Double studded adapter flange is a combination of flanges of different sizes and pressure ratings.
We supply ideal DSA for reliable and consistent performance on their production system.
Our adapter flanges are in various sizes and pressure ratings as per customer’s specified thickness, consistent with design considerations.
It is the important device to connection the different flange for wellhead, so the material of the body and studs and nuts shall be conformed the related requirements.
The size is in accordance with API flange certification.
Features
1. Can be used to connect flanges with any combination of sizes and pressure ratings
2. Custom DSA’s are available to transition between API, ASME, MSS or other styles of flanges
3. Supplied with standard or customer specific thicknesses
4. Normally provided with tap-end studs and nuts
5. Available for general service and sour service in compliance with any temperature rating and material requirements specified in API Specification 6A
6. Available with Stainless Steel 316L or Inconel 625 corrosion resistant ring grooves
Note
Customers may customize their purchase through the following data:
Working Pressure
Type of top & bottom Connection
Material Class
Technical Parameter Table for the Double Studded Adapter Flange (DSAF):
🔧 DSAF Technical Parameters Table
| DSAF Description | Flange Thickness (T) (mm) |
|---|---|
| 2-1/16” x 5M To 3-1/8” x 5M | 70 |
| 2-1/16” x 10M To 4-1/16” x 10M | 80 |
| 3-1/16” x 10M To 4-1/16” x 10M | 130 |
| 3-1/16” x 10M To 4-1/16” x 5M | 80 |
| 4-1/16” x 5M To 2-1/16” x 5M | 75 |
| 4-1/16” x 5M To 3-1/8” x 5M | 83 |
| 4-1/16” x 2M To 4-1/16” x 5M | 80 |
| 7-1/16” x 10M To 13-5/8” x 10M | 170 |
| 7-1/16” x 5M To 13-5/8” x 5M | 150 |
| 11” x 15M To 18-3/4” x 15M | 256 |
| 11” x 5M To 13-5/8” x 5M | 144 |
| 13-5/8” x 10M To 11” x 10M | 267 |
| 13-5/8” x 3M To 16-3/4” x 2M | 150 |
| 13-5/8” x 10M To 18-3/4” x 15M | 256 |
| 13-5/8” x 5M To 18-3/4” x 15M | 256 |
| 18-3/4” x 15M To 20-3/4” x 3M | 270 |
| 20-3/4” x 3M To 18-3/4” x 15M | 256 |
| 21-1/4” x 2M To 18-3/4” x 15M | 256 |
📐 General Specifications
| Parameter | Details |
|---|---|
| Working Pressure | 2000 PSI – 20,000 PSI |
| Working Medium | Oil, Natural Gas, Mud |
| Temperature Range | -46°C to 121°C (L–U) |
| Material Class | AA – HH |
| Specification Class | PSL1 – PSL4 |
| Performance Class | PR1 – PR2 |
Better Petroleum Co., Ltd. was established in 2001. Our company is located in Dongying city which has the second largest Oilfield (Shengli Oilfield) in China.
We are a company, which conducts scientific research, development, manufacture, sale and after sale service, is one enterprise for oilfield tool and equipment manufacturer.
We cover an area of more than 9000 square meters which manufacture different oilfield products.
Our main products include drilling equipment, oil production equipment, oil well service tools. Such as sucker rod, drill pipe, OCTG products, bridge plug.
Currently, our products are already exported to North America, South America, Middle East, Middle Aisa, India and other countries and regions. The warranty period of all our products is 18 months.
We are an I S O 9 0 0 1, I S O 1 4 0 0 1, I S O 4 5 0 0 1,API certified company and have all the quality systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure that all products match the quality & reliability Standards.
We also have an independent measurement and inspection department, the inspection and measuring tools are fully equipped, we control each process to ensure that all products are qualified.
Better Petroleum Co., Ltd. with perfect attitude, product and service, is going to make further development together with customers at home and abroad .
Double Studded Adapter Flange (DSAF) – Reliable, Customizable, and API Certified
A Double Studded Adapter Flange (DSAF) is a critical component used in oilfield systems to connect flanges of different sizes and pressure ratings.
This versatile flange solution provides a safe and efficient means of transitioning between equipment and piping with varying specifications, ensuring consistent performance under demanding working conditions.
At Better Petroleum we manufacture and supply high-quality DSAFs tailored to meet the unique operational requirements of our clients.
Our adapter flanges are available in a wide range of sizes and pressure ratings.
They are produced based on customer-specified thickness, ensuring a precise fit while meeting strict API design considerations.
🔩 Function & Material Reliability
DSAFs are essential components in wellhead systems.
They serve as transitional joints between different types of flanges, allowing seamless integration of components across a production line. Given their role in high-pressure, high-temperature environments, the body, studs, and nuts of our DSAFs are made from materials that strictly conform to API standards.
This guarantees high strength, pressure resistance, and corrosion durability in both general and sour service environments.
All sizes are produced in accordance with API flange certification, ensuring compatibility and interchangeability across various oilfield equipment brands.
✨ Features of Our DSAF Products
Multi-Standard Compatibility – Connects flanges of any combination of size and pressure rating (API, ASME, MSS, etc.).
Custom Design Available – Clients can customize size, thickness, and material to meet site-specific needs.
Wide Thickness Range – Supplied with standard or customer-specific flange thicknesses.
Complete with Fasteners – Typically includes tap-end studs and nuts for complete assembly.
API 6A Compliance – Built for general and sour service under any temperature rating and material class.
Corrosion Protection – Options for Stainless Steel 316L or Inconel 625 ring grooves to resist corrosion in harsh environments.
🧾 Customization Options
Customers can specify the following data when placing orders:
Working Pressure (2,000 – 20,000 PSI)
Top & Bottom Connection Type
Material Class (AA – HH)
📊 Sample Technical Parameters
| DSAF Description | Flange Thickness (mm) |
|---|---|
| 2-1/16” x 5M To 3-1/8” x 5M | 70 |
| 4-1/16” x 2M To 4-1/16” x 5M | 80 |
| 13-5/8” x 5M To 18-3/4” x 15M | 256 |
| … (More on request) |
General Parameters:
Medium: Oil, Gas, Mud
Temperature Range: -46°C to 121°C
Spec Class: PSL1 – PSL4
Performance Class: PR1 – PR2
🏭 About Us
Better Petro established in 2001 and located in Dongying, China—home to the second-largest oilfield in the country—specializes in the development and manufacture of oilfield equipment and tools.
Our 9,000+ m² facility produces:
Drilling equipment
Oil production tools
OCTG and well service equipment
With exports to North America, Middle East, India, and beyond, all products come with an 18-month warranty. We are certified with ISO 9001, ISO 14001, ISO 45001, and API, ensuring full compliance with international quality standards.
At Better Petroleum, our focus is on quality, performance, and partnership.
With top-grade materials, certified systems, and dedicated service, we look forward to building long-term success with clients around the world.
Let us be your reliable supplier for high-performance Double Studded Adapter Flanges.
