Titanium weld neck flanges excel in systems used in chemical, offshore, aerospace, and high-purity media transport applications. Precision-forged from high-quality titanium, their high corrosion resistance ensures long-term structural integrity and sealing reliability in harsh environments, significantly reducing maintenance costs and extending equipment life.
Weld neck titanium flanges are pipe fittings with a round tube transition structure. They are welded to the pipe and are primarily used in high-pressure, high-temperature, or media-sensitive piping systems. The flared transition neck structure distances the weld from the sealing surface, reducing weld distortion and improving sealing performance. This design significantly enhances system sealing and long-term stability under high-pressure, high-temperature, or cyclic loading conditions, making them an ideal choice for demanding applications.
Titanium flanges with weld neck are available in all standard sizes to meet your needs. Furthermore, our robust customization capabilities allow us to produce flanges to meet your specific pressure ratings, connection standards, or special dimensions. Whether standard or custom, we are committed to providing high-quality titanium flange solutions that meet your precise needs, making us your reliable partner.
Nominal Dimension |
Outside diameter |
Connection size |
Flange thickness |
Flange neck big end |
Flange inner diameter |
Flange height |
|||||
DN |
NPS |
Steel pipe outer diameter |
Diameter of center circle of bolt hole |
Bolt hole |
Bolt |
Number of bolt holes |
|||||
15 |
1/2 |
21.3 |
90 |
60.3 |
16 |
M14 |
4 |
9.6 |
30 |
15.5 |
46 |
20 |
3/4 |
26.9 |
100 |
69.9 |
16 |
M14 |
4 |
11.2 |
38 |
21 |
51 |
25 |
1 |
33.7 |
110 |
79.4 |
16 |
M14 |
4 |
12.7 |
49 |
27 |
54 |
32 |
1-1/4 |
42.4 |
115 |
88.9 |
16 |
M14 |
4 |
14.3 |
59 |
35 |
56 |
40 |
1-1/2 |
48.3 |
125 |
98.4 |
16 |
M14 |
4 |
15.9 |
65 |
41 |
60 |
50 |
2 |
60.3 |
150 |
120.7 |
18 |
M16 |
4 |
17.5 |
78 |
52 |
62 |
65 |
2-1/2 |
76.1 |
180 |
139.7 |
18 |
M16 |
4 |
20.7 |
90 |
66 |
68 |
80 |
3 |
88.9 |
190 |
152.4 |
18 |
M16 |
4 |
22.3 |
108 |
77.5 |
68 |
100 |
4 |
114.3 |
230 |
190.5 |
18 |
M16 |
8 |
22.3 |
135 |
101.5 |
75 |
125 |
5 |
139.7 |
255 |
215.9 |
22 |
M20 |
8 |
22.3 |
164 |
127 |
87 |
150 |
6 |
168.3 |
280 |
241.3 |
22 |
M20 |
8 |
23.9 |
192 |
154 |
87 |
200 |
8 |
219.1 |
345 |
298.5 |
22 |
M20 |
8 |
27.0 |
246 |
203 |
100 |
250 |
10 |
273 |
405 |
362.0 |
26 |
M24 |
12 |
28.6 |
305 |
255 |
100 |
300 |
12 |
323.9 |
485 |
431.8 |
26 |
M24 |
12 |
30.2 |
365 |
303.5 |
113 |
350 |
14 |
355.6 |
535 |
476.3 |
30 |
M27 |
12 |
33.4 |
400 |
— |
125 |
400 |
16 |
406.4 |
595 |
539.8 |
30 |
M27 |
16 |
35.0 |
457 |
— |
125 |
450 |
18 |
457 |
635 |
577.9 |
33 |
M30 |
16 |
38.1 |
505 |
— |
138 |
500 |
20 |
508 |
700 |
635.0 |
33 |
M30 |
20 |
41.3 |
559 |
— |
143 |
600 |
24 |
610 |
815 |
749.3 |
36 |
M33 |
20 |
46.1 |
663 |
— |
151 |
Titanium weld neck flanges have extremely strong resistance to corrosive media such as seawater and chloride ions. Their corrosion resistance far exceeds that of stainless steel and carbon steel, and they are especially suitable for harsh environments such as marine and chemical industries.
No need. Titanium weld neck flanges can be used for a long time without coating or cathodic protection, avoiding the risk of rust and significantly reducing maintenance requirements.