
ANSI/DIN Forged Stainless Steel Nickle Alloy Titanium Pipe Flanges (WN/BL/SO/Flat/RF/FF)
Product Introduction
Our company will uphold the good tradition of customer first and quality first for the purpose of providing customers with high quality and preferential Sanitary Tri Clamp Ball Valve, Ductile Iron Sluice Resilient Seat Gate Valve, High Pressure Pipe Fittings Tee Cross. We firmly believe that our company will be able to develop steadily and with high quality, and our employees will have long-term harvest and growth. We always believe that corporate responsibility is not only in satisfying customers now, but also in social welfare activities. In the course of business, we keep our word and promises and do not harm the interests of society and other related parties.


PN 1.0MPa (10 pressure) flat welded steel pipe flange(PL -RF)
Special flange for elastic butterfly valve, wafer butterfly valve (D371) and wafer check valve (H76)
Norminal Diameter | Pipe Outside Diameter | Link Size | Seal Surface Size | Flange Thickness | Flange Inside Diameter B1 | Groove Width | Approx Weight | |||||||
A1 | Flange outer diameter | Diameter of center circle of bolt hole | Diameter of bolt hole | Number of bolt holes | thread | |||||||||
DN | A | B | D | K | L | n | Th | d | f | C | A | B | b | (Kg) |
10 | 17.2 | 14 | 90 | 60 | 14 | 4 | M12 | 40 | 2 | 12 | 18 | 15 | 3 | 0.46 |
15 | 21.3 | 18 | 95 | 65 | 14 | 4 | M12 | 45 | 2 | 12 | 22 | 19 | 3 | 0.51 |
20 | 26.9 | 25 | 105 | 75 | 14 | 4 | M12 | 55 | 2 | 14 | 27.5 | 26 | 3 | 0.75 |
25 | 33.7 | 32 | 115 | 85 | 14 | 4 | M12 | 65 | 2 | 14 | 34.5 | 33 | 4 | 0.89 |
32 | 42.4 | 38 | 140/135 | 100 | 18 | 4 | M16 | 78 | 2 | 16 | 43.5 | 39 | 4 | 1.40 |
40 | 48.3 | 45 | 150/145 | 110 | 18 | 4 | M16 | 85 | 3 | 18 | 49.5 | 46 | 4 | 1.71 |
50 | 60.3 | 57 | 165/160 | 125 | 18 | 4 | M16 | 100 | 3 | 18 | 61.5 | 59 | 4 | 2.09 |
65 | 76.1 | 76 | 185/180 | 145 | 18 | 4 | M16 | 120 | 3 | 20 | 77.5 | 78 | 5 | 2.84 |
80 | 88.9 | 89 | 200/195 | 160 | 18 | 8 | M16 | 135 | 3 | 20 | 90.5 | 91 | 5 | 3.24 reference |
100 | 114.3 | 108 | 220/215 | 180 | 18 | 8 | M16 | 155 | 3 | 22 | 116 | 110 | 5 | 4.01 |
125 | 139.7 | 133 | 25Q/245 | 210 | 18 | 8 | M16 | 185 | 3 | 24 | 141.5 | 135 | 5 | 5.40 |
150 | 168.3 | 159 | 285/280 | 240 | 22/23 | 8 | M20 | 210 | 3 | 24 | 170.5 | 161 | 5 | 6.67 |
175 | 194 | 310 | 270 | 22/23 | 8 | M20 | 240 | 3 | 24 | 196 | 6 | 7.44 | ||
200 | 219.1 | 219 | 340/335 | 295 | 22/23 | 12 | M20 | 265 | 3 | 24 | 221.5 | 222 | 7 | 8.24 |
225 | 245 | 365 | 325 | 22/23 | 12 | M20 | 295 | 3 | 24 | 248 | 8 | 9.30 | ||
250 | 273 | 273 | 405 | 355 | 22/23 | 12 | M20 | 320 | 3 | 26 | 276.5 | 276 | 9 | 10.7 |
300 | 323.9 | 325 | 460 | 410 | 22/23 | 12 | M20 | 375 | 4 | 28 | 327.5 | 328 | 9 | 12.9 |
350 | 355.6 | 377 | 520 | 470 | 22/23 | 16 | M20 | 436 | 4 | 28 | 359.5 | 380 | 10 | 15.9 |
