Pipe Fittings

Weld Neck Flange-307

Weld Neck Flange

Application:

Welding neck flange also called WN flange,is a flange with a neck butt welded to the pipe.Welding neck flange is not easy to be deformed, well sealed, and widely used. Welding neck flange is suitable for pipelines with large fluctuations in pressure or temperature or pipelines with high temperature, high pressure≤25.0Mpa and low temperature.It is also used for conveying expensive, flammable and explosive media on the pipeline with nominal pressure around PN16MPa.Butt weld flanges are the most commonly used connection for stainless steel valves.The sealing surface of butt welding flange RF,FF, MF and so on.

WN flange is not easy to deform, the sealing is good, and the price is relatively cheap. It is suitable for occasions with high pressure, high temperature and large pipe diameter.

As the welding neck flange manufacturers in China,Eathumetals can also supply OEM flanges according to customers’drawings or designs.

Welcome to contact us for more information.


Specification:


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 150 Weld Neck Flange

Pipe
Flange


Hub
Raised FaceDrilling Template

Approx. Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,843,500,620,441,880,841,191,3840,622,381,1

21,388,915,711,247,821,330,235,1
15,760,50,71
3/4"1,053,880,820,502,061,051,501,6940,622,751,6

26,798,620,812,752,326,738,142,9
15,769,90,71
1"13154,251,050,562,191,321,942,0040,623,122,2

33,4108,026,714,255,633,549,350,8
15,779,21,01
1 1/4"1,664,621,380,622,251,662,312,5040,623,502,9

42,2117,335,115,757,242,258,763,5
15,788,91,33
1 1/2"1,905,001,610,692,441,902,562,8840,623,883,8

48,3127,040,917,562,048,365,073,2
15,798,61,72
2"23756,002,070,752,502,383,063,6240,754,755,7

60,3152,452,619,163,560,577,791,9
19,1120,72,58
2 1/2"28757,002,470,882,752,883,564,1240,755,509,1

73,0177,862,722,469,973,290,4104,6
19,1139,74,11
3"3,507,503,070,942,753,504,255,0040,756,0010,8

88,9190,578,028,969,688,9108,0127,0
19,1152,44,92
3 1/2"4,008,503,550,942,814,004,815,5080,757,0013,4

101,6215,990,228,971,4101,6122,2139,7
19,1177,86,08
4"4,509,004,030,943,004,505,316,1980,757,5015,1

114,3228,6102,428,976,2114,3134,9157,2
19,1190,56,84
5"556310,005,050,943,505,566,447,3180,888,5018,9

141,3254,0128,328,988,9141,2163,6185,7
22,4215,98,56
6"662511,006,071,003,506,637,568,5080,889,5023,3

168,3279,4154,225,488,9168,4192,0215,9
22,4241,310,6
8"862513,507,981,124,008,639,6910,6280,8811,7538,8

219,1342,9202,728,4101,6219,2246,1269,7
22,4298,517,6
10"10,7516,0010,021,194,0010,7512,0012,75121,0014,2553,0

273406,4254,530,2101,6273,1304,8323,9
25,4362,024,0
12"12,7519,0012,001,254,5012,7514,3815,00121,0017,0080,4

323,8482,6304,831,8114,3323,8365,3381,0
25,4431,836,5
14"14,021,00
1,385,0014,0015,7516,25121,1218,75107

355,6533,4
35,1127,0355,6400,1412,8
28,4476,348,4
16"16,023,50
1,445,0016,0018,0018,50161,1221,25134

406,4596,9
36,6127,0406,4457,2469,9
28,4539,860,6
18"18,025,00
1,565,5018,0019,8821,00161,2522,75151

457,2635,0
39,6139,7457,2505,0533,4
31,8577,968,3
20"20,027,50
1,695,6920,0022,0023,00201,2525,00186

508698,5
42,9144,5508,0558,8584,2
31,8635,084,5
24"24,032,00
1,886,0024,0026,1227,25201,3829,50253

609,6812,8
47,8152,4609,6663,4692,2
35,1749,3115


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 300 Weld Neck Flange

Pipe
Flange


Hub
Raised FaceDrilling Template

Approx. Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,843,750,620,562,060,841,501,3840,622,621,7

21,395,215,714,252,321,338,135,0
15,766,50,75
3/4"1,054,620,820,622,251,051,881,6940,753,252,8

