ASME B16.47 Series A · ASTM A105 · stock and made to order
26″ Class 600 Blind Flange — ASME B16.47 Series A
26″ Class 600 blind flange to ASME B16.47 Series A, machined from ASTM A105. Outside diameter 1016 mm, thickness 125.4 mm, 28 bolt holes on a 914.4 mm circle, approximate weight 798 kg. Available with raised face, flat face or the facing specified on your drawing.
Size
26″ / DN650
Standard
ASME B16.47 Series A (ASME B16.47-2025, Series A)
Pressure rating
Class 600
Outside diameter
1016 mm (40″)
Thickness
125.4 mm (4.94″)
Bolt circle
914.4 mm (36″)
Approx. weight
798 kg
Full dimensions — 26″ Class 600
| Size | DN | OD | Thickness | RF Ø | Bolt circle | Bolts | Weight | |
|---|---|---|---|---|---|---|---|---|
| 26″ (this size) | 650 | 1016 mm (40″) | 125.4 mm (4.94″) | 749 mm (29.49″) | 914.4 mm (36″) | 28 × Ø50.8 mm (2″) | 798 kg | Details → |
| 28″ | 700 | 1073 mm (42.24″) | 131.8 mm (5.19″) | 800 mm (31.5″) | 965.2 mm (38″) | 28 × Ø54 mm (2.13″) | 935 kg | Details → |
| 30″ | 750 | 1130 mm (44.49″) | 139.7 mm (5.5″) | 857 mm (33.74″) | 1022.4 mm (40.25″) | 28 × Ø54 mm (2.13″) | 1099 kg | Details → |
| 32″ | 800 | 1194 mm (47.01″) | 147.6 mm (5.81″) | 914 mm (35.98″) | 1079.5 mm (42.5″) | 28 × Ø60.3 mm (2.37″) | 1296 kg | Details → |
| 34″ | 850 | 1245 mm (49.02″) | 154 mm (6.06″) | 965 mm (37.99″) | 1130.3 mm (44.5″) | 28 × Ø60.3 mm (2.37″) | 1468 kg | Details → |
| 36″ | 900 | 1314 mm (51.73″) | 162.1 mm (6.38″) | 1022 mm (40.24″) | 1193.8 mm (47″) | 28 × Ø66.7 mm (2.63″) | 1724 kg | Details → |
| 38″ | 950 | 1270 mm (50″) | 155.4 mm (6.12″) | 1054 mm (41.5″) | 1162 mm (45.75″) | 28 × Ø60.3 mm (2.37″) | 1544 kg | Details → |
| 40″ | 1000 | 1321 mm (52.01″) | 162.1 mm (6.38″) | 1111 mm (43.74″) | 1212.8 mm (47.75″) | 32 × Ø60.3 mm (2.37″) | 1741 kg | Details → |
| 42″ | 1050 | 1403 mm (55.24″) | 171.5 mm (6.75″) | 1168 mm (45.98″) | 1282.7 mm (50.5″) | 28 × Ø66.7 mm (2.63″) | 2080 kg | Details → |
| 44″ | 1100 | 1454 mm (57.24″) | 177.8 mm (7″) | 1226 mm (48.27″) | 1333.5 mm (52.5″) | 32 × Ø66.7 mm (2.63″) | 2316 kg | Details → |
| 46″ | 1150 | 1511 mm (59.49″) | 185.7 mm (7.31″) | 1276 mm (50.24″) | 1390.6 mm (54.75″) | 32 × Ø66.7 mm (2.63″) | 2612 kg | Details → |
| 48″ | 1200 | 1594 mm (62.76″) | 195.3 mm (7.69″) | 1334 mm (52.52″) | 1460.5 mm (57.5″) | 32 × Ø73 mm (2.87″) | 3056 kg | Details → |
| 50″ | 1250 | 1670 mm (65.75″) | 203.2 mm (8″) | 1384 mm (54.49″) | 1524 mm (60″) | 28 × Ø79.4 mm (3.13″) | 3490 kg | Details → |
| 52″ | 1300 | 1721 mm (67.76″) | 209.6 mm (8.25″) | 1435 mm (56.5″) | 1574.8 mm (62″) | 32 × Ø79.4 mm (3.13″) | 3822 kg | Details → |
| 54″ | 1350 | 1778 mm (70″) | 217.5 mm (8.56″) | 1492 mm (58.74″) | 1632 mm (64.25″) | 32 × Ø79.4 mm (3.13″) | 4233 kg | Details → |
| 56″ | 1400 | 1854 mm (72.99″) | 225.6 mm (8.88″) | 1543 mm (60.75″) | 1695.4 mm (66.75″) | 32 × Ø85.7 mm (3.37″) | 4776 kg | Details → |
| 58″ | 1450 | 1905 mm (75″) | 231.6 mm (9.12″) | 1600 mm (62.99″) | 1746.2 mm (68.75″) | 32 × Ø85.7 mm (3.37″) | 5177 kg | Details → |
| 60″ | 1500 | 1994 mm (78.5″) | 242.9 mm (9.56″) | 1657 mm (65.24″) | 1822.4 mm (71.75″) | 28 × Ø92.1 mm (3.63″) | 5946 kg | Details → |
Published ASME B16.47 Series A 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 A.
What Class 600 means in service
Series A follows the former MSS SP-44 dimensions. Ratings are ASME classes 150, 300, 400, 600 and 900, with allowable pressures read from the B16.47 pressure–temperature tables for the material group and design temperature.
Series A follows the former MSS SP-44 dimensions. Ratings are ASME classes 150, 300, 400, 600 and 900, with allowable pressures read from the B16.47 pressure–temperature tables for the material group and design temperature.
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. Flat face (FF) and ring-type joint (RTJ) faces are available against the 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 A table for 26″ 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
Request a quotation
26″ Class 600 Blind Flange
Tell us the quantity, face type, material and delivery port. We will confirm price, lead time and the applicable certificate within one business day.
Send an Inquiry
Send drawings, dimensions or a standard reference. Our sales engineers reply within 24 hours on business days.