400 | 406.4 | 426 | 580 | 525 | 26/25 | 16 | M24/M22 | 485 | 4 | 30 | 411 | 430 | 10 | 21.8 |
450 | 457 | 480 | 640 | 585 | 26/25 | 20 | M24/M22 | 545 | 4 | 30 | 462 | 484 | 10 | 24.4 |
500 | 508 | 530 | 715/705 | 650 | 26/25 | 20 | M24/M22 | 608 | 4 | 32 | 513.5 | 534 | 10 | 27.7 |
600 | 610 | 630 | 840 | 770 | 30 | 20 | M27 | 718 | 5 | 36 | 616.5 | 634 | 10 | 39.4 |
700 | 711 | 720 | 910 | 840 | 30 | 24 | M27 | 788 | 5 | 36 | 715 | 724 | 10 | 53 |
800 | 813 | 820 | 1025/1020 | 950 | 34 | 24 | M30 | 898 | 5 | 38 | 817 | 824 | 10 | 67 |
900 | 914 | 920 | 1125/1120 | 1050 | 34 | 28 | M30 | 998 | 5 | 38 | 918 | 924 | 10 | 76 reference resources |
1000 | 1016 | 1020 | 1255 | 1170 | 36/34 | 28 | M33/M30 | 1110 | 5 | 38 | 1020 | 1024 | 10 | 90 reference |
1100 | 1120 | 1355 | 1270 | 36 | 32 | M33 | 1215 | 5 | 42 | 1124 | 12 | 125 reference | ||
1200 | 1219 | 1220 | 1485 | 1390 | 39/41 | 32 | M36 | 1325 | 5 | 44 | 1223 | 1224 | 12 | 143 reference |
1300 | 1320 | 1585 | 1490 | 41 | 32 | M36 | 1425 | 5 | 46 | 1324 | 12 | 180 reference | ||
1400 | 1422 | 1420 | 1685 | 1590 | 42/48 | 36 | M39/M42 | 1525 | 5 | 48 | 1426 | 1424 | 14 | 195 reference |
1500 | 1520 | 1820 | 1710 | 48 | 36 | M42 | 1640 | 5 | 50 | 1524 | 14 | 225 reference | ||
1600 | 1626 | 1620 | 1930 | 1820 | 48/54 | 40 | M45/M48 | 1750 | 5 | 52 | 1630 | 1624 | 16 | 275 reference |
1750 | 2080 | 1970 | 54 | 44 | M48 | 1900 | 5 | 54 | 16 | 310 reference | ||||
1800 | 1829 | 1820 | 2130 | 2020 | 48/54 | 44 | M45/M48 | 1950 | 5 | 56 | 1833 | 1824 | 17 | 340 reference |
2000 | 2032 | 2020 | 2345 | 2230 | 48/54 | 48 | M45/M48 | 2150 | 5 | 60 | 2036 | 2024 | 18 | 420 reference |
2200 | 2220 | 2555 | 2440 | 56 | 52 | M52 | 2370 | 6 | 80 | 2224 | 20 | 660 reference | ||
2400 | 2420 | 2765 | 2650 | 56 | 56 | M52 | 2570 | 6 | 90 | 2424 | 20 | 840 reference | ||
PN 1.6MPa (16 pressure) flat welded steel pipe flange(PL -RF)
Norminal Diameter | Pipe Outside Diameter | Link Sice | Seal Surface Size | Flange Thickness | Flange Inside Diameter B1 | Groove Width | Approx Weight | |||||||
A1 | Flange outer diameter | Diameter of center circle of bolt hole | Diameter of bolt hole | Number of bolt holes | thread | |||||||||
DN | A | B | D | K | L | n | Th | d | f | C | A | B | b | (Kg) |
10 | 17.2 | 14 | 90 | 60 | 14 | 4 | M12 | 40 | 2 | 14 | 18 | 15 | 3 | 0.55 |
15 | 21.3 | 18 | 95 | 65 | 14 | 4 | M12 | 45 | 2 | 14 | 22 | 19 | 3 | 0.71 |
20 | 26.9 | 25 | 105 | 75 | 14 | 4 | M12 | 55 | 2 | 16 | 27.5 | 26 | 3 | 0.87 |
25 | 33.7 | 32 | 115 | 85 | 14 | 4 | M12 | 65 | 2 | 18 | 34.5 | 33 | 4 | 1.18 |
32 | 42.4 | 38 | 140/135 | 100 | 18 | 4 | M16 | 78 | 2 | 18 | 43.5 | 39 | 4 | 1.60 |
40 | 48.3 | 45 | 150/145 | 110 | 18 | 4 | M16 | 85 | 3 | 20 | 49.5 | 46 | 4 | 2.00 |
50 | 60.3 | 57 | 165/160 | 125 | 18 | 4 | M16 | 100 | 3 | 22 | 61.5 | 59 | 4 | 2.61 |
65 | 76.1 | 76 | 185/180 | 145 | 18 | 4 | M16 | 120 | 3 | 24 | 77.5 | 78 | 5 | 3.45 |
