DIN 2627 Forging Carbon Steel and Stainless Steel Weld Neck Flanges WNRF PN400 for Industrial Purposes

DIN 2627 Carbon Steel and Stainless Steel Weld Neck Flanges WNRF PN400 for Industrial Purposes

Introduction:

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DIN weld neck flanges are a type of pipe flange that is designed to be butt-welded to the end of a pipe. They have a long tapered hub that gradually merges with the pipe, providing reinforcement and reducing stress concentrations. The flange is then bolted to another weld neck flange or a compatible flange using bolts or studs.

DIN standards are widely used in Europe, particularly in Germany, and DIN weld neck flanges conform to the specific dimensional and technical requirements set by DIN standards. These flanges are available in various materials such as carbon steel, stainless steel, and alloy steel, allowing them to be used in a wide range of applications in industries such as oil and gas, petrochemical, power generation, and more.

Description of DIN Weld Neck Flanges:

A weld neck flange, also known as a tapered hub flange or high-hub flange, is a type of flange designed to distribute stress along the length of the pipes, reducing stress concentration at the flange's base. There are two main designs of weld neck flanges: one is used with pipes, while the other, longer type is typically used in process plants where pipe length is not required.

The weld neck flange consists of a round fitting that extends beyond the flange's circumference. These flanges are usually made from forged materials and are welded to the pipes.The flange's rim is equipped with multiple holes that allow it to be bolted to another flange. This design provides structural integrity and improves the overall strength of the joint.

DIN weld neck flanges are a type of flange widely used in industrial piping systems. These flanges conform to the dimensional and technical standards set by the Deutsches Institut für Normung (DIN), a German organization that establishes technical standards.

DIN weld neck flanges are designed with a long tapered hub or neck that extends from the flange. This neck is intended to be butt-welded to the end of a pipe, providing a strong and permanent connection. The weld neck design helps to distribute stress along the length of the pipe, reducing stress concentrations at the flange's base and improving the overall structural integrity of the joint.

Key features and characteristics of DIN weld neck flanges include:

Raised Face: Most DIN weld neck flanges have a raised face, a small flat surface around the bore of the flange. This raised face allows for better alignment of the gasket and improves the sealing performance of the joint.

Pressure Ratings: DIN weld neck flanges are available in various pressure ratings, typically ranging from PN6 to PN100. The pressure rating indicates the maximum pressure that the flange can withstand safely.

Material Options: DIN weld neck flanges are manufactured in different materials, including carbon steel, stainless steel, and alloy steel. The material choice depends on factors such as the application requirements, fluid being conveyed, temperature, and corrosion resistance needs.

Size and Dimensions: DIN weld neck flanges are available in a range of sizes, with dimensions specified by the DIN standards. These dimensions include flange diameter, bore size, bolt hole diameter, flange thickness, and overall height.

DIN 2627 Weld Neck Flange Dimensions:

1.Dimensions are in millimeters(mm).

2.Dimensions can be specified by different purchasers.

Materials of DIN Weld Neck Flanges:

DIN weld neck flanges are available in various materials to suit different applications and operating conditions. The material selection for DIN weld neck flanges depends on factors such as temperature, pressure, corrosion resistance, and compatibility with the conveyed fluid or gas.

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.

Applications of DIN 2627 Weld Neck Flanges:

DIN 2627 weld neck flanges are specifically designed for use in specific applications where their unique characteristics are required. Here are some common applications of DIN 2627 weld neck flanges:

High-Pressure Systems: DIN 2627 weld neck flanges are often used in high-pressure systems, such as in oil and gas pipelines, chemical plants, and power generation facilities. Their robust construction and reliable sealing capabilities make them suitable for withstanding high pressures and preventing leaks.

High-Temperature Environments: These flanges are also commonly employed in applications where elevated temperatures are involved, such as in steam lines, heat exchangers, and thermal power plants. DIN 2627 weld neck flanges can withstand high temperatures without deformation or loss of integrity.

Petrochemical Industry: The petrochemical industry extensively uses DIN 2627 weld neck flanges due to their ability to handle corrosive fluids and gases. They are commonly used in refineries, chemical processing plants, and offshore platforms, where resistance to corrosion and durability are essential.

Pipelines: Weld neck flanges are commonly used in pipeline systems to connect pipes and provide a secure and leak-proof joint. DIN 2627 weld neck flanges are utilized in various pipeline applications, including oil and gas transmission pipelines, water and wastewater pipelines, and industrial piping systems.

Shipbuilding: Weld neck flanges, including DIN 2627, are prevalent in shipbuilding applications. They are used in various systems on ships, such as fuel and oil transfer lines, cooling systems, and hydraulic systems. The weld neck flanges provide a reliable connection that can withstand the demanding conditions at sea.

Food and Beverage Industry: DIN 2627 weld neck flanges made from stainless steel are suitable for applications in the food and beverage industry. They are used in processing equipment, such as tanks, pumps, and pipelines, where hygiene and corrosion resistance are critical.