Forged Flange
Forged Flange
A Flange is a key component in piping systems and pressure vessels, providing a secure way to connect pipes, valves, or equipment. A Flange, by defination, secures, stregnthens, or attaches. For us, Flanges create strong, leak-proof joints.
Since 1983, JSFITTINGS has been a trusted China exporter and manufacturer. We deliver stock and custom flanges in ANSI, API & AWWA standards - with over 50 material grades and pressure classes from 150 to 20K. Request a quote, view our catalog.
Most Popular Flange Styles
Providing ASME Code & Non-Code Industrial Flanges
About Us
Leading Manufacturer of High quality Industry forged steel flanges Since 1983. Your One-Stop Industrial Partner for Custom industry flanges Components
JSFITTINGS has served the petrochemical, process, and waterworks industries for over 40 decades.
Flange Specifications
We provide ANSI, API, and AWWA pipe flanges in carbon steel, stainless steel, and alloys steel. Styles we offer include weld neck, slip on, blind, threaded, socket weld, lap joint, orifice flanges, and custom flanges in sizes from 1/2″ to 203″.
Pressure classes we offer include 75, 125, 150, 175, 250, 300, 350, 400, 600, 900, 1500, 2500, 5K, 10K, 15K, 20K.
Why choose forged steel flanges?
The wide temperature and pressure range makes forged carbon steel flanges an attractive solution for several industrial applications, and have proven to be one of the least expensive pricing options.
The most common material grade in use today is A105 forged carbon steel, with sizes ranging from 1/2“ – 24” in ASME B16.5, 26” – 60” in ASME B16.47, and 26” – 96” in B16.1 (for temperatures ranging from ambient up to 1,000 Fahrenheit and pressure between 20 – 6,170 psi).
Supports
We provide a wide variety of flanges in all sizes and specifications.
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FAQ
Q: What is a Flange used for?
A: A flange is essential for connecting pipes, valves, pumps, and other equipment in piping systems. It ensures a secure, leak-proof joint and facilitates assembly, disassembly, and maintenance of the system.
Q: What are the 3 most common Flange types?
A: The most commonly used flange types are:
Weld Neck Flanges – Ideal for high-pressure applications with a tapered hub for structural integrity.
Slip-On Flanges – Easy to install and cost-effective for low-pressure systems.
Blind Flanges – Used to seal the end of pipelines or pressure vessels.
Q: What is FF and RF flange?
A: FF (Flat Face) and RF (Raised Face) flanges refer to the type of sealing surface on the flange. An FF flange has a flat surface across the entire face, making it suitable for applications where gasket seating must be fully flush.
These are often used in low-pressure applications. An RF flange has a raised surface around the bore, which helps concentrate gasket compression for a better seal, making it more common in high-pressure and high-temperature applications.
Q: How are flanges specified?
A: Flanges are specified based on several factors, including their nominal pipe size (NPS), pressure class (e.g., 150, 300, 600, etc.), face type (FF, RF, or RTJ), material (such as carbon steel, stainless steel, or duplex steel), and standard compliance (such as ASME B16.5 or EN 1092-1).
♦ The Flanges You Need, When You Need Them ♦
Since 1983, JSFITTINGS has delivered precision Flange solutions with speed, affordability, and expertise. Let’s discuss your project today!