26,7117,320,815,757,126,747,742,9
19,082,51,26
1"13154,881,050,692,441,322,122,0040,753,503,5

33,4123,926,717,562,033,553,850,8
19,088,91,52
1 1/4"1,662,251,380,752,561,662,502,5040,883,884,5

42,2133,335,119,065,042,263,563,5
22,398,52,03
1 1/2"1,906,121,610,812,691,902,752,8840,754,506,4

48,3155,440,920,668,348,369,873,2
19,0114,32,89
2"23756,502,070,882,752,383,313,6280,885,007,5

60,3165,152,622,369,860,584,091,9
22,3127,03,40
2 1/2"28757,502,471,003,002,883,944,1280,885,8811,4

73,0190,562,725,476,273,2100,0104,6
22,3149,35,17
3"3,508,253,071,123,123,504,625,0080,886,6215,3

88,9209,578,028,479,288,9117,3127,0
22,3168,16,93
3 1/2"4,009,003,551,193,194,005,255,5080,887,2519,1

101,6228,690,230,281,0101,6133,3139,7
22,3184,18,67
4"4,5010,004,031,253,384,505,756,1980,887,8824,7

114,3254,0102,431,785,8114,3146,0157,2
22,3200,111,2
5"556311,005,051,383,885,567,007,3180,889,2533,3

141,3279,4128,335,098,5141,2177,8185,7
22,3234,915,1
6"662512,506,071,444,386,638,128,50120,8810,6242,4

168,3317,5154,236,5111,2168,4206,2215,9
22,3269,719,1
8"862515,007,981,624,628,6310,2510,62121,0013,0065,9

219,1381,0202,741,1117,3219,2260,3269,7
25,4330,229,9
10"10,7517,5010,021,885,1210,7512,6212,75161,1215,2594,1

273444,5254,547,7130,0273,1320,5323,9
28,4387,342,7
12"12,7520,5012,002,005,6212,7514,7515,00161,2517,75136

323,8520,7304,850,8142,7323,8374,6381,0
31,7450,861,8
14"14,023,00
2,125,7514,0016,7516,25201,2520,25189

355,6584,2
53,8142,7355,6425,4412,8
31,7514,385,8
16"16,025,50
2,255,7516,0019,0018,50201,3822,50234

406,4647,7
57,1146,0406,4482,6469,9
35,0571,5106
18"18,028,00
2,386,2518,0021,0021,00241,3824,75289

457,2711,2
60,4158,7457,2533,4533,4
35,0571,5131
20"20,030,50
2,506,3820,0023,1223,00241,3824,75348

508774,7
63,5162,0508,0587,2584,2
35,0628,6158
24"24,036,00
2,756,6224,0027,6227,25241,6232,00507

609,6914,4
69,8168,1609,6701,5692,2
41,1812,8230


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 600 Weld Neck Flange

Pipe
Flange


Hub
Raised FaceDrilling Template

Approx. Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,843,75
0,562,060,841,501,3840,622,621,9

21,395,2
14,252,321,338,135,1
15,766,50,87
3/4"1,054,62
0,622,251,051,881,6940,753,253,2

26,7117,3
15,757,226,747,742,9
19,182,61,45
1"13154,88
0,692,441,322,122,0040,753,503,9

33,4123,9
17,562,033,553,850,8
19,188,91,76
1 1/4"1,665,25
0,812,621,662,502,5040,753,885,5

42,2133,3
15,766,542,263,563,5
19,198,62,49
1 1/2"1,906,12
0,882,751,902,752,8840,884,507,7

48,3155,4
22,469,948,369,873,2
22,4114,33,49
2"23756,50
1,002,882,383,313,6280,755,009,6

60,3165,1
25,473,260,584,091,9
19,1127,04,36
2 1/2"28757,50
1,123,122,883,944,1280,885,8814,2

73,0190,5
28,479,273,2100,0104,6
22,4149,46,43
3"3,508,25
1,253,253,504,625,0080,886,6218,8

88,9209,5
31,882,688,9117,3127,0
22,4168,18,53
3 1/2"4,009,00
1,383,384,005,255,5081,007,2523,6

101,6228,6
35,185,9101,6133,4139,7
25,4184,210,7
4"4,5010,00
1,504,004,506,006,1981,008,5038,3

