Product advantages and features

High Joint Integrity: Weld Neck Blind Flanges offer the highest level of joint integrity due to their design, which includes a long, tapered hub that is welded directly to the pipe. This design ensures a strong and stable connection, making them ideal for critical applications where reliability is paramount .

Resistance to Stress Concentration: The gradual transition from the flange to the pipe wall helps distribute mechanical stress evenly, reducing the risk of stress concentration and potential failure under repeated loading conditions .

Superior Performance in Extreme Conditions: These flanges are capable of withstanding extreme temperatures and pressures, including sub-zero and high-temperature environments. Their robust construction makes them suitable for use in harsh industrial settings such as chemical plants, oil refineries, and power generation facilities .

Low Flow Turbulence: The long, tapered hub minimizes turbulence and erosion within the pipeline, ensuring smooth fluid flow and reducing maintenance requirements .

Durability and Longevity: Due to their forged construction and high-quality materials.

Product Type

Standard Weld Neck Blind Flanges: These are the most common type, featuring a long, tapered hub that is welded to the pipe. They are available in various sizes and pressure classes, typically ranging from ASME B16.5 standards (e.g., classes 150, 300, 600) .
Long Weld Neck Blind Flanges: Also known as "nozzles," these flanges have an even longer hub than standard types, making them suitable for applications requiring additional reinforcement or where space constraints are minimal .
Raised Face Weld Neck Blind Flanges: These variants feature a raised face on the flange surface, which provides a better seal when paired with gaskets, enhancing the overall integrity of the connection.

Product Application

Pocess Piping Systems: Weld Neck Blind Flanges are widely used in process piping systems due to their high joint integrity and ability to withstand high pressures and temperatures. They are particularly important in industries such as chemical manufacturing, pharmaceuticals, and oil and gas production .
Boiler and Power Generation Systems: Their ability to handle high temperatures and pressures makes them suitable for use in boiler systems and power generation facilities .
Industrial Infrastructure: They are used in urban infrastructure projects, such as water supply systems and sewage treatment plants, where reliability and durability are essential .
Maintenance and Expansion Systems: Due to their robust design.

Product material

Carbon Steel: Common grades include A105 (Grade I and II), which are suitable for general industrial applications .
Alloy Steel: Grades such as A182 (F5, F8, F9) are used for high-temperature and high-pressure applications due to their superior strength and resistance to corrosion .
Stainless Steel: Used for applications requiring corrosion resistance, such as in chemical plants or food processing industries.

FAQ

Q: Are you a manufacturer, trading company or a third party?

A: We are a manufacturer, and we have builded up our company since 2008.

Q: Where is your factory located?

A: Zhanqi Town, Ningbo, Zhejiang Province, China

Q: What is the delivery time of your machine?

A: 30 days in general.

Q: About the after-sale service, how can you solve the problems occurred of your overseas customer in time?

A: The warranty of our machine is normally 12 months, during this period, we will arrange the international express immediately, to make sure the replace parts to be delivered as soon as possible.

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