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Stainless welding neck flanges according to EN

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Stainless steel welding neck flanges PN 10, 16 and 40 according to EN 1092-1 latest edition, type 11B1 (3.2-6 Ra max.) annealed, fully machined. Base material according to EN 10222-5/ASTM/ASME A/SA 182.

Our EN welding neck flanges are corrosion tested according to EN ISO 3651-2 latest edition and PMI checked. The stainless welding neck flanges are certified according to EN 10204/3.1.

Welding neck flanges PN 10

EN 1092-1, type 11 (replaces DIN 2632)

Material EN 1.4404 (ASTM 316L)

Product code example:

FFWN-316L-273-PN10

● = stock standard
Pipe d1 D b k h1 d3 s r h2 d4 f Drilling template Weight ASTM
DN mm mm mm mm mm mm mm mm mm mm mm Holes Thread d2 kg/pce 316L
200
250
300
219.1
273.0
323.9
340
395
445
24
26
26
295
350
400
62
68
68
235
292
344
5.9
6.3
7.1
10
12
12
16
16
16
268
320
370
3
3
4
8
12
12
M 20
M 20
M 20
22
22
22
11.6
15.8
18.3
●
●
●
400
500
406.4
508.0
565
670
26
28
515
620
72
75
440
542
7.1
7.1
12
12
16
16
482
585
4
4
16
20
M 24
M 24
26
26
30.6
40.5
●
●

Welding neck flanges PN 16

EN 1092-1, type 11 (replaces DIN 2633)

Material EN 1.4306/1.4307 (ASTM 304L) and EN 1.4404 (ASTM 316L)

Product code example:

FFWN-316L-60.3-PN16

● = stock standard

Pipe d1 D b k h1 d3 s r h2 d4 f Drilling template Weight ASTM ASTM
DN mm mm mm mm mm mm mm mm mm mm mm Holes Thread d2 kg/pce 304L 316L
50
-
57.0
60.3
165
-
18
-
125
-
45
-
72
75
2.9
-
6
-
8
-
102
-
3
-
4
-
M 16
-
18
-
2.53
-
●
-
●
●
65
76.1
185
18
145
45
90
2.9
6
10
122
3
4
M 16
18
3.03
●
●
80
88.9
200
20
160
50
105
3.2
6
10
138
3
8
M 16
18
3.92
●
●
100
-
108.0
114.3
220
-
20
-
180
-
52
-
125
131
3.6
-
8
-
12
-
158
-
3
-
8
-
M 16
-
18
-
4.62
-
●
-
●
●
125
139.7
250
22
210
55
156
4.0
8
12
188
3
8
M 16
18
6.30
●
●
150
-
159.0
168.3
285
-
22
-
240
-
55
-
175
184
4.5
-
10
-
12
-
212
-
3
-
8
-
M 20
-
22
-
7.81
-
●
-
●
●
200
219.1
340
24
295
62
235
5.9
10
16
268
3
12
M 20
22
11.5
●
●
250
273.0
405
26
355
70
292
6.3
12
16
320
3
12
M 24
26
16.7
●
●
300
323.9
460
28
410
78
344
7.1
12
16
378
4
12
M 24
26
22.1
●
●

Welding neck flanges PN 40

EN 1092-1, type 11 (replaces DIN 2635)

Material EN 1.4306/1.4307 (ASTM 304L) and 1.4404 (ASTM 316L)

Product code example:

FFWN-316L-21.3-PN40

● = stock standard

Pipe d1 D b k h1 d3 s r h2 d4 f Drilling template Weight ASTM ASTM
DN mm mm mm mm mm mm mm mm mm mm mm Holes Thread d2 kg/pce 304L 316L
10
17.2
90
16
60
35
28
1.8
4
6
40
2
4
M 12
14
0.678
●
15
-
20.0
21.3
95
-
16
-
65
-
38
-
30
32
2.0
-
4
-
6
-
45
-
2
-
4
-
M 12
-
14
-
0.768
-
●
-
●
●
20
-
25.0
26.9
105
-
18
-
75
-
40
-
38
40
2.3
-
4
-
6
-
58
-
2
-
4
-
M 12
-
14
-
1.09
-
●
-
●
●
25
-
30.0
33.7
115
-
18
-
85
-
40
-
42
46
2.6
-
4
-
6
-
68
-
2
-
4
-
M 12
-
14
-
1.30
-
●
-
●
●
32
-
38.0
42.4
140
-
18
-
100
-
42
-
52
56
2.6
-
6
-
6
-
78
-
2
-
4
-
M 16
-
18
-
1.91
-
●
-
●
●
40
-
44.5
48.3
150
-
18
-
110
-
45
-
60
64
2.6
-
6
-
7
-
88
-
3
-
4
-
M 16
-
18
-
2.15
-
●
-
●
●
50
-
57.0
60.3
165
-
20
-
125
-
48
-
72
75
2.9
-
6
-
8
-
102
-
3
-
4
-
M 16
-
18
-
2.85
-
●
-
●
●
65
76.1
185
22
145
52
90
2.9
6
10
122
3
8
M 16
18
3.68
●
●
80
88.9
200
24
160
58
105
3.2
8
12
138
3
8
M 16
18
4.78
●
●
100
114.3
235
24
190
65
134
3.6
8
12
162
3
8
M 20
22
6.46
●
●
125
-
133.0
139.7
270
-
26
-
220
-
68
-
155
162
4.0
-
8
-
12
-
188
-
3
-
8
-
M 24
-
26
-
8.86
-
●
-
●
●
150
200
168.3
219.1
300
375
28
34
250
320
75
88
192
244
4.5
6.3
10
10
12
16
218
285
3
3
8
12
M 24
M 27
26
30
11.7
21.0
●
●
●
●

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