114,3273,1
38,1101,6114,3152,4157,2
25,4215,917,4
5"556313,00
1,754,505,567,447,3181,1210,5064,3

141,3330,2
44,5114,3141,2189,0185,7
28,4266,729,2
6"662514,00
1,884,626,638,758,50121,1211,5076,9

168,3355,6
47,8117,3168,4222,3215,9
28,4292,134,9
8"862516,50
2,195,258,6310,7510,62121,2513,75119

219,1419,1
55,6133,4219,2273,1269,7
31,8349,353,9
10"10,7520,00
2,506,0010,7513,5012,75161,3817,00191

273508,0
63,5152,4273,1342,9323,9
35,1431,886,5
12"12,7522,00
2,626,1212,7515,7515,00201,3819,25227

323,8558,8
66,5155,4323,8400,1381,0
35,1489,0103
14"14,023,75
2,756,5014,0017,0016,25201,5020,75269

355,6603,3
69,9165,1355,6431,8412,8
38,1527,1122
16"16,027,00
3,007,0016,0019,5018,50201,6223,75374

406,4685,8
76,2177,8406,4495,3469,9
41,1603,3170
18"18,029,25
3,257,2518,0021,5021,00201,7525,75449

457,2743,0
82,6184,2457,2546,1533,4
44,5654,1204
20"20,032,00
3,507,5020,0024,0023,00241,7528,50560

508812,8
88,9190,5508,0609,6584,2
44,5723,9254
24"24,037,00
4,008,0024,0028,2527,25242,0033,00789

609,6939,8
101,6203,2609,6717,6692,2
50,8838,2358


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 900 Weld Neck Flange

Pipe
Flange


Hub
RaisedDrilling Template

Approx.








 Face


Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,844,75specified by purchasers.0,882,380,841,501,3840,883,254,1

21,3120,6
22,360,421,338,135,0
22,382,51,87
3/4"1,055,12
1,002,751,051,751,6940,883,505,6

26,7130,0
25,469,826,744,542,9
22,388,92,56
1"1,325,88
1,122,881,322,062,0041,004,008,2

33,4149,3
28,473,133,452,350,8
25,4101,63,74
1 1/4"1,666,25
1,122,881,662,502,5041,004,389,5

42,2158,7
28,473,142,263,563,5
25,4111,24,33
1 1/2"1,907,00
1,253,251,902,752,8841,124,8813,1

48,3177,8
31,782,548,369,873,1
28,4123,95,94
2"2,388,50
1,504,002,384,123,6281,006,5023,8

60,3215,9
38,1101,660,3104,691,9
25,4165,110,8
2 1/2"2,889,62
1,624,122,884,884,1281,127,5033,0

73,0244,3
41,1104,673,0123,9104,6
28,4190,515,0
3"3,509,50
1,504,003,505,005,0081,007,5030,2

88,9241,3
38,1101,688,9127,0127,0
25,4190,513,7
4"4,5011,50
1,754,504,506,256,1981,259,2549,6

114,3292,1
44,4114,3114,3158,7157,2
31,7234,922,5
5"556313,75
2,005,005,567,507,3181,3811,0082,4

141,3349,2
50,8127,0141,2190,5185,6
35,0279,437,4
6"662515,00
2,195,506,639,258,50121,2512,50105

168,3381,0
55,6139,7168,4234,9215,9
31,7317,547,7
8"862518,50
2,506,388,6311,7510,62121,5015,50179

219,1469,9
63,5162,0219,2298,4269,7
38,1393,781,3
10"10,7521,50
2,757,2510,7514,5012,75161,5018,50262

273546,1
69,8184,1273368,3323,8
38,1469,9119
12"12,7524,00
3,127,8812,7516,5015,00201,5021,00346

323,8609,6
79,2200,1323,8419,1381,0
38,1533,4157
14"14,025,25
3,388,3814,0017,7516,25201,6222,00379

355,6641,3
85,8212,8355,6450,8412,7
41,1558,8180
16"16,027,75
3,508,5016,0020,0018,50201,7524,25478

406,4704,8
88,9215,9406,4508,0469,9
44,4615,9217
18"18,031,00
4,009,0018,0022,2521,00202,0027,00643

457,2787,4
101,6228,6457,2565,1533,4
50,8685,8292
20"20,033,75
4,259,7520,0024,5023,00202,1229,50797

508857,2
107,9247,6508622,3584,2
53,8749,3362
24"24,041,00
5,5011,5024,0029,5027,25202,6235,501465

609,61041,4
139,7292,1609,6749,3692,1
66,5901,7665



Dimensions and Weight Chart for ASME/ANSI B16.5 Class 1500 Weld Neck Flange

Pipe
Flange


Hub
RaisedDrilling Template

Approx.








