Threaded Flanges

Threaded flanges are used in piping systems where a threaded connection is preferred instead of a welded one. That gives threaded flanges a very different role from blind, weld neck, slip on, lap joint, and socket weld flanges. Buyers usually look for threaded flanges when the piping system is already built around threaded pipe connections and the goal is to create a bolted flange connection without switching over to a welded flange style.

PipingNow offers threaded flanges in the stainless steel grades and pressure classes shown in this collection, including 150#, 300#, and 600# options in 304L stainless steel and 316L stainless steel. For customers shopping specifically by flange type, a dedicated threaded flanges page makes it easier to compare the correct products by class, size, and stainless grade without sorting through unrelated flange styles.

Built for Threaded Piping Connections

The defining feature of a threaded flange is the connection style itself. Instead of being welded onto the pipe or used as part of a stub end assembly, a threaded flange is selected when the piping system calls for a threaded connection. That makes threaded flanges a practical option for installations where welding is not part of the planned connection method and where the specified piping layout is already based on threaded components.

Threaded flanges are often used for:

threaded stainless steel piping systems
smaller-size industrial piping runs
maintenance and replacement work
systems where welding is not the preferred connection method
service conditions requiring 150#, 300#, or 600# class options
applications where the flange type needs to match an existing threaded system design

Threaded Flanges by Class and Material

Threaded flange selection usually starts with pressure class, nominal size, and stainless grade. This collection includes 150#, 300#, and 600# threaded flanges in 304L stainless steel and 316L stainless steel. Keeping threaded flanges grouped under their own type page helps buyers compare the right connection style across class ranges instead of filtering through flange products designed for welded or closure-based applications.

150# threaded flanges
300# threaded flanges
600# threaded flanges
304L stainless steel threaded flanges
316L stainless steel threaded flanges
threaded flanges for industrial piping systems

304L and 316L Stainless Steel Options

Material choice matters just as much as pressure class. 304L stainless steel threaded flanges are a practical fit for many general stainless piping applications, while 316L stainless steel threaded flanges are commonly selected where additional corrosion resistance is needed. Because this collection stays focused on stainless threaded flanges, it gives buyers a cleaner way to compare available grades without crossing over into carbon steel, aluminum, or unrelated flange connection styles.

Why Buyers Choose Threaded Flanges

Threaded flanges are often chosen because the system already calls for a threaded connection method. In many cases, the priority is consistency with the existing piping design, easier component replacement, or avoiding a change to a different flange style. For buyers working within a threaded piping layout, shopping a dedicated threaded flanges category makes it easier to stay inside the correct connection type from the start.

What to Check Before Ordering

Before ordering a threaded flange, confirm the pressure class, nominal size, material grade, and mating connection requirements. Since threaded flanges are chosen for a specific connection style, it is also important to verify that the project actually calls for a threaded flange rather than a blind, weld neck, slip on, lap joint, or socket weld flange. Matching the flange type is only part of the job; the class, size, and stainless grade also need to fit the piping system correctly.

Before ordering, check:

pressure class
nominal size
material grade
threaded connection requirement
compatibility with the mating flange
service conditions
project specification for threaded flange style

Where Threaded Flanges Fit Best

Threaded flanges are a strong fit where the piping system is already designed around threaded connections and the buyer needs a flange that matches that layout cleanly. They are especially useful in smaller-size stainless piping systems where connection type consistency matters more than forcing the job into a welded flange category. For buyers who already know they need threaded flanges, a dedicated page is the fastest way to get into the right products without sorting through flange styles intended for welded transitions, socketed connections, line closure, or rotating stub end assemblies.

FAQs

What is a threaded flange?
A threaded flange is a flange type used in piping systems that require a threaded connection rather than a welded flange connection.

What pressure classes are available?
Threaded flanges in this collection are available in 150#, 300#, and 600# pressure classes.

What materials are offered?
Material options in this collection include 304L stainless steel and 316L stainless steel.

Why choose a threaded flange?
Threaded flanges are often chosen for systems that are already built around threaded connections and need a flange that matches that connection style.

What should I match before ordering?
Match the pressure class, nominal size, material grade, mating connection details, service conditions, and the specified flange type for the job.

How is a threaded flange different from a socket weld flange?
A threaded flange is used for a threaded connection style, while a socket weld flange is designed for a socketed welded connection.