Weld Neck Flanges: High-Strength Solutions for Demanding Industrial Applications
Release Time:
Jun 11,2025
Designed for high pressure and temperature, weld neck flanges provide superior rigidity and leak-free connections across oil, gas, chemical, marine, and nuclear industries.
Structural Features:
A flange connected to the pipeline by "butt welding" at the neck, designed to withstand high pressure and high temperature conditions.
Features a prominent long neck
Flange faces available in RF / RTJ / FF types
Welding method: Butt weld
Forms an integral structure with the pipeline, offering excellent rigidity, high temperature and pressure resistance
High-quality welds required; non-destructive testing such as radiographic or ultrasonic inspection is often needed
Applications:Oil | Natural Gas | Chemical Industry | Power Generation
Marine | Nuclear Industry | Pipeline Systems | Equipment Interfaces
Common Size Standards: ASME B16.5 (2”–24”)
ASME B16.47 (Above 24”)
Pressure Ratings:
150#, 300#, 600# up to 2500#
Flange Face Types:
RF (Raised Face), RTJ (Ring-Type Joint), FF (Flat Face)
Materials:
Carbon Steel, Stainless Steel, Alloy Steel, Duplex Stainless Steel
Recommendation:
The harsher the service conditions, the more recommended the use of weld neck flanges.
Ideal for applications requiring high strength and leak-free connections.
Other News
Subscribe to us for more product information
We will contact you within one working day. Please pay attention to your email.
Contact Info
Add：
Middle Section of Wuliyao, Yanshan County, Cangzhou City, Hebei Province, the People's Republic of China
Share Us
