碳鋼螺紋法蘭是指采用螺紋與管道連接的一種法蘭。這種連接方式簡單快捷，不需要復(fù)雜的焊接或螺栓固定，具有安裝、維修方便的特點，可在一些現(xiàn)場不允許焊接的管線上使用。螺紋法蘭廣泛應(yīng)用于石油、化工、電力、冶金、制藥等工業(yè)領(lǐng)域，用于連接各種管道、閥門、泵等設(shè)備。
碳鋼螺紋法蘭的規(guī)格
Size Range | 1/2" - 24" / DN15 - DN600 |
Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
Standard | ASME B16.5, EN1092-1 |
Carbon Steel | ASTM A105 / A105N |
美標(biāo)和歐標(biāo)碳鋼法蘭的材質(zhì)差異
碳鋼的生產(chǎn)標(biāo)準(zhǔn)有ASME B16.5和EN1092-1兩種，其中ASME B16.5的材料等級為ASTM A105,EN1092-1的材料標(biāo)準(zhǔn)有P235GH，250GH，280GH等。
ASTM A105 化學(xué)成分
CHEMICAL | LIMITS | C | Mn | P | S | Si | Cu | Ni | Cr | Mo | V |
ASTM A105 | MIN |
| 0.60 |
|
| 0.10 |
|
|
|
|
|
MAX | 0.35 | 1.05 | 0.035 | 0.040 | 0.35 | 0.40 | 0.40 | 0.30 | 0.12 | 0.08 |
機械性能
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % | HARDNESS |
ASTM A105 | 485 min | 250 min | 22 min | 30 min | 197 max |
CHEMICAL | LIMITS | C | Si | Mn | P | S | Cr | Mo | Ni | Al | Cu | Nb | Ti | V | Cr+Cu+Mo+Ni |
P235GH(1.0345) | MIN |
|
|
|
|
|
|
|
| 0.02 |
|
|
|
|
|
MAX | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 |
| 0.3 | 0.01 | 0.04 | 0.02 | 0.7 |
機械性能
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | Impact Properties |
P235GH(1.0345) | 360-500 | 235 min | 25 min | 40min(0℃) |
美標(biāo)法蘭遵循的是以美國ASME為代表的美洲法蘭標(biāo)準(zhǔn)體系，該體系具有嚴(yán)格的規(guī)范和標(biāo)準(zhǔn)，確保了產(chǎn)品的互換性和可靠性。相比之下，國際市場上的互換性可能受到一定限制，在需要承受高溫高壓的工業(yè)環(huán)境中往往對法蘭的強度和密封性有極高的要求，而美標(biāo)法蘭能夠很好地滿足這些要求。這種性能表現(xiàn)使得美標(biāo)法蘭在石油、化工、天然氣等行業(yè)中得到廣泛應(yīng)用。
碳鋼螺紋法蘭的尺寸和重量
螺紋法蘭的尺寸從1/2" -到24"，壓力等級有150#，300#， 600#, 900#, 1500#, 2500#
Class 150螺紋法蘭尺寸和重量
NPS
| A | C | D | E | F | G | H | I | J | W |
inch | inch | inch | inch | inch | inch | No. of Holes
| inch | inch | kg/pc |
mm | mm | mm | mm | mm | mm | mm | mm |
1/2 | 3.50 | 0.44 | 0.62 | 0.62 | 1.19 | 1.38 | 4 | 0.62 | 2.38 | 0.39 |
88.90 | 11.20 | 15.70 | 15.70 | 30.20 | 35.10 | 15.70 | 60.45 |
3/4 | 3.88 | 0.50 | 0.62 | 0.62 | 1.50 | 1.69 | 4 | 0.62 | 2.75 | 0.56 |
98.60 | 12.70 | 15.70 | 15.70 | 38.10 | 42.90 | 15.70 | 69.85 |
1 | 4.25 | 0.56 | 0.69 | 0.69 | 1.94 | 2.00 | 4 | 0.62 | 3.12 | 0.78 |
108.00 | 14.20 | 17.50 | 17.50 | 49.30 | 50.80 | 15.70 | 79.25 |