 Face


Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,844,75specified by purchasers.0,882,380,841,501,3840,883,254,1

21,3120,6
22,360,421,338,135,0
22,382,51,87
3/4"1,055,12
1,002,751,051,751,6940,883,505,6

26,7130,0
25,469,826,744,542,9
22,388,92,56
1"1,325,88
1,122,881,322,062,0041,004,008,2

33,4149,3
28,473,133,452,350,8
25,4101,63,74
1 1/4"1,666,25
1,122,881,662,502,5041,004,389,5

42,2158,7
28,473,142,263,563,5
25,4111,24,33
1 1/2"1,907,00
1,253,251,902,752,8841,124,8813,1

48,3177,8
31,782,548,369,873,1
28,4123,95,94
2"2,388,50
1,504,002,384,123,6281,006,5023,8

60,3215,9
38,1101,660,3104,691,9
25,4165,110,8
2 1/2"2,889,62
1,624,122,884,884,1281,127,5033,0

73,0244,3
41,1104,673,0123,9104,6
28,4190,515,0
3"3,5010,50
1,884,623,505,255,0081,258,0043,8

88,9266,7
47,7117,388,9133,3127,0
31,7203,219,9
4"4,5012,25
2,124,884,506,386,1981,389,5065,9

114311,1
53,8123,9114,3162,0157,2
35,0241,329,9
5"556314,75
2,886,125,567,757,3181,6211,50122

141,3374,6
73,1155,4141,2196,8185,6
41,1292,155,4
6"662515,50
3,256,75 6,639,008,50121,5012,50151

168,3393,7
82,5171,4168,4228,6215,9
38,1317,568,4
8"862519,00
3,628,388,6311,5010,62121,7515,50258

219,1482,6
91,9212,8219,2292,1269,7
44,4393,7117
10"10,7523,00
4,2510,0010,7514,5012,75122,0019,00427

273584,2
107,9254,0273368,3323,8
50,8482,6194
12"12,7526,50
4,8811,1212,7517,7515,001621,222,50634

323,8673,1
123,9282,4323,8450,8381,0
53,8571,5288
14"14,029,50
5,2511,7514,0019,5016,25162,3825,00837

355,6749,3
133,3298,4355,6495,3412,7
60,4635,0380
16"16,032,50
5,7512,2516,0021,7518,50162,6227,751068

406,4825,5
146,0311,1406,4552,4469,9
66,5704,8485
18"18,036,00
6,3812,8818,0023,5021,00162,8830,501419

457,2914,4
162,0327,1457,2596,9533,4
73,1774,7644
20"20,038,75
7,0014,0020,0025,2523,00163,1232,751707

508984,2
177,8355,6508641,3584,2
79,2831,8775
24"24,046,00
8,0016,0024,0030,0027,25163,6239,002714

609,61168,4
203,2406,4609,6762,0692,1
91,9990,61232


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 2500 Weld Neck Flange

Pipe
Flange


Hub
RaisedDrilling Template

Approx.








 Face


Weight
Norm.O DDJbhamgNumberlk≈
sizein.in.in.in.in.in.in.in.
in.in.Pounds

mmmmmmmmmmmmmmmm
mmmmKgs
1/2"0,845,25
1,192,880,841,691,3840,883,506,9

21,3133,4
30,273,221,342,935,1
22,488,53,12
3/4"1,055,50
1,253,121,052,001,6940,883,758,1

26,7139,7
31,879,226,750,842,9
22,495,33,70
1"13156,25
1,383,501,322,252,0041,004,2511,5

33,4158,8
35,188,933,557,250,8
25,4108,05,24
1 1/4"1,667,25
1,503,751,662,882,5041,125,1217,0

42,2184.2
38,195,342,273,263,5
28,4130,07,74
1 1/2"1,908,00
1,754,381,903,122,8841,255,7524,0