80 | 88.9 | 89 | 200/195 | 160 | 18 | 8 | M16 | 135 | 3 | 24 | 90.5 | 91 | 5 | 3.71 |
100 | 114.3 | 108 | 220/215 | 180 | 18 | 8 | M16 | 155 | 3 | 26 | 116 | 110 | 5 | 4.80 |
125 | 139.7 | 133 | 25Q/245 | 210 | 18 | 8 | M16 | 185 | 3 | 28 | 141.5 | 135 | 5 | 6.47 |
150 | 168.3 | 159 | 285/280 | 240 | 22/23 | 8 | M20 | 210 | 3 | 28 | 170.5 | 161 | 5 | 7.92 |
175 | 194 | 310 | 270 | 22/23 | 8 | M20 | 240 | 3 | 28 | 196 | 6 | 8.81 | ||
200 | 219.1 | 219 | 34QZ335 | 295 | 22/23 | 12 | M20 | 265 | 3 | 30 | 221.5 | 222 | 7 | 10.10 |
225 | 245 | 365 | 325 | 22/23 | 12 | M20 | 295 | 3 | 30 | 248 | 8 | 11.20 | ||
250 | 273 | 273 | 405 | 355 | 26/25 | 12 | M24/M22 | 320 | 3 | 32 | 276.5 | 276 | 9 | 15.70 |
300 | 323.9 | 325 | 460 | 410 | 26/25 | 12 | M24^M22 | 375 | 4 | 32 | 327.5 | 328 | 9 | 18.10 |
350 | 355.6 | 377 | 520 | 470 | 26/25 | 16 | M24/M22 | 436 | 4 | 34 | 359.5 | 380 | 10 | 23.30 |
400 | 406.4 | 426 | 580 | 525 | 30 | 16 | M27 | 485 | 4 | 38 | 411 | 430 | 10 | 31.00 |
450 | 457 | 480 | 640 | 585 | 30 | 20 | M27 | 545 | 4 | 42 | 462 | 484 | 10 | 40.20 |
500 | 508 | 530 | 715/705 | 650 | 34 | 20 | M30 | 608 | 4 | 48 | 513.5 | 534 | 10 | 55.20 |
600 | 610 | 630 | 840 | 770 | 36/41 | 20 | M33/M36 | 718 | 5 | 50 | 616.5 | 634 | 10 | 80.80 |
700 | 711 | 720 | 910 | 840 | 36/41 | 24 | M33/M36 | 788 | 5 | 50 | 715 | 724 | 10 | 106.2 |
800 | 813 | 820 | 1025/1020 | 950 | 39/41 | 24 | M36 | 898 | 5 | 52 | 817 | 824 | 10 | 130.5 |
900 | 914 | 920 | 1125/1120 | 1050 | 39/41 | 28 | M36 | 998 | 5 | 44 | 918 | 924 | 10 | 91reference |
1000 | 1016 | 1020 | 1255 | 1170 | 42/48 | 28 | M39/M42 | 1110 | 5 | 46 | 1020 | 1024 | 10 | 127reference |
1100 | 1120 | 1355 | 1270 | 42 | 32 | M39 | 1215 | 5 | 50 | 1124 | 12 | 150reference | ||
1200 | 1219 | 1220 | 1485 | 1390 | 48/54 | 32 | M45/M48 | 1325 | 5 | 52 | 1223 | 1224 | 12 | 186reference |
1300 | 1320 | 1585 | 1490 | 48 | 32 | M45 | 1425 | 5 | 54 | 1324 | 12 | 215reference | ||
1400 | 1422 | 1420 | 1685 | 1590 | 48/54 | 36 | M45/M48 | 1525 | 5 | 58 | 1426 | 1424 | 14 | 245reference |
1500 | 1520 | 1820 | 1710 | 56 | 36 | M52 | 1640 | 5 | 60 | 1524 | 14 | 32。reference | ||
1600 | 1626 | 1620 | 1930 | 1820 | 55/58 | 40 | M52 | 1750 | 5 | 64 | 1630 | 1624 | 16 | 360reference |
1750 | 2080 | 1970 | 58 | 44 | M52 | 1900 | 5 | 66 | 16 | 400reference | ||||
1800 | 1829 | 1820 | 2130 | 2020 | 55/58 | 44 | M52 | 1950 | 5 | 68 | 1833 | 1824 | 17 | 430reference |
2000 | 2032 | 2020 | 2345 | 2230 | 60 | 48 | M56 | 2150 | 5 | 70 | 2036 | 2024 | 18 | 515reference |
2200 | 2220 | 2555 | 2440 | 62 | 52 | M56 | 2370 | 6 | 90 | 2224 | 20 | 750reference | ||
2400 | 2420 | 2765 | 2650 | 62 | 56 | M56 | 2570 | 6 | 100 | 2424 | 20 | 950reference | ||
PN 2.5MPa (25 pressure) flat welded steel pipe flange(PL -RF)
Norminal Diameter | Pipe Outside Diameter | Link Size | Seal Surface Size | Flange Thickness | Flange Inside Diameter B1 | Groove Width | Approx Weight | |||||||