1 1/4 | 4.62 | 0.62 | 0.81 | 0.81 | 2.31 | 2.50 | 4 | 0.62 | 3.50 | 1.03 |
117.30 | 15.70 | 20.60 | 20.60 | 58.70 | 63.50 | 15.70 | 88.90 |
1 1/2 | 5.00 | 0.69 | 0.88 | 0.88 | 2.56 | 2.88 | 4 | 0.62 | 3.88 | 1.32 |
127.00 | 17.50 | 22.40 | 22.30 | 65.00 | 73.15 | 15.70 | 98.60 |
2 | 6.00 | 0.75 | 1.00 | 1.00 | 3.06 | 3.62 | 4 | 0.75 | 4.75 | 2.06 |
152.40 | 19.10 | 25.40 | 25.40 | 77.70 | 91.90 | 0.75 | 4.75 |
2 1/2 | 7.00 | 0.88 | 1.12 | 1.12 | 3.56 | 4.12 | 4 | 0.75 | 5.50 | 3.28 |
177.80 | 22.40 | 28.40 | 28.40 | 90.40 | 104.60 | 19.10 | 139.70 |
3 | 7.50 | 0.94 | 1.19 | 1.19 | 4.25 | 5.00 | 4 | 0.75 | 6.00 | 3.85 |
190.50 | 23.90 | 30.20 | 30.20 | 108.00 | 127.00 | 19.10 | 152.40 |
3 1/3 | 8.50 | 0.94 | 1.25 | 1.25 | 4.81 | 5.50 | 8 | 0.75 | 7.00 | 4.81 |
215.90 | 23.90 | 31.75 | 31.75 | 122.20 | 139.70 | 19.10 | 177.80 |
4 | 9.00 | 0.94 | 1.31 | 1.31 | 5.31 | 6.19 | 8 | 0.75 | 7.50 | 5.3 |
228.60 | 23.90 | 33.30 | 33.30 | 134.90 | 157.20 | 19.10 | 190.50 |
5 | 10.00 | 0.94 | 1.44 | 1.44 | 6.44 | 7.31 | 8 | 0.88 | 8.50 | 6.07 |
254.00 | 23.90 | 36.60 | 36.60 | 163.60 | 185.70 | 22.40 | 215.90 |
6 | 11.00 | 1.00 | 1.56 | 1.56 | 7.56 | 8.50 | 8 | 0.88 | 9.50 | 7.45 |
279.40 | 25.40 | 39.60 | 39.60 | 192.00 | 215.90 | 22.40 | 241.30 |
8 | 13.50 | 1.12 | 1.75 | 1.75 | 9.69 | 10.62 | 8 | 0.88 | 11.75 | 12.1 |
342.90 | 28.40 | 44.50 | 44.50 | 246.10 | 269.70 | 22.40 | 298.50 |
10 | 16.00 | 1.19 | 1.94 | 1.94 | 12.00 | 12.75 | 12 | 1.00 | 14.25 | 16.5 |
406.40 | 30.20 | 49.30 | 49.30 | 304.80 | 323.90 | 25.40 | 362.00 |
12 | 19.00 | 1.25 | 2.19 | 2.19 | 14.38 | 15.00 | 12 | 1.00 | 17.00 | 26.2 |
482.60 | 31.75 | 55.60 | 55.60 | 365.30 | 381.00 | 25.40 | 431.80 |
14 | 21.00 | 1.38 | 2.25 | 2.25 | 15.75 | 16.25 | 12 | 1.12 | 18.75 | 34.6 |
533.40 | 35.10 | 57.15 | 57.15 | 400.10 | 412.70 | 28.40 | 476.30 |
16 | 23.50 | 1.44 | 2.50 | 2.50 | 18.00 | 18.50 | 16 | 1.12 | 21.25 | 44.8 |
596.90 | 36.60 | 63.50 | 63.50 | 457.20 | 469.90 | 28.40 | 539.80 |
18 | 25.00 | 1.56 | 2.69 | 2.69 | 19.88 | 21.00 | 16 | 1.25 | 22.75 | 48.9 |
635.00 | 39.60 | 68.30 | 68.30 | 505.00 | 533.40 | 31.75 | 577.90 |