48,3203,2
44,5111,348,379,273,2
31,8146,110,9
2"23759,25
2,005,002,383,753,6281,126,7535,7

60,3235,0
50,8127,060,595,391,9
28,4171,516,2
2 1/2"287510,50
2,255,622,884,504,1281,257,7552,2

73,0266,7
57,2142,773,2114,3104,6
31,7196,923,7
3"3,5012,00
2,626,623,505,255,0081,389,0079,7

88,9304,8
66,5168,188,9133,4127,0
35,0228,636,2
4"4,5014,00
3,007,504,506,506,1981,6210,75122

114,3355,6
76,2190,5114,3165,1157,2
41,1273,155,3
5"556316,50
3,629,005,568,007,3181,8812,75204

141,3419,1
91,9228,6141,2203,2185,7
47,8323,992,5
6"662519,00
4,2510,756,639,258,5082,1214,50315

168,3482,6
108,0273,1168,4235,0215,9
53,8368,3143
8"862521,75
5,0012,508,6312,0010,62122,1217,25474

219,1552,5
127,0317,5219,2304,8269,7
53,8438,2215
10"10,7526,50
6,5016,5010,7514,7512,75122,6221,25894

273673,1
165,1419,1273,1374,7323,9
66,5539,8406
12"12,7530,00
7,2518,2512,7517,3815,00122,8824,381260

323,8762,0
184,2463,6323,9441,5381,0
73,2619,3572


Product Details

1. Size: 1/2"-60"(DN10-DN1500) 

2. Types: Slip-On flange, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange, Plate flange, Long Welding Neck and  flat flange etc;

3. Material: 

Carbon steel: ASTM A105/SA105N; ASTM A350 LF1; LF2; CL1/CL2, CT20;16MN;RST37.2;S235JR;P245GH;P250GH;P250GHM; C22.8;Q235;15CrMo

Stainless steel: ASTM A182, SS303; SS304/304L; SS316/316L; F321; F347; 316Ti; A182F317/317L; SS400;SF440

Alloy Steel:ASTM A182 A182 F12,F11,F22,F5,F9,F91,F51,F53,F55,F60,F44,F304H,F316H,F317H,F321H,F347H,INCONEL 600,625,825,etc.

4. Wall Thickness: Sch5, Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS, Sch160;

5. Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue, Groove, Small-Tongue, Groove, etc

6. Pressure Rating: 

ANSI B16.5: Class 150 Flanges-Class 2500 Flanges；

DIN: 6Bar 10Bar 16Bar 25Bar 40Bar 63Bar

JIS: 5K Flanges-30K Flanges

EN1092-1: 6Bar 10Bar 16Bar 25Bar 40Bar 63Bar 100Bar

7. Surface treatment: Anti-rust oil, black / yellow / transparent / electric galvanized / hot galvanized.

8. Sealing Surface: FF, RF, MFM, TG, FF

9.  Heat Treatment: Normalizing, Annealing, Quenching Tempering.

10. Standard:

(1) ANSI B16.5, A105 150LB / 300LB / 600LB / 900LB / 1500LB / 2500LB

(2) DIN 2573 PN6 / DIN 2576 PN10 / DIN2502 PN16 / DIN2503 P25-40 / DIN2566 PN16 / DIN2631-2635 RST37.2 OR C22.8

(3) JIS SS400 OR SF440 5K / 10K / 16K / 20K / 30K

(4) UNI 2276 / 2277 / 2278 / 6084 / 6089 / 6090 / 2544 / 2282 / 6091-6093

(5) EN1092 PN6 / PN10 / PN16 / PN25 / PN40 / TYPE1 TYPE2 TYPE 5 TYPE 12 TYPE 13

(6) BS4504 SANI1123 1000/3, 1600/3, 2500/3, T/D, T/E, T/F carbon steel flange

(7) AS2129 TABLE D / TABLE H / TABLE E carbon steel flange

(8) GOST 12820-80 / 12821-80 carbon steel flange

11. Tolerance: according to the standard.

12. Certification: ISO9001:2000 , API, CE  

13. Package: Plywood pallet or case.

14. Delivery time: At the earliest ,within the period required by customer. 

15. Payment term: T/T or L/C

16. Sample: available

 

 


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