ASME SB564 USN N10276 Alloy C-276 Anchor Flange Swivel Flange
Double Studded Adapter Flange
1. WELDING NECK ANCHOR FLANGES
Anchor flanges are important elements in many thrust-control
systems, especially those protecting pipeline pumping stations.
Welded into the line and encased in concrete, they immobilize the
pipe at predetermined locations and transfer built-up stresses to
external structures. For example, in cross-county pipelines end
forces of considerable magnitude are generated by internal pressure
and temperature changes. A 24" O.D. x 0.594" wall pipe in a
pipeline operating at 1100 psi and subjected to a 90° rise in metal
temperature, for example, will develop total thrust of 1,000,000
lbs. Unless these forces are properly controlled, they can damage
pumps, valves and other close-tolerance equipment. Anchor Flanges
may be used to secure subsea piping and risers to platform
structures.
Ordering information
REQUIRED FOR ALL CODES
1. Design Code
2. Material
3. Design Pressure
4. Design Temperature
5. Installation Temperature
6. Allowable Concrete Bearing Stress
7. Corrosion Allowance
8. Run Pipe Diameter
9. Run Pipe Schedule Thickness
10. Other applicable moment and load information
2. Swivel Ring Flange (SRF) is the most commonly used flange for
shallow water pipeline repairs. The SRF allows the diver to line up
bolt holes with the mating weld neck flange. This significantly
reduces the time needed to complete the repair operation.
Key Features
.Simple design facilitates bolt-hole alignment.
.Spring retainer eliminates welded retainer components.
.Removable retainer allows for cleaning and lubricating of the
hub-to-flange interface.
.Thicker flange ensures ability to handle higher-stress loads,
which some brands fail to meet.
.Fully compliant with ASME Section VIII.
Applications
.Pipeline repair operations – shallow water, diver assist
.Pipeline new construction for tie-in point – shallow water, diver
assist
Services
Engineering design
Testing – FAT, SIT design qualification
Coatings
Installation technical assistance
3. DSA - Double Studded Adapter flange is the part which is often
used in the wellhead system, DSA is designed and manufactured in
accordance with API 6A standard,DSA usually has double studded
flange connections. we have all sizes and pressure ratings DSA used
for oilfield applications.
Avalability Specification
| Working pressure | 2000PSI-20000PSI |
| Working medium | oil,natural gas,mud |
| Working temperature | -46℃-121℃(L-U) |
| Material class | AA –HH |
| Specification class | PSL1-PSL4 |
| Performance class | PR1-PR2 |
DSA inquiry information
Customers may customize their purchase through the following data:
• Working Pressure
• Type of top & bottom Connection
• Material Class
4. More About Hastelloy C276
Hastelloy Alloy C276 Pipe Flanges Chemical Composition
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| C276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
Hastelloy C276 Plate Flanges Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
Equivalent Grades for C276 Hastelloy Industrial Pipe Flanges
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN | OR |
| Hastelloy C276 | 2.4819 | N10276 | NW 0276 | ХН65МВУ | NiMo16Cr15W | ЭП760 |