20 | 27.50 | 1.69 | 2.88 | 2.88 | 22.00 | 23.00 | 20 | 1.25 | 25.00 | 61.9 |
698.50 | 42.90 | 73.15 | 73.15 | 558.80 | 584.20 | 31.75 | 635.00 |
24 | 32.00 | 1.88 | 3.25 | 3.25 | 26.12 | 27.25 | 20 | 1.38 | 29.50 | 86.9 |
812.80 | 47.80 | 82.60 | 82.60 | 663.40 | 692.20 | 35.10 | 749.30 |
Class 900螺紋法蘭尺寸和重量
| FlangeData | Hub | Raised | DrillingData |
| Weight |
| Face |
| Nominal PipeSize |
| A | B | C | D | E | F | G | H | I | J | kg/
piece |
| Outside | Diameter | Counter- | Flange | Overall | Threaded | Hub | Face | Number
of Holes | BoltHole | Diameter |
| Diameter | Overall | bore
min | Thickness
min | Length | length
min | Diameter | Diameter | Diameter | of Circle
of Holes |
|
| in | in | in | in | in | in | in | in | in | in |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm |
| 1/2 | 0.84 | 4.75 | 0.93 | 0.88 | 1.25 | 0.88 | 1.5 | 1.38 | 4 | 0.88 | 3.25 | 1.74 |
| 21.3 | 120.6 | 23.6 | 22.3 | 31.7 | 22.3 | 38.1 | 35.1 | 22.3 | 82.5 |
| 3/4 | 1.05 | 5.12 | 1.14 | 1 | 1.38 | 1 | 1.75 | 1.69 | 4 | 0.88 | 3.5 | 2.34 |
| 26.7 | 130 | 29 | 25.4 | 35 | 25.4 | 44.4 | 42.9 | 22.3 | 88.9 |
| 1 | 1.315 | 5.88 | 1.41 | 1.12 | 1.62 | 1.12 | 2.06 | 2 | 4 | 1 | 4 | 3.44 |
| 33.4 | 149.3 | 35.8 | 28.4 | 41.1 | 28.4 | 52.3 | 50.8 | 25.4 | 101.6 |
| 1 1/4 | 1.66 | 6.25 | 1.75 | 1.12 | 1.62 | 1.19 | 2.5 | 2.5 | 4 | 1 | 4.38 | 3.91 |
| 42.2 | 158.7 | 44.4 | 28.4 | 41.1 | 30.2 | 63.5 | 63.5 | 25.4 | 111.2 |
| 1 1/2 | 1.9 | 7 | 1.99 | 1.25 | 1.75 | 1.25 | 2.75 | 2.88 | 4 | 1.12 | 4.88 | 5.36 |
| 48.3 | 177.8 | 50.5 | 31.7 | 44.5 | 31.7 | 69.85 | 73.15 | 28.4 | 123.9 |
| 2 | 2.375 | 8.5 | 2.5 | 1.5 | 2.25 | 1.5 | 4.12 | 3.62 | 8 | 1 | 6.5 | 9.85 |
| 60.3 | 215.9 | 63.5 | 38.1 | 57.15 | 38.1 | 104.6 | 91.9 | 25.4 | 165.1 |
| 2 1/2 | 2.875 | 9.62 | 3 | 1.62 | 2.5 | 1.88 | 4.88 | 4.12 | 8 | 1.12 | 7.5 | 13.7 |
| 73 | 244.3 | 76.2 | 41.1 | 63.5 | 47.7 | 123.9 | 104.6 | 28.4 | 190.5 |
| 3 | 3.5 | 9.5 | 3.63 | 1.5 | 2.12 | 1.62 | 5 | 5 | 8 | 1 | 7.5 | 11.6 |
| 88.9 | 241.3 | 92.2 | 38.1 | 53.8 | 41.1 | 127 | 127 | 25.4 | 190.5 |
| 4 | 4.5 | 11.5 | 4.63 | 1.75 | 2.75 | 1.88 | 6.25 | 6.19 | 8 | 1.25 | 9.25 | 19.7 |
| 114.3 | 292.1 | 117.6 | 44.4 | 69.85 | 47.8 | 158.7 | 157.2 | 31.7 | 234.9 |
| 5 | 5.563 | 13.75 | 5.69 | 2 | 3.12 | 2.12 | 7.5 | 7.31 | 8 | 1.38 | 11 | 31.9 |
| 141.3 | 349.2 | 144.5 | 50.8 | 79.25 | 53.8 | 190.5 | 185.7 | 35 | 279.4 |
| 6 | 6.625 | 15 | 6.75 | 2.19 | 3.38 | 2.25 | 9.25 | 8.5 | 12 | 1.25 | 12.5 | 41.1 |
| 168.3 | 381 | 171.4 | 55.6 | 85.8 | 57.15 | 234.9 | 215.9 | 31.7 | 317.5 |
| 8 | 8.625 | 18.5 | 8.75 | 2.5 | 4 | 2.5 | 11.75 | 10.62 | 12 | 1.5 | 15.5 | 70.7 |
| 219.1 | 469.9 | 222.2 | 63.5 | 101.6 | 63.5 | 298.4 | 269.7 | 38.1 | 393.7 |
| 10 | 10.75 | 21.5 | 10.88 | 2.75 | 4.25 | 2.81 | 14.5 | 12.75 | 16 | 1.5 | 18.5 | 101 |
| 273 | 546.1 | 276.3 | 69.85 | 107.9 | 71.4 | 368.3 | 323.9 | 38.1 | 469.9 |
| 12 | 12.75 | 24 | 12.94 | 3.12 | 4.62 | 3 | 16.5 | 15 | 20 | 1.5 | 21 | 133 |
| 323.8 | 609.6 | 328.7 | 79.4 | 117.3 | 76.2 | 419.1 | 381 | 38.1 | 533.4 |
| 14 | 14 | 25.25 | 14.19 | 3.38 | 5.12 | 3.25 | 17.75 | 16.25 | 20 | 1.62 | 22 | 153 |
| 355.6 | 641.3 | 360.4 | 85.7 | 130 | 82.5 | 450.8 | 412.7 | 41.1 | 558.8 |
| 16 | 16 | 27.75 | 16.19 | 3.5 | 5.25 | 3.38 | 20 | 18.5 | 20 | 1.75 | 24.25 | 185 |
| 406.4 | 704.8 | 411.2 | 88.9 | 133.3 | 85.9 | 508 | 469.9 | 44.4 | 618.9 |
| 18 | 18 | 31 | 18.19 | 4 | 6 | 3.5 | 22.25 | 21 | 20 | 2 | 27 | 258 |
| 457.2 | 787.4 | 462 | 101.6 | 152.4 | 88.9 | 565.1 | 533.4 | 50.8 | 685.8 |
| 20 | 20 | 33.75 | 20.19 | 4.25 | 6.25 | 3.62 | 24.5 | 23 | 20 | 2.12 | 29.5 | 317 |
| 508 | 857.2 | 512.8 | 107.9 | 158.7 | 91.9 | 622.3 | 584.2 | 53.8 | 749.3 |
| 24 | 24 | 41 | 24.19 | 5.5 | 8 | 4 | 29.5 | 27.25 | 20 | 2.62 | 35.5 | 606 |
| 609.6 | 1041.4 | 614.4 | 139.7 | 203.2 | 101.6 | 749.3 | 692.2 | 66.55 | 901.7 |
螺紋法蘭的用途
●工業(yè)管道連接
螺紋法蘭被廣泛用于連接管道系統(tǒng)中的管道、閥門和設(shè)備，確保整個系統(tǒng)的完整性和功能性。通過使用鍛制法蘭，可以實現(xiàn)管道之間的緊密連接，同時提供可靠的密封性能，有效防止介質(zhì)泄漏，保障工業(yè)生產(chǎn)的連續(xù)性和安全性。
●石油和天然氣行業(yè)
它們被廣泛應(yīng)用于油井的管道系統(tǒng)中，用于連接不同部分的管道，確保油氣的順暢流動。此外，這些法蘭還用于輸送管道的建設(shè)，它們能夠在長距離輸送過程中保持管道的完整性和密封性，防止油氣泄漏，確保生產(chǎn)安全。
●化工和制藥行業(yè)
螺紋法蘭被廣泛應(yīng)用于化工反應(yīng)器、儲罐以及復(fù)雜的管道系統(tǒng)中，確保了生產(chǎn)過程的連續(xù)性和安全性。這些法蘭不僅需要承受化學(xué)反應(yīng)中可能產(chǎn)生的高壓和高溫，還要能夠抵抗各種腐蝕性介質(zhì)的侵蝕，從而保證設(shè)備的長期穩(wěn)定運行。
