Weld Neck Flanges

Discover the superior connection of Weld Neck Flanges, designed for high-stress applications and offering reliable performance with a natural form connection.

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Comprehensive Overview of Weld Neck Flanges

A high-hub flange or tapered hub flange, more commonly known as a weld neck flange, is developed for highly pressurized applications and severe service conditions. A weld neck flange is a circular fitting with a rim around its center that sticks out, contains drilled holes for bolting to another flange. Specifically, the base material of these pipe flanges is extended during manufacturing to serve as an attachment and strengthening device for the vessel through match welding with the large diameter of the hub custom-designed in accordance with shore thick heavy wall pressure vessel quality certified body forming rates ASTM requirement compliant certified plates.

The tapered design allows the flange to be butt-welded directly to the pipe. This creates a strong, rigid connection that uniformly distributes stress loads. Of all types of flanges, weld necks are the most heavy-duty and fail-safe. They can take high heat, tremendous force, and strong pressure. Therefore, they find extensive use in heavy applications across industries like oil and gas, chemicals processing and power generation.

Weld Neck Flange Dimensions and Technical Specifications

Discover the comprehensive dimensions and technical specifications of our Weld Neck Flanges. Designed to help you select the perfect product for your needs.

Specification Details
Flange Type Weld Neck
Material Stainless Steel
Pressure Rating 150# - 2500#
Size Range 1/2" - 48"
Standards ASME B16.5, B16.47
Face Type Raised Face (RF), Flat Face (FF)
Bore Type Standard, XS, XXS
Surface Treatment Anti-rust Oil, Black Paint
Connection Type Butt Weld
Temperature Range -29°C to 600°C
Application Oil & Gas, Petrochemical, Power Generation

Applications of Weld Neck Flanges

Weld neck flanges play a crucial role in various industries such as petroleum, chemical, power, natural gas, metallurgy, and shipbuilding. Understanding their specific application scenarios helps users grasp the product's suitability and benefits in real-world conditions.

Weld neck flanges in a petroleum refinery

Petroleum Industry Applications

In the petroleum industry, weld neck flanges are essential for their ability to withstand high stress and pressure. These flanges are commonly used in pipelines and refineries, ensuring leak-proof connections. Their robust design supports the safe transport of crude oil and other petroleum products, making them indispensable in this sector.

Weld neck flanges in a chemical processing plant

Chemical Processing Plants

Chemical processing plants demand reliable and durable piping connections. Weld neck flanges provide a superior seal, crucial for handling hazardous chemicals and preventing leaks. Their ability to endure high temperatures and corrosive environments makes them ideal for chemical processing applications.

Weld neck flanges in a power generation facility

Power Generation Facilities

In power generation facilities, weld neck flanges are used in high-pressure steam lines and cooling systems. Their robust construction ensures reliable performance under extreme conditions, contributing to the efficiency and safety of power plants. These flanges are essential for maintaining the integrity of the piping systems in such critical applications.

Weld neck flanges in a natural gas distribution system

Natural Gas Distribution

Weld neck flanges are pivotal in natural gas distribution systems due to their ability to handle high pressures and provide secure, leak-free connections. They are used extensively in pipelines and gas processing facilities, ensuring the safe and efficient transport of natural gas across vast distances.

Weld neck flanges in a metallurgical plant

Metallurgical Industry

The metallurgical industry relies on weld neck flanges for their strength and durability in high-pressure and high-temperature environments. These flanges are used in smelting and refining processes, providing reliable connections that withstand the rigors of metallurgical operations. Their application ensures the safe and efficient processing of metals.

Weld neck flanges in a shipbuilding yard

Shipbuilding and Marine Applications

In the shipbuilding industry, weld neck flanges are used in various piping systems, including fuel, water, and exhaust lines. Their robust design and reliable performance are crucial for the safety and efficiency of marine vessels. These flanges ensure secure connections that can withstand the harsh marine environment.

Key Features of Weld Neck Flanges

Discover the outstanding key features of Weld Neck Flanges, designed for high-stress applications and superior connections. Highlighting their materials, manufacturing processes, corrosion resistance, and certification information, this module showcases the advantages that set our weld neck flanges apart, enhancing your confidence in our products.

Premium Material Composition

Our weld neck flanges are crafted from high-grade forged stainless steel, ensuring durability and strength. The material meets ASTM A182M and ASME B16.5 standards, guaranteeing superior performance in various pressure classes.

Advanced Manufacturing Process

Utilizing cutting-edge forging and machining techniques, our weld neck flanges are produced to precise specifications. This ensures a perfect fit and reliable connection, essential for high-stress applications.

Exceptional Corrosion Resistance

Designed to withstand harsh environments, our weld neck flanges offer excellent corrosion resistance. This makes them ideal for use in industries where exposure to corrosive substances is a concern, ensuring long-term reliability.

Comprehensive Certification

Our weld neck flanges are certified to meet international standards, including ASME B16.47 and API 60S. This certification assures you of their quality and suitability for various high-pressure and high-temperature applications.

Get Your Weld Neck Flanges Today

Ready to enhance your piping system with top-quality weld neck flanges? Contact us today for expert advice and a personalized quote. Our team is here to assist you with all your needs, ensuring you get the best fit for your high-stress applications.

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Comprehensive Range of Weld Neck Flanges

Explore our extensive collection of weld neck flanges, including long weld neck flanges and standard flanges. Each product is showcased with detailed specifications and high-quality images to assist you in selecting the ideal flange for your needs. Our comprehensive range ensures you find the perfect fit for high-stress applications, offering superior connection and reliability.

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Common Questions About Weld Neck Flanges

This FAQ module provides detailed answers to common questions about weld neck flanges. Learn about their definition, advantages, and suitable applications to make informed decisions. Our goal is to help you quickly find the information you need about weld neck flanges.

What is a weld neck flange?

A weld neck flange is a type of flange with a neck extension and a weld bevel at the end. It is designed to butt weld directly to a pipe, providing a superior and natural form connection. This flange type is preferred for high-stress applications due to its strength and durability.

What are the advantages of using weld neck flanges?

Weld neck flanges offer several advantages, including superior strength, durability, and the ability to withstand high pressure and temperature. They provide a natural form connection, reducing stress concentration and ensuring a leak-proof seal. These flanges are ideal for critical applications in various industries.

When should weld neck flanges be used?

Weld neck flanges should be used in high-stress applications where the piping system experiences high pressure and temperature. They are commonly used in oil and gas, chemical, and power generation industries. Their robust design makes them suitable for critical applications requiring a reliable and leak-proof connection.

What are the common pressure ratings for weld neck flanges?

Weld neck flanges are designed to common pressure ratings, including Classes 150, 300, 600, 900, 1500, and 2500. These pressure ratings ensure that the flanges can handle varying levels of pressure, making them suitable for different industrial applications.

What are the manufacturing specifications for weld neck flanges?

Weld neck flanges are manufactured according to specifications such as ASTM A182M and ASME B16.5. For flanges over NPS24/DN 600, the specifications include ASME B16.47, API 60S, or BS 3293. These standards ensure the flanges meet quality and performance requirements for industrial use.

How do weld neck flanges compare to other flange types?

Weld neck flanges are preferred for high-stress applications due to their superior strength and durability. Unlike slip-on or lap joint flanges, weld neck flanges provide a more robust and leak-proof connection. They are more expensive but offer better performance in critical applications.

ZheJiang XILIQI technology Co., Ltd. in R& D, Manufacture and Sales of Stain- less steel pipe fittings,It is located at the Shuige Industrial Zone, Lishui.
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