Socket Weld Flanges are critical components in high-pressure piping systems, designed to ensure secure, leak-proof connections for small-diameter pipes. This article provides an in-depth analysis of the product’s specifications, advantages, and applications, along with insights into the manufacturing standards and company background. Whether you’re an engineer, procurement specialist, or industry professional, this guide offers valuable information to help you make informed decisions.
Product Features
Socket Weld Flanges are engineered for small-diameter, high-pressure piping systems. Their unique design features a recessed socket that allows the pipe to be inserted and welded, creating a smooth bore and improved flow characteristics. This design minimizes turbulence and pressure drop, ensuring efficient fluid dynamics. The internal stop in the flange prevents the pipe from sliding through during welding, simplifying alignment and enhancing installation accuracy.
Constructed from durable materials such as carbon steel (ASTM A105, P235GH, P245GH, etc.), stainless steel (ASTM A182, 304, 306), and alloy steel, these flanges offer exceptional mechanical strength and corrosion resistance. Surface coatings like black paint, galvanization, grease, or epoxy paint further enhance their durability, making them suitable for harsh environments.

Socket Weld Flange: A close-up view of the recessed socket and welding area.
Technical Specifications
| Parameter | Details |
|---|---|
| Pressure Rating (PN/CLASS) | PN6 – PN40 / Class150 – Class2500 |
| Diameter (DN/INCH) | DN10 – DN2000 / 1/2In – 24In / S.A 12In – 60In |
| Materials (MAR) | Carbon Steel (ASTM A105, P235GH, P245GH, P250GH, P265GH, ST37-2), Stainless Steel (ASTM A182, 304, 306) |
| Standards | ASME, EN, JIS, DIN, BS, KS, GOST, SABS, ATK |
| Surface Coating | Black paint, Galvanize, Grease, Epoxy paint |
| Connection Type | Socket weld with internal stop to prevent pipe slippage |
Applications
Socket Weld Flanges are widely used in industries where high-pressure and high-temperature conditions are prevalent. Their ability to create leak-proof joints makes them ideal for critical applications such as:
- Oil and Gas: In pipelines for transporting gases, liquids, and slurries under high-pressure conditions.
- Chemical Processing: For systems handling corrosive substances, where reliability is paramount.
- Power Generation: In steam lines and hydraulic systems requiring durability and efficiency.
- Water Treatment: For high-pressure water distribution and filtration systems.

Socket Weld Flange Welding Process: Ensuring a secure, leak-proof connection.
Standards and Compliance
The Socket Weld Flange Standard ensures consistency and safety across piping systems. The most commonly referenced standard is ASME B16.5, which outlines dimensions, pressure ratings, and material specifications for flanges made from carbon steel, stainless steel, and alloy steel. This standard guarantees compatibility and reliability in industrial applications.
Socket Weld Flanges may also comply with international standards such as API 6A for oil and gas applications or DIN for European markets. Adhering to these standards is crucial for maintaining the integrity of piping systems in demanding environments.
According to the National Institute of Standards and Technology (NIST), “Standardization of industrial components like flanges ensures interoperability, safety, and efficiency in critical infrastructure.” This aligns with the rigorous testing and certification processes followed by manufacturers like Hebei Jiuyuan Pipeline Manufacturing Co., Ltd., a leading supplier of high-quality flanges.
Company Background
Hebei Jiuyuan Pipeline Manufacturing Co., Ltd. (English: HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD) is a reputable manufacturer specializing in industrial piping components. With a focus on quality, innovation, and adherence to international standards, the company provides reliable solutions for global clients. Their product line includes Socket Weld Flanges, which are designed to meet the stringent requirements of high-pressure systems.
As a trusted supplier, Hebei Jiuyuan emphasizes product excellence, ensuring that every flange undergoes rigorous testing to guarantee performance and longevity. Their commitment to customer satisfaction is reflected in their comprehensive support, from technical consultations to after-sales services.

Socket Weld Flange in Application: A real-world example of its use in industrial piping systems.
Advantages of Socket Weld Flanges
Socket Weld Flanges offer several advantages over other connection types, including:
- Leak-Proof Joints: The welding process creates a seamless connection, minimizing the risk of leaks.
- Smooth Flow Characteristics: The recessed socket design ensures a continuous flow path, reducing turbulence and pressure loss.
- Easy Installation: The internal stop simplifies alignment, making the welding process more efficient.
- Corrosion Resistance: Materials like stainless steel and epoxy coatings protect against environmental degradation.
- Cost-Effective: Compared to threaded connections, socket weld flanges reduce maintenance and replacement costs over time.
Industry Relevance and Future Trends
The demand for Socket Weld Flanges continues to grow, driven by the expansion of industries such as energy, chemical processing, and water treatment. As global infrastructure projects prioritize safety and efficiency, the adoption of standardized, high-performance components becomes critical.
Looking ahead, advancements in materials science and manufacturing technologies are expected to further enhance the capabilities of Socket Weld Flanges. Innovations such as nanocoatings and smart sensors may integrate into future designs, offering real-time monitoring and improved durability.
Conclusion
Socket Weld Flanges are indispensable in high-pressure piping systems, combining robust design, durability, and compliance with international standards. Their ability to deliver leak-proof, efficient connections makes them a preferred choice for industries where reliability is non-negotiable. With manufacturers like Hebei Jiuyuan Pipeline Manufacturing Co., Ltd. leading the way in quality and innovation, the future of Socket Weld Flanges looks promising.
References
National Institute of Standards and Technology (NIST). “Standardization of Industrial Components.” Retrieved from https://www.nist.gov.
ASME B16.5. “Standard for Pipe Flanges and Flanged Fittings.” Retrieved from https://www.asme.org.
Hebei Jiuyuan Pipeline Manufacturing Co., Ltd.. “Socket Weld Flange Specifications.” Retrieved from https://www.hbjypipeline.com/socket-weld-flange.html.
HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD . is located in Mengcun Hui Autonomous County, known as the “Capital of Elbows”, with a registered capital of 10.09 million yuan.pipe fittings and flanges manufacturers The company is equipped with advanced production facilities, strong technical capabilities and strict testing equipment, ranking among the top in the industry for its excellent quality and service.flanges and pipe fittings We have always been committed to technological innovation and improving product quality.flange manufacturer We have passed the ISO9001:2008 quality system certification and the special equipment certification for pressure pipelines. Our company specializes in the production of flanges, elbows, bends, reducers, blind plates, manholes, pipe caps, tees, crosses, socket fittings, power plant accessories, precision casting and threaded joints.pipe fitting manufacturer We also customize various special and difficult pipe fittings.pipe flange|super blog