Type: Welding Neck (Weld Neck, Type 11)
Pressure: PN 100 (100 bar / 1,450 psi)
Size Range: DN 10 – DN 400
Face Type: Raised Face (RF) / Ring Type Joint (RTJ)
Neck: Long taper, bored to match pipe schedule
Equivalent: EN 1092-1 Type 11 PN 100 / ASME B16.5 Class 600–900
EN 1092-1 Type 11 — PN 100 Dimension Reference Table
| DN |
Pipe OD (mm) |
Flange OD D (mm) |
Thickness b (mm) |
Bolt Circle k (mm) |
Bolt Holes |
Hole d (mm) |
Neck OD n (mm) |
Approx. Weight (kg) |
| 10 |
17.2 |
100 |
20 |
70 |
4 |
14 |
32 |
1.20 |
| 15 |
21.3 |
105 |
20 |
75 |
4 |
14 |
38 |
1.45 |
| 20 |
26.9 |
130 |
22 |
90 |
4 |
18 |
44 |
2.30 |
| 25 |
33.7 |
140 |
24 |
100 |
4 |
18 |
50 |
3.00 |
| 32 |
42.4 |
155 |
24 |
110 |
4 |
22 |
60 |
3.80 |
| 40 |
48.3 |
170 |
26 |
125 |
4 |
22 |
68 |
4.80 |
| 50 |
60.3 |
180 |
26 |
135 |
4 |
22 |
80 |
5.60 |
| 65 |
76.1 |
205 |
28 |
160 |
8 |
22 |
100 |
8.20 |
| 80 |
88.9 |
215 |
30 |
170 |
8 |
22 |
115 |
9.80 |
| 100 |
114.3 |
250 |
32 |
200 |
8 |
26 |
145 |
14.50 |
| 125 |
139.7 |
295 |
36 |
240 |
8 |
30 |
175 |
23.00 |
| 150 |
168.3 |
325 |
38 |
270 |
8 |
30 |
205 |
30.50 |
| 200 |
219.1 |
390 |
42 |
330 |
12 |
33 |
260 |
48.00 |
| 250 |
273 |
470 |
48 |
400 |
12 |
36 |
325 |
82.00 |
| 300 |
323.9 |
540 |
52 |
460 |
16 |
36 |
380 |
118.0 |
| 350 |
355.6 |
595 |
56 |
515 |
16 |
39 |
415 |
155.0 |
| 400 |
406.4 |
670 |
60 |
580 |
16 |
42 |
470 |
215.0 |
Table 1: EN 1092-1 Type 11 (Weld Neck) PN 100 reference dimensions. Dimensions for DN 10–DN 400. DN 450–DN 600 available on request. Bolt sizes increase from M14 to M42 with size.
⚠ High-Pressure Service Requirements
PN 100 flanges require careful material selection for elevated temperatures. Pressure-temperature derating per EN 1092-1 must be applied above 120°C. For sour gas (NACE) or high-H₂S service, specify A350 LF3 or A182 F51 (Duplex) materials. HT PIPE engineering can advise on material compatibility.
PN 100 Pressure-Temperature Ratings (EN 1092-1)
| PN |
20°C |
100°C |
200°C |
250°C |
300°C |
350°C |
400°C |
450°C |
| PN 100 |
100 |
92 |
82 |
75 |
70 |
61 |
55 |
45 |
| PN 160 |
160 |
147 |
131 |
120 |
112 |
98 |
88 |
72 |
Table 2: EN 1092-1 allowable pressure (bar) at temperature for PN 100 and PN 160. Based on P245GH / 13CrMo4-5 group 1 materials.
Materials
Carbon Steel: ASTM A105, A350 LF2/LF3
Alloy Steel: A182 F5, F9, F11, F22, F91
Stainless Steel: A182 F304, F316, F321, F347
Duplex / Super Duplex: S31803, S32750, S32760
Inconel: 600, 625, 718
Applications
High-pressure oil and gas transmission lines
Refinery and petrochemical process units
Steam turbine connections in power plants
Chemical processing under high pressure
Cryogenic LNG terminals
Boiler feedwater and condensate systems
Flange Material Selection Guide
| Material |
Grade |
Max Temp |
Key Application |
| Carbon Steel |
A350 LF2 |
425°C |
High-pressure oil & gas |
| Alloy Steel F22 |
A182 F22 (2¼CrMo) |
550°C |
Power plant, refineries |
| Alloy Steel F91 |
A182 F91 (9CrMo) |
600°C |
Ultra-high temp power |
| Stainless Steel 316 |
A182 F316 |
400°C |
Chemical, pharma |
| Duplex 2205 |
A182 F51 / S31803 |
300°C |
Offshore, seawater |
| Super Duplex 2507 |
A182 F53 / S32750 |
300°C |
Harsh chemical, subsea |
| Inconel 625 |
UNS N06625 |
700°C |
Aerospace, marine |
Table 3: Material selection guide for DIN 2545 / EN 1092-1 Type 11 PN 100 weld neck flanges. Always verify with applicable pressure equipment code (ASME, EN, etc.).
PN 100 vs ANSI/ASME Pressure Class
| PN Class |
Max Pressure (bar) |
ANSI/ASME Equivalent |
| PN 64 |
64 bar |
Class 600 |
| PN 100 |
100 bar |
Class 600–900 |
| PN 160 |
160 bar |
Class 900–1500 |
| PN 250 |
250 bar |
Class 1500–2500 |
Table 4: PN 100 vs ANSI/ASME pressure class equivalent. PN 100 corresponds approximately to Class 600–900 depending on DN size.
