ASME B16.47 Series B · ASTM A105 · stock and made to order
36″ Class 600 Weld Neck Flange — ASME B16.47 Series B
36″ Class 600 weld neck flange to ASME B16.47 Series B, machined from ASTM A105. Outside diameter 1213 mm, thickness 146.1 mm, 28 bolt holes on a 1104.9 mm circle, approximate weight 608 kg. Available with raised face, flat face or the facing specified on your drawing.
Size
36″ / DN900
Standard
ASME B16.47 Series B (ASME B16.47-2025, Series B)
Pressure rating
Class 600
Outside diameter
1213 mm (47.76″)
Thickness
146.1 mm (5.75″)
Bolt circle
1104.9 mm (43.5″)
Approx. weight
608 kg
Full dimensions — 36″ Class 600
| Size | DN | OD | Thickness | RF Ø | Bolt circle | Bolts | Hub Ø | Length | Weight | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26″ | 650 | 889 mm (35″) | 111.3 mm (4.38″) | 727 mm (28.62″) | 806.4 mm (31.75″) | 28 × Ø44.5 mm (1.75″) | 698 mm (27.48″) | 181 mm (7.13″) | 249 kg | Details → |
| 28″ | 700 | 952 mm (37.48″) | 115.9 mm (4.56″) | 784 mm (30.87″) | 863.6 mm (34″) | 28 × Ø47.6 mm (1.87″) | 752 mm (29.61″) | 190 mm (7.48″) | 295 kg | Details → |
| 30″ | 750 | 1022 mm (40.24″) | 125.4 mm (4.94″) | 841 mm (33.11″) | 927.1 mm (36.5″) | 28 × Ø50.8 mm (2″) | 806 mm (31.73″) | 205 mm (8.07″) | 367 kg | Details → |
| 32″ | 800 | 1086 mm (42.76″) | 130 mm (5.12″) | 895 mm (35.24″) | 984.2 mm (38.75″) | 28 × Ø54 mm (2.13″) | 861 mm (33.9″) | 216 mm (8.5″) | 431 kg | Details → |
| 34″ | 850 | 1162 mm (45.75″) | 141.3 mm (5.56″) | 952 mm (37.48″) | 1054.1 mm (41.5″) | 24 × Ø60.3 mm (2.37″) | 914 mm (35.98″) | 233 mm (9.17″) | 547 kg | Details → |
| 36″ (this size) | 900 | 1213 mm (47.76″) | 146.1 mm (5.75″) | 1010 mm (39.76″) | 1104.9 mm (43.5″) | 28 × Ø60.3 mm (2.37″) | 968 mm (38.11″) | 243 mm (9.57″) | 608 kg | Details → |
| 38″ | 950 | 1270 mm (50″) | 152.4 mm (6″) | 1054 mm (41.5″) | 1162 mm (45.75″) | 28 × Ø60.3 mm (2.37″) | 1022 mm (40.24″) | 254 mm (10″) | — | Details → |
| 40″ | 1000 | 1321 mm (52.01″) | 158.8 mm (6.25″) | 1111 mm (43.74″) | 1212.8 mm (47.75″) | 32 × Ø60.3 mm (2.37″) | 1073 mm (42.24″) | 264 mm (10.39″) | — | Details → |
| 42″ | 1050 | 1403 mm (55.24″) | 168.1 mm (6.62″) | 1168 mm (45.98″) | 1282.7 mm (50.5″) | 28 × Ø66.7 mm (2.63″) | 1127 mm (44.37″) | 279 mm (10.98″) | — | Details → |
| 44″ | 1100 | 1454 mm (57.24″) | 173 mm (6.81″) | 1226 mm (48.27″) | 1333.5 mm (52.5″) | 32 × Ø66.7 mm (2.63″) | 1181 mm (46.5″) | 289 mm (11.38″) | — | Details → |
| 46″ | 1150 | 1511 mm (59.49″) | 179.4 mm (7.06″) | 1276 mm (50.24″) | 1390.6 mm (54.75″) | 32 × Ø66.7 mm (2.63″) | 1235 mm (48.62″) | 300 mm (11.81″) | — | Details → |
| 48″ | 1200 | 1594 mm (62.76″) | 188.9 mm (7.44″) | 1334 mm (52.52″) | 1460.5 mm (57.5″) | 32 × Ø73 mm (2.87″) | 1289 mm (50.75″) | 316 mm (12.44″) | — | Details → |