A1 | Flange outer diameter | Diameter of center circle of bolt hole | Diameter of bolt hole | Number of bolt holes | thread | |||||||||
DN | A | B | D | K | L | n | Th | d | f | C | A | B | b | (Kg) |
10 | 17.2 | 14 | 90 | 60 | 14 | 4 | M12 | 40 | 2 | 16 | 18 | 15 | 3 | 0.64 |
15 | 21.3 | 18 | 95 | 65 | 14 | 4 | M12 | 45 | 2 | 16 | 22 | 19 | 3 | 0.80 |
20 | 26.9 | 25 | 105 | 75 | 14 | 4 | M12 | 55 | 2 | 18 | 27.5 | 26 | 3 | 0.9g |
25 | 33.7 | 32 | 115 | 85 | 14 | 4 | M12 | 65 | 2 | 18 | 34.5 | 33 | 4 | 1.18 |
32 | 42.4 | 38 | 140/135 | 100 | 18 | 4 | M16 | 78 | 2 | 20 | 43.5 | 39 | 4 | 1.96 |
40 | 48.3 | 45 | 150/145 | 110 | 18 | 4 | M16 | 85 | 3 | 22 | 49.5 | 46 | 4 | 2.60 |
50 | 60.3 | 57 | 165/160 | 125 | 18 | 4 | M16 | 100 | 3 | 24 | 61.5 | 59 | 4 | 2.71 |
65 | 76.1 | 76 | 185/180 | 145 | 18 | 8 | M16 | 120 | 3 | 24 | 77.5 | 78 | 5 | 3.22 |
80 | 88.9 | 89 | 200/195 | 160 | 18 | 8 | M16 | 135 | 3 | 26 | 90.5 | 91 | 5 | 4.06 |
100 | 114.3 | 108 | 235/230 | 190 | 22/23 | 8 | M20 | 160 | 3 | 28 | 116 | 110 | 5 | 6.00 |
125 | 139.7 | 133 | 270 | 220 | 26/25 | 8 | M24/M22 | 188 | 3 | 30 | 141.5 | 135 | 5 | 8.26 |
150 | 168.3 | 159 | 300 | 250 | 26/25 | 8 | M24/M22 | 218 | 3 | 30 | 170.5 | 161 | 5 | 10.40 |
175 | 194 | 330 | 280 | 26/25 | 8 | M24/M22 | 248 | 3 | 32 | 196 | 6 | 11.90 | ||
200 | 219.1 | 219 | 360 | 310 | 26/25 | 12 | M24/M22 | 278 | 3 | 32 | 221.5 | 222 | 7 | 14.50 |
225 | 245 | 395 | 340 | 30 | 12 | M27 | 302 | 3 | 34 | 248 | 8 | 17.00 | ||
250 | 273 | 273 | 425 | 370 | 30 | 12 | M27 | 332 | 3 | 34 | 276.5 | 276 | 9 | 18.90 |
300 | 323.9 | 325 | 485 | 430 | 30 | 16 | M27 | 390 | 4 | 36 | 327.5 | 328 | 9 | 26.80 |
350 | 355.6 | 377 | 555/550 | 490 | 34 | 16 | M30 | 448 | 4 | 42 | 359.5 | 380 | 10 | 34.35 |
400 | 406.4 | 426 | 620/610 | 550 | 36/34 | 16 | M33/M30 | 505 | 4 | 44 | 411 | 430 | 10 | 44.90 |
450 | 457 | 480 | 670/660 | 600 | 36/34 | 20 | M33/M30 | 555 | 4 | 48 | 462 | 484 | 10 | 51.92 |
500 | 508 | 530 | 730 | 660 | 36/41 | 20 | M33/M36 | 610 | 4 | 52 | 513.5 | 534 | 10 | 67.30 |
600 | 610 | 630 | 845/840 | 770 | 39/41 | 20 | M36 | 718 | 5 | 56 | 616.5 | 634 | 10 | 95.20 |
700 | 711 | 720 | 960/955 | 875 | 42/48 | 24 | M39/M42 | 815 | 5 | 60 | 715 | 724 | 10 | 116 |
800 | 813 | 820 | 1085/1070 | 990 | 48 | 24 | M45/M42 | 930 | 5 | 64 | 817 | 824 | 10 | 150.2 |
900 | 914 | 920 | 1185/1180 | 1090 | 48/54 | 28 | M45/M48 | 1025 | 5 | 58 | 918 | 924 | 10 | 160reference |
1000 | 1016 | 1020 | 1320/1305 | 1210 | 55/58 | 28 | M52 | 1140 | 5 | 62 | 1020 | 1024 | 10 | 210reference |
1100 | 1120 | 1420 | 1310 | 56 | 32 | M52 | 1240 | 5 | 66 | 1124 | 12 | 255reference | ||
1200 | 1219 | 1220 | 1530/1525 | 1420 | 55/58 | 32 | M52 | 1350 | 5 | 70 | 1223 | 1224 | 12 | 300 reference |
1300 | 1320 | 1645 | 1530 | 62 | 32 | M56 | 1450 | 5 | 74 | 1324 | 12 | 355reference | ||
