API Double Studded Adapter (DSA) Flange | API 6A DSA Adapter
What Is an API Double Studded Adapter (DSA)?
The API Double Studded Adapter (DSA) is a specialized oilfield flange used to connect two flanges with different pressure ratings, sizes, or configurations in wellhead and Christmas tree systems. DSAs are manufactured according to API 6A specifications and are commonly used in high-pressure oil and gas production equipment.
A Double Studded Adapter features two sets of bolt holes on both sides, allowing it to connect different flanges or equipment while maintaining reliable sealing and structural strength.
DSA flanges are widely used in drilling systems, wellhead assemblies, and high-pressure pipeline connections.
C&N is a professional manufacturer of API Double Studded Adapter Flange in China,
API Double Studded Adapter Flange(DSA Flange)
AISI 4130 Double Studded Adapter Flange,AISI 4130 DSA Flange
Double Studded Adapter Flange (DSAF) or Double Studded Adapter (DSA) is a flange with a through bore and a ring groove on each side, drilled and tapped bolt hole sets on both sides and tapped end studs complete with nuts fitted on both sides. Unlike a spacer, the two sides are usually different in size and/or pressure rating. Double studded adapter flanges are commonly utilized to connect and adapt flanges with different nominal sizes, pressure ratings, and configurations.
- Double and single types are available.
- Material can be customized.
- Size and pressure ratings can also be customized.
- The matching bolts and nuts of all materials are available.
- Weld overlay is available.
API Double Studded Adapter Specifications
| Item | Specification |
|---|---|
| Standard | API 6A |
| Product Type | Double Studded Adapter (DSA) |
| Size Range | 1-13/16″ – 30″ |
| Pressure Rating | 2000 PSI – 20000 PSI |
| Sealing Type | RTJ / BX Ring |
| Temperature Class | K (-60°C) to Y (+345°C) |
| PSL | PSL1 – PSL3 |
| PR | PR1 / PR2 |
Design Standards:
ASME B16.5, API 6A, API 17D, MSS SP-44,
ASME VIII Div. 2.0, DNV OS F101,
ISO 15590-2, ASME B31.3, ASME B31.8
Materials:
- ASTM A105/A105N, ASTM A350 LF2 CL2, A350 LF6 CL2
- ASTM A694 F42, F46, F52, F60, F65, F70
- ASTM A182 F304/304L, F316/316L
- API 45K, 60K, 75K
- AISI 4130 (M), 4140, 4340, 8630(M)
- ASTM A182 F51/UNS S31803, F53/UNS S32750
Sizes, Classes:
Any size and pressure rating
Cladding Materials:
- Stainless Steel 304/304L and 316/316L, 317L, 347, 904L, 410
- Inconel® 600/625 Incoloy® 800/825
- Duplex Stainless Steel SS31803, 2205, SS32760, 2507, 2209
- Hastelloy® C276, C22
- Monel K-500, 400
- Other Special Alloy
Types of API Double Studded Adapters
Double Studded Adapters are manufactured in several configurations depending on pressure rating and connection type.
Common configurations include:
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6A × 6A Double Studded Adapter
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6A × 16A Adapter
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Different pressure rating DSA
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Different bore size DSA
These adapters allow flexible connection between different oilfield components.
Applications of API Double Studded Adapter Flanges
API DSA flanges are widely used in oil and gas drilling and production systems.
Wellhead Equipment
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Wellhead assemblies
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Christmas tree equipment
Oilfield Drilling Systems
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Blowout preventer (BOP) connections
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Drilling manifolds
Pipeline Systems
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High-pressure oil pipelines
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Gas transmission systems
Offshore Platforms
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Subsea production equipment
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Offshore drilling systems
API Double Studded Adapter Manufacturer
We are a professional manufacturer of API Double Studded Adapters (DSA) in China, supplying high-quality flanges for oilfield and wellhead equipment.
Our products include:
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API Double Studded Adapters
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API Blind Flanges
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API Threaded Flanges
All products can be supplied with EN 10204 3.1 material certificates and third-party inspection.
