3 Inch Weld Neck Flanges EN1092-01 PN6 Weld Neck Raised Face Carbon Steel Weld Neck Flange A105 for Water Treatment and Chemical Industry Applications

Introduction of EN1092-01 Weld Neck Flanges:

The EN1092-01 weld neck flange is widely esteemed as a preferred choice among flange types due to its outstanding features and benefits. It excels in providing a robust, seamless connection by means of direct butt welding to pipes, ensuring exceptional reliability in high-pressure environments. The elongated neck enhances strength and durability, complemented by a weld that guarantees a secure, leak-resistant joint.

Its tapered neck design plays a crucial role in even stress distribution, effectively mitigating the risk of localized stress concentrations and potential failures. The smooth transition from the flange's neck to the pipe's bore optimizes flow dynamics, thereby reducing turbulence and minimizing pressure drop throughout the system.

Furthermore, the extended neck of the weld neck flange simplifies inspection and maintenance tasks, adding to its practicality and ease of access for ongoing operational needs.

Specifications of EN1092-01 Weld Neck Flanges:

1.Dimensions are in millimeters(mm).

2.Dimensions can be specified by different purchasers.

Common Materials We Can Provide for Weld Neck Flanges:

Grades of Carbon Steel:

ASTM A105: This is a common grade of carbon steel used for weld neck flanges. It is a forged carbon steel specifically designed for high-temperature service and offers excellent weldability and toughness.

ASTM A350 LF2: LF2 is a low-temperature carbon steel grade commonly used for weld neck flanges in applications where low-temperature toughness is required.

ASTM A694 F52/F60/F65/F70: These grades are high-yield carbon steel materials used for weld neck flanges in applications requiring high strength and impact resistance.

Grades of Stainless Steel:

ASTM A182 F304/F304L: These grades of stainless steel are austenitic and commonly used for weld neck flanges. They offer good corrosion resistance, excellent weldability, and are suitable for a wide range of applications.

ASTM A182 F316/F316L: Similar to F304/F304L, these grades are also austenitic stainless steels with improved corrosion resistance, particularly in chloride environments.

ASTM A182 F321: F321 is an austenitic stainless steel grade containing titanium, which provides enhanced resistance to intergranular corrosion. It is often used for weld neck flanges in high-temperature applications.

ASTM A182 F347: F347 is a stabilized stainless steel grade with the addition of niobium, which improves its resistance to intergranular corrosion. It is commonly used for weld neck flanges in applications involving elevated temperatures.

Types of Weld Neck Flanges in the Applications:

There are two main types of weld neck flanges: standard and long neck. Standard weld neck flanges are typically used in conjunction with butt weld fittings. They are designed to align with the inside diameter of the pipe or fitting they are connecting to, ensuring a seamless flow path and a secure, leak-free joint.

On the other hand, long weld neck flanges find application primarily with vessel nozzles and equipment connections. These flanges feature an extended neck, which facilitates a gradual transition from the flange to the vessel or equipment. This design is advantageous in scenarios where additional space is needed for insulation, or when there is a requirement for mounting instruments or other attachments.

Both types of weld neck flanges are engineered to match the internal diameter of the pipe or fitting they interface with, ensuring compatibility and reliability in various industrial applications. The choice between standard and long weld neck flanges depends on specific operational requirements such as pressure, temperature, and the structural demands of the installation.

Why We Choose Weld Neck Flanges?

Outstanding Characteristics of Weld Neck Flanges in the Applications:

Weld neck flanges are considered among the strongest types of flanges primarily due to their design features and the nature of their connection method.

Butt-Welded Connection: Weld neck flanges are welded directly to the pipe. The welding process involves fusing the neck of the flange to the pipe's end, creating a continuous and robust connection. This method ensures that the joint is integral and resistant to leakage under high-pressure conditions.

Tapered Hub Design: Weld neck flanges have a long, tapered hub or neck. This design provides several strength advantages:

Reduced Stress Concentration: The gradual taper distributes stress more evenly compared to flat or raised face flanges. This minimizes the risk of localized stress concentrations that could lead to fatigue or failure.

Enhanced Structural Integrity: The extended neck acts as a reinforcement, adding structural strength to the flange and the joint. It helps in bearing the load and resisting bending or deformation.

Smooth Transition: The smooth transition from the flange's neck to the pipe's bore improves flow characteristics within the piping system. This reduces turbulence and pressure drop, which can occur in other flange types with abrupt transitions.

Suitability for High-Pressure Applications: Due to their robust construction and welded connection, weld neck flanges are well-suited for applications requiring high pressure handling capabilities. They provide a secure and reliable sealing mechanism that withstands significant internal pressures without compromising integrity.

Longevity and Reliability: Weld neck flanges are known for their durability and long service life when properly installed and maintained. The welded joint eliminates potential weak points associated with bolted connections, such as gasket failures or bolt loosening over time.

Versatility: Weld neck flanges are available in various materials, sizes, and pressure ratings, making them versatile for a wide range of industrial applications where strong, leak-proof connections are essential.

Founded in 2007, Shaanxi Peter International Trade Co., Ltd. is a leading Chinese manufacturer and exporter dealing in flanges, fittings, and other steel products according to different standards and specifications for industrial and civil fields such as petroleum, chemical, power, aerospace, and navigation. Our general manager, Mr. Kong Xiang Dong, has been engaged in this industry since the 1990s and established his own company in 2007.

Headquartered in Xi'an, Shaanxi Province, China, we are now exporting our products globally and have earned a good reputation due to our excellent performance in delivery, quality control, and competitive market prices. All employees involved in product management possess rich product knowledge and experience, and all factories engaged in product export hold ISO approval or other authoritative certifications to ensure products are produced under strict quality control.

If you have any requirements or inquiries, please contact us directly. We assure you of a mutually beneficial business cooperation. Our aim is to develop long-term business partnerships with customers worldwide. We hope that our company will become one of your stable and reliable business partners in China.