Home / Products / Flanges / Threaded / Screwed Flanges

Threaded / Screwed Flanges

For essential pipe-to-pipe connectivity in threaded piping systems, Threaded Flanges from Fortis Forge are recognized for their exceptional strength, easy installation without welding, and superior resistance to pressure and corrosion. These flanges are precision-engineered to meet the highest performance and durability standards as per ASTM A105, ASME B16.5, and applicable DIN specifications. Manufactured using carbon steel or mild steel, our threaded flanges are ideal for low-pressure, non-cyclic applications where welding is not feasible.

With advanced threading, tight dimensional control, and strict quality assurance, Fortis Forge Threaded Flanges ensure leak-free connections and long-term service reliability. Designed to be screwed directly onto a pipe with external threads, these flanges eliminate the need for welding, making them ideal for flammable, hazardous, or high-risk areas where welding is unsafe or impractical.

Commonly used in oil & gas pipelines, chemical plants, pharmaceutical systems, compressed air services, and fuel or water utility lines, threaded flanges provide a safe and efficient way to join piping components. They are especially useful in small-diameter pipe systems or systems requiring frequent dismantling.

Available in multiple sizes, pressure ratings (Class 150, 300, etc.), and face types (RF, FF), our Threaded Flanges deliver strong mechanical hold, corrosion resistance, and a secure seal, all while enabling easy and quick installation in demanding industrial environments.

Threaded Flange, Screwed Flanges, Carbon Steel Threaded Flange Fittings, Mild Steel Screwed Flanges Price List, ASTM A105 Threaded Flange, Forged Steel Threaded Pipe Flanges, CS/MS Screwed Flange Manufacturer, ASME B16.5 Threaded Flange Supplier, Threaded Flange Manufacturers in India

Size
½” to 24” (DN15–DN600)
Standard
ASME B16.5 / BS 4504 / EN 1092-1
Material
Carbon Steel (ASTM A105) / Mild Steel (IS 2062)
Enquiry

What is a Threaded Flange?

A Threaded Flange (also called a screwed flange) is a type of pipe flange with internal threads that match the external threads on a pipe. It allows for secure, leak-resistant connections without welding, making it ideal for systems where welding is impractical or hazardous.

Threaded flanges are widely used in low-pressure, non-critical piping systems and in environments where quick assembly and disassembly are required.

Key Features

No Welding Required – Reduces installation time and avoids heat-related risks.
Reusability – Can be easily dismantled for inspection, maintenance, or replacement.
Leak-Resistant Thread Design – Ensures tight sealing in compatible threaded systems.
Variety of Thread Types – NPT, BSP, BSPT, and other standard thread forms available.

Material Grades We Use

At Fortis Forge, our threaded flanges are made from premium materials to ensure reliability and long service life:

Carbon Steel (ASTM A105)
→ High strength and toughness; suitable for high-temperature and moderate-pressure systems.
Mild Steel (IS 2062)
→ Cost-effective and easy to fabricate for general-purpose applications.
Stainless Steel (304 / 316)
→ Exceptional corrosion resistance, ideal for chemical, marine, and food-grade applications.

Manufacturing Standards at Fortis Forge

Every flange undergoes strict quality control:

CNC machining for precision threading
Heat treatment for enhanced strength
Non-destructive testing (NDT) to detect flaws
Hydrostatic pressure testing for leak integrity
Certification and full material traceability

Applications Across Industries

Threaded flanges from Fortis Forge are used in:

Oil & Gas Pipelines
Chemical Processing Plants
Marine & Shipbuilding
Water Treatment Facilities
Firefighting Systems
Hydraulic & Pneumatic Networks

Their easy installation, reusability, and strong sealing capability make them a preferred choice in many industrial sectors.

Why Choose Fortis Forge?

Use of certified raw materials with MTCs
In-house machining & testing capabilities
Accurate threading and dimensional consistency
On-time delivery worldwide
Technical support and customization options

Threaded Flanges – Class 150/300, Carbon Steel Threaded Flange Fittings, Mild Steel Screwed Flanges, ASTM A105 Threaded Flanges, ASME B16.5 Flanges, High Pressure CS/MS Screwed Flanges, NPT/BSP Threaded Raised Face & Flat Face Flange