 | 4.55 | 2.18 | 0.99 | 3.24 | 2.19 | 0.99 | 3.25 | XS | 80 | 850 | 850 | 850 | 850 | |||
| 1 ¼” | 1.660 | 42.2 | 0.140 | 3.56 | 2.27 | 1.03 | 3.39 | 2.28 | 1.03 | 3.40 | STD | 40 | 1,200 | 1,300 | 1,000 | 1,100 |
| 0.191 | 4.85 | 2.99 | 1.36 | 4.47 | 3.02 | 1.37 | 4.49 | XS | 80 | 1,800 | 1,900 | 1,500 | 1,600 | |||
| 1 ½” | 1.900 | 48.3 | 0.145 | 3.68 | 2.71 | 1.23 | 4.05 | 2.74 | 1.24 | 4.04 | STD | 40 | 1,200 | 1,300 | 1,000 | 1,100 |
| 0.200 | 5.08 | 3.63 | 1.65 | 5.41 | 3.65 | 1.66 | 5.39 | XS | 80 | 1,800 | 1,900 | 1,500 | 1,600 | |||
| 2″ | 2.375 | 60.3 | 0.154 | 3.91 | 3.65 | 1.66 | 5.44 | 3.68 | 1.67 | 5.46 | STD | 40 | 2,300 | 2,500 | 2,300 | 2,500 |
| 0.218 | 5.54 | 5.02 | 2.28 | 7.48 | 5.08 | 2.30 | 7.55 | XS | 80 | 2,500 | 2,500 | 2,500 | 2,500 | |||
| 2 ½” | 2.875 | 73.0 | 0.203 | 5.16 | 5.79 | 2.63 | 8.63 | 5.85 | 2.65 | 8.67 | STD | 40 | 2,500 | 2,500 | 2,500 | 2,500 |
| 0.276 | 7.01 | 7.66 | 3.48 | 11.41 | 7.75 | 3.52 | 11.52 | XS | 80 | 2,500 | 2,500 | 2,500 | 2,500 | |||
| 3″ | 3.500 | 88.9 | 0.125 | 3.18 | 4.51 | 2.05 | 6.72 | – | – | – | – | – | 1,290 | 1,500 | – | – |
| 0.156 | 3.96 | 5.57 | 2.53 | 8.29 | – | – | – | – | – | 1,600 | 1,870 | – | – | |||
| 0.188 | 4.78 | 6.64 | 3.02 | 9.92 | – | – | – | – | – | 1,930 | 2,260 | – | – | |||
| 0.216 | 5.49 | 7.57 | 3.44 | 11.29 | 7.68 | 3.48 | 11.35 | STD | 40 | 2,220 | 2,500 | 2,200 | 2,500 | |||
| 0.250 | 6.35 | 8.67 | 3.94 | 12.93 | – | – | – | – | – | 2,500 | 2,500 | – | – | |||
| 0.281 | 7.14 | 9.66 | 4.39 | 14.40 | – | – | – | – | – | 2,500 | 2,500 | – | – | |||
| 0.300 | 7.62 | 10.26 | 4.65 | 15.27 | 10.35 | 4.69 | 15.39 | XS | 80 | 2,500 | 2,500 | 2,200 | 2,500 | |||
| 4″ | 4.500 | 114.3 | 0.125 | 3.18 | 5.81 | 2.65 | 8.71 | – | – | – | – | – | 1,000 | 1,170 | – | – |
| 0.156 | 3.96 | 7.17 | 3.29 | 10.78 | – | – | – | – | – | 1,250 | 1,460 | – | – | |||
| 0.188 | 4.78 | 8.65 | 3.93 | 12.91 | – | – | – | – | – | 1,500 | 1,750 | – | – | |||
| 0.219 | 5.56 | 9.99 | 4.54 | 14.91 | – | – | – | – | – | 1,750 | 2,040 | – | – | |||
| 0.237 | 6.02 | 10.78 | 4.90 | 16.07 | – | – | – | – | 40 | 1,900 | 2,210 | – | – | |||
| 0.337 | 8.56 | 15.00 | 6.80 | 22.32 | 15.20 | 6.89 | 22.60 | XS | 80 | 2,700 | 2,800 | 2,700 | 2,800 | |||
| 5″ | 5.563 | 141.3 | 0.156 | 3.96 | 9.00 | 4.09 | 13.41 | – | – | – | – | – | 1,010 | 1,180 | – | – |
| 0.188 | 4.78 | 10.78 | 4.90 | 16.09 | – | – | – | – | – | 1,220 | 1,420 | – | – | |||
| 0.203 | 5.16 | 11.62 | 5.28 | 17.32 | – | – | – | – | – | 1,220 | 1,420 | – | – | |||
| 0.258 | 6.55 | 14.61 | 6.64 | 21.77 | 14.90 | 6.76 | 22.07 | STD | 40 | 1,670 | 1,950 | 1,700 | 1,900 | |||
| 0.281 | 7.14 | 15.84 | 7.20 | 23.62 | – | – | – | – | – | 1,820 | 2,120 | – | – | |||
| 0.312 | 7.92 | 17.47 | 7.94 | 26.05 | – | – | – | – | – | 2,020 | 2,360 | – | – | |||
| 0.344 | 8.74 | 19.16 | 8.71 | 28.57 | – | – | – | – | – | 2,230 | 2,600 | – | – | |||
| 0.375 | 9.52 | 20.75 | 9.43 | 30.94 | 21.04 | 9.54 | 31.42 | XS | 80 | 2,430 | 2,800 | 2,400 | 2,800 | |||
| 6″ | 6.625 | 168.3 | 0.156 | 3.96 | 10.76 | 4.89 | 16.05 | – | – | – | – | – | 1,020 | 1,190 | – | – |
| 0.188 | 4.78 | 12.94 | 5.87 | 19.27 | – | – | – | – | – | 1,020 | 1,190 | – | – | |||
| 0.203 | 5.16 | 13.93 | 6.33 | 20.76 | – | – | – | – | – | 1,020 | 1,190 | – | – | |||
| 0.219 | 5.56 | 14.96 | 6.80 | 22.31 | – | – | – | – | – | 1,190 | 1,390 | – | – | |||
| 0.250 | 6.35 | 17.01 | 7.73 | 25.36 | – | – | – | – | – | 1,360 | 1,580 | – | – | |||
| 0.280 | 7.11 | 18.94 | 8.61 | 28.26 | 19.34 | 8.77 | 28.58 | STD | 40 | 1,520 | 1,780 | 1,500 | 1,800 | |||
| 0.312 | 7.92 | 21.01 | 9.55 | 31.32 | – | – | – | – | – | 1,700 | 1,980 | – | – | |||
| 0.344 | 8.74 | 23.06 | 10.48 | 34.39 | – | – | – | – | – | 1,870 | 2,180 | – | – | |||
| 0.375 | 9.52 | 24.99 | 11.36 | 37.28 | – | – | – | – | – | 2,040 | 2,380 | – | – | |||
| 0.432 | 10.97 | 28.53 | 12.97 | 42.56 | – | – | – | – | – | 2,350 | 2,740 | 2,300 | 2,700 | |||
| 8″ | 8.625 | 219.1 | 0.156 | 3.96 | 14.08 | 6.40 | 21.01 | – | – | – | – | – | 780 | 920 | – | – |
| 0.188 | 4.78 | 16.94 | 7.70 | 25.26 | – | – | – | – | – | 780 | 920 | – | – | |||
| 0.203 | 5.16 | 18.26 | 8.30 | 27.22 | – | – | – | – | – | 850 | 1,000 | – | – | |||
| 0.219 | 5.56 | 19.62 | 8.92 | 29.28 | – | – | – | – | – | 910 | 1,070 | – | – | |||
| 0.250 | 6.35 | 22.33 | 10.15 | 33.31 | – | – | – | – | 20 | 1,040 | 1,220 | – | – | |||
| 0.277 | 7.04 | 24.68 | 36.81 | 36.31 | 25.53 | 11.58 | 38.07 | – | 30 | 1,160 | 1,350 | 1,200 | 1,300 | |||
| 0.312 | 7.92 | 27.65 | 12.57 | 41.24 | – | – | – | – | – | 1,300 | 1,520 | – | – | |||
| 0.322 | 8.18 | 28.53 | 12.97 | 42.55 | 29.35 | 13.31 | 43.73 | STD | 40 | 1,340 | 1,570 | 1,300 | 1,600 | |||
| 0.344 | 8.74 | 30.40 | 13.82 | 45.34 | – | – | – | – | – | 1,440 | 1,680 | – | – | |||
| 0.375 | 9.52 | 33.00 | 15.00 | 49.20 | – | – | – | – | – | 1,570 | 1,830 | – | – | |||
| 0.406 | 10.31 | 35.60 | 16.18 | 53.08 | – | – | – | – | 60 | 1,700 | 2,000 | – | – | |||
| Dung dai độ dày : + không qui định, – 12,5% | Dung sai đường kính : ĐK đến 11/2″ ± 1/64″; ĐK từ 2″ trở lên ± 1% | |||||||||||||||
Ứng dụng ống thép Seah ASTM A53
Đối với nước thành phố & công nghiệp, nước tưới & nông nghiệp, cung cấp dầu và khí đốt, vòi phun nước, vòi chữa cháy, đường ống tàu thủy, v.v.
Hóa chất và vật lý yêu cầu của ống thép Seah
Yêu cầu hóa chất (%)
| C | Mn | P | S | others | |
| A | 0.25 | 0.95 | 0.05 | 0..45 | *8 |
| B | 0.3 | 1.2 | 0.05 | 0.045 | *8 |
Yêu cầu thể chất
| Tensible strength Psi(MPa) | Yield strength Psi(MPa) | Elongation (Min %) | Gauge Length(in) | |
| A | Min. 48,000 (33.8kg/mm2) | Min. 30,000 (21.1kg/mm2) | e = 625,000x | 2 |
| B | Min. 60,000 (42.2kg/mm2) | Min. 35,000 (24.6kg/mm2) | e = 625,000x | 2 |
Kiểm tra theo yêu cầu
| Flattening Test | Bend Test | Hydrostatic Test | |
| H = Distance between Exterior sufaces | Anglex Inner radius | P = Test Pressure (psi) | |
| D = Outside Diameter | S = allowable fiber Stress ( psi) | ||
| ASTM A53 | Apply for standard weight and extra strong pipe of NB > in. | Apply for NB ≤2in 900 x 6D | Specified respectively in size and grade. |
| Ductility of the weld H= | When ordered for close coliling | Note : The Maximum pressure | |
| 1800 x 4D | NB ≤ 3 in. p = 2,500 psi | |
| Ductility away frome the weld H= | NB > 3 in. p = 2,800 psi | ||
| |||
| The test shall be made alternately with the weld at 0 deg. and at 90 deg. |
Thay đổi kích thước
| Outside Diameter | Wall Thickness | Length | Height of inside Flash | |
| ASTM A53 | NB ≤ 1 | + Not specified | – | |
| -12.5% | |||
| in. | ||||
| NB ≥ 2 in. | ||||
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