A DN32 flange is a type of pipe flange designed to fit pipes with a nominal diameter of 32 millimeters. These flanges are commonly used in various industrial applications, such as in water supply systems, oil and gas industries, and chemical processing plants. Typically manufactured from materials like carbon steel, stainless steel, or alloy steel, DN32 flanges ensure secure connections between pipes, valves, or pumps. They come in different types, such as weld neck, slip-on, and blind flanges, to accommodate various piping systems and pressure requirements, offering both durability and ease of installation.
Key Features And Specifications Of DN32 Flanges
DN 32 Flange Dimensions
As a nominal diameter 32 flange, DN32 refers to the pipe’s approximate internal diameter, making it ideal for small- to medium-scale piping systems. The flange’s size will determine its thickness, bolt circle diameter, and number of bolt holes, which align with industry standards such as ASME, DIN, EN, or JIS.
Types Of DN32 Flanges
Weld Neck Flanges
Weld neck flanges are designed to be welded to the pipe, ensuring a strong, secure connection. They are typically used in high-pressure systems where structural integrity is essential.
Slip-On Flanges
Easier to install than weld neck flanges, slip-on flanges are slid over the pipe before being welded in place. They are commonly used in lower-pressure applications.
Blind Flanges
Blind flanges are used to close off the ends of piping systems, acting as a cap. They are often used in testing or during system maintenance.
Pressure Ratings
DN32 flanges come in various pressure classes, typically ranging from Class 150 to Class 2500 in ASME standards, or PN6 to PN40 in DIN standards. These pressure classes indicate the maximum pressure the flange can withstand, which is crucial when selecting the right flange for specific operating conditions.
What Does DN Mean On A Flange?
DN on a flange stands for “Diameter Nominal” or “Nominal Diameter”. It is a standardized designation used to refer to the approximate internal diameter of pipes, fittings, and flanges, measured in millimeters (mm). The DN value is a key dimension in piping systems and helps to ensure compatibility between different components like pipes and flanges.
For example, a DN32 flange refers to a flange designed to connect pipes with a nominal internal diameter of 32 millimeters. It is important to note that the DN size doesn’t represent the exact internal or external diameter but is used as a reference number to standardize sizing across various international standards such as ISO, DIN, and EN systems.
How Thick Is DN32?
The thickness of a DN32 flange varies depending on its type and applicable standards, typically ranging from 5 mm to 12 mm. For example, weld neck flanges usually have a thickness of approximately 6 to 8 mm, while slip-on flanges are generally around 5 to 7 mm. Blind flanges tend to be thicker, often ranging from 8 to 12 mm, and socket weld flanges typically measure about 5 to 8 mm. For precise dimensions, it’s crucial to refer to the specific standards or manufacturer specifications associated with the flange, as thickness may also vary based on pressure ratings (e.g., PN10, PN16).
Challenges And Considerations
In corrosive environments, the material of the flange must be carefully selected to avoid degradation over time.
Flanges can be subject to thermal expansion, which may affect the integrity of the seal if not adequately accounted for during installation.
Depending on the material, DN32 flanges can be relatively heavy, which may require additional support in overhead or vertical installations.
Elite Piping Manufacture Co., Ltd. is a leading provider of high-quality DN32 flanges, specializing in a diverse range of materials and specifications to meet the needs of various industries.
With a commitment to precision engineering and stringent quality control, Elite Piping ensures that our DN32 flanges are durable, reliable, and compliant with international standards. The company’s extensive experience in manufacturing flanges for applications in water supply, oil and gas, chemical processing, and more, positions us as a trusted partner for clients seeking robust solutions for our piping systems.
Whether for high-pressure applications or standard connections, Elite Piping’s DN32 flanges are designed to deliver optimal performance and safety.