| 50″ | 1250 | 1670 mm (65.75″) | 196.9 mm (7.75″) | 1384 mm (54.49″) | 1524 mm (60″) | 28 × Ø79.4 mm (3.13″) | 1343 mm (52.87″) | 329 mm (12.95″) | — | Details → |
| 52″ | 1300 | 1721 mm (67.76″) | 203.2 mm (8″) | 1435 mm (56.5″) | 1574.8 mm (62″) | 32 × Ø79.4 mm (3.13″) | 1394 mm (54.88″) | 337 mm (13.27″) | — | Details → |
| 54″ | 1350 | 1778 mm (70″) | 209.6 mm (8.25″) | 1492 mm (58.74″) | 1632 mm (64.25″) | 32 × Ø79.4 mm (3.13″) | 1448 mm (57.01″) | 349 mm (13.74″) | — | Details → |
| 56″ | 1400 | 1854 mm (72.99″) | 217.5 mm (8.56″) | 1543 mm (60.75″) | 1695.4 mm (66.75″) | 32 × Ø85.7 mm (3.37″) | 1502 mm (59.13″) | 362 mm (14.25″) | — | Details → |
| 58″ | 1450 | 1905 mm (75″) | 222.3 mm (8.75″) | 1600 mm (62.99″) | 1746.2 mm (68.75″) | 32 × Ø85.7 mm (3.37″) | 1553 mm (61.14″) | 370 mm (14.57″) | — | Details → |
| 60″ | 1500 | 1994 mm (78.5″) | 233.4 mm (9.19″) | 1657 mm (65.24″) | 1822.4 mm (71.75″) | 28 × Ø92.1 mm (3.63″) | 1610 mm (63.39″) | 389 mm (15.31″) | — | Details → |
Published ASME B16.47 Series B dimensions for every Class 600 size in this product family.
Dimensions in millimetres; the inch equivalent is shown in brackets. Bolt hole diameter applies to through-holes. For stud length, gasket and bolting selection, match the gasket and bolts to B16.47 B.
What Class 600 means in service
Series B follows the former API 605 dimensions, with a smaller outside diameter and a different bolt pattern from Series A. Ratings are ASME classes 150, 300, 400, 600 and 900, with allowable pressure from the B16.47 tables.
Series B follows the former API 605 dimensions, with a smaller outside diameter and a different bolt pattern from Series A. Ratings are ASME classes 150, 300, 400, 600 and 900, with allowable pressure from the B16.47 tables.
Facing and materials
Raised face (RF) is standard: 1.5 mm high for Classes 75, 150 and 300; 6.4 mm for Classes 400, 600 and 900. FF and RTJ faces are available to drawing.
- ASTM A105 / A105N
- ASTM A350 LF2
- ASTM A182 F304/F316L
- ASTM A694 F52/F60/F65
- ASTM A182 F51/F53
Other grades, impact-tested heats and NACE MR0175 requirements are quoted on request. Material certificates to EN 10204 3.1 are issued against the same heat number as the dimensional report.
Inspection and delivery
- Dimensional inspection against the B16.47 B table for 36″ Class 600
- Heat number stamped on the rim; EN 10204 3.1 certificate issued
- PMI on stainless and alloy heats; UT/RT on request
- Anti-rust oil, plywood case or pallet, with packing list and MTC
- Typical lead time 7–15 days for carbon steel stock sizes, 20–30 days for alloys
Other sizes in Class 600
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36″ Class 600 Weld Neck Flange
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