1400 | 1422 | 1420 | 1755/1750 | 1640 | 60/65 | 36 | M56 | 1560 | 5 | 76 | 1426 | 1424 | 14 | 450reference |
1500 | 1520 | 1865 | 1750 | 62 | 36 | M56 | 1670 | 5 | 80 | 1524 | 16 | 480 reference | ||
1600 | 1626 | 1620 | 1975 | 1860 | 60 | 40 | M56 | 1780 | 5 | 84 | 1630 | 1624 | 16 | 570reference |
1800 | 1829 | 1820 | 2195 | 2070 | 68 | 44 | M64 | 1985 | 5 | 90 | 1833 | 1824 | 17 | 700reference |
2000 | 2032 | 2020 | 2425 | 2300 | 68 | 48 | M64 | 2210 | 5 | 96 | 2036 | 2024 | 18 | 900reference |
PN 4.0MPa (40 pressure) flat welded steel pipe flange(PL -RF)
Norminal Diameter | Pipe Outside Diameter | Link Size | Seal Surface Size | Flange Thickness | Flange Inside Diameter B1 | Groove Width | Approx Weight | |||||||
A1 | Flange outer diameter | Diameter of center circle of bolt hole | Diameter of bolt hole | Number of bolt holes | thread | |||||||||

PN 6.3MPa (63 pressure) flat welded steel pipe flange(PL -RF)
Norminal Diameter | Pipe Outside Diameter | Link Size | Seal Surface Size | Flange Thickness | Flange Inside Diameter B1 | Groove Width | Approx Weight | |||||||
A1 | Flange outer diameter | Diameter of center circle of bolt hole | Diameter of bolt hole | Number of bolt holes | thread | |||||||||

Product Description:
Flat welding flange with neck: it is a kind of flange that extends steel pipe and pipe fittings into the flange and connects with equipment or pipeline through fillet weld
Corresponding standards of flat welded steel pipe flange series: GB / T9119-2000,JB81-94, HGJ45-91, HG20593-97
Welding flange material: 201,304,316,316l,321,202, carbon steel, alloy steel, etc
The sealing surfaces of flange with neck are as follows:RF, FM, M, T, G, FF.
Diameter range of flat welding flange with neck: DN 100 ~ DN 600
Application:
it is widely used in chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, fire protection, electric power, aerospace, shipbuilding and other basic engineering.
Price
Our price fluctuates with raw materials and exchange rate.Please leave your contact information and give you a new quotation as soon as possible.
Packing
wooden case, wooden pallet or packing method specified by customers.
Note: we can produce products of various standards, models and materials according to user's requirements
Our company insists on serving the market with science and technology, promoting the rapid transformation of product technology into productivity, and constantly providing users with appropriate and high-quality ANSI/DIN Forged Stainless Steel Nickle Alloy Titanium Pipe Flanges (WN/BL/SO/Flat/RF/FF). We have devoted ourselves to research in the technical field, and independently developed many products, which have been widely used and recognized in the industry. The premise of our existence and operation is in line with national interests, and meeting the needs of customers is the inevitable condition for us to win the market.
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