Product Specification
Raised neck flange is a type of flange, which is often used in piping systems to connect pipes, valves, pumps, and other equipment. It is characterized by a slight bulge around the flange hole, where the pipe or fitting is connected. This raised surface is essential to form a seal between the flange and the mating surface, and a gasket is usually used when sealing.
Products Description
● Raised Neck Flange Structure:
1) Raised Area: This part is slightly higher than the rest of the flange face and is mainly compressed with a reinforcing gasket to achieve a tighter seal.
2) Gasket Seat: The raised surface provides an area specifically for placing gaskets, ensuring that the seal can withstand high pressures.
3) Flange Neck: The flange neck tapers smoothly from the flange body to the hole. This taper ensures an even transition of stresses and reduces potential stress points.
4) Neck Length: The neck length varies according to the pressure rating and application requirements. It extends to match the thickness of the pipe, allowing for a seamless welded joint.
5) Butt-welded Connection: The neck is usually butt-welded to the pipe, forming a strong, continuous connection that reduces turbulence and stress concentration.
6) Bore Diameter: It can match the pipe size. The flange's bore diameter usually matches the pipe's inner diameter, allowing for smooth flow and reduced friction losses. With a Smooth Surface: The bore is machined to be very smooth to prevent any obstructions that would impede the flow of fluid or gas.
7) Flange body: There are bolt holes arranged in a circle around the outer edge of the flange, which are used to fix the flange to another component; the overall thickness and diameter of the flange vary with the pressure rating. The flanges with higher pressure ratings are thicker and stronger and can withstand greater loads. The neck or hub is integrated with the body, giving it higher rigidity and strength for high-stress applications.
8) Sealing surface: The convex surface of the flange can be smooth or sometimes serrated to improve the grip of the gasket. The type of surface treatment depends on the type of gasket used and the sealing requirements of the application.
● Raised Neck Flange advantages:
Enhanced sealing ability: The raised surface allows the gasket to be compressed more evenly, thus providing a better seal.
Durability: Raised neck flanges have excellent mechanical strength when used for welding.
● Raised Neck Flange Standards and Specifications:
Raised neck flanges are manufactured to standards such as ASME B16.5, which covers various specifications such as size, pressure rating and material.
Product application
- High-pressure and high-temperature environments: The raised neck design provides greater strength and durability and can be used in situations where pressures and temperatures are high.
- Process and industrial piping: It can be used in the oil and gas, petrochemical, and chemical industries, and power plants.
- Critical sealing applications: Due to the raised face of the flange, these flanges can provide a reliable seal and are often used in applications where leakage must be prevented.
- 8 years of experience in pipe fittings and flange manufacturing.
- Over 98% pass rate for our 14-step QC process.
- A team of 10 experienced engineers dedicated to R&D.
- Comprehensive quality supervision of the entire production process from raw materials, manufacturing, packaging, and warehousing, to container loading.
- A mature logistics management system and our freight forwarding agents ensure our on-time delivery (OTD) rate reaches 100%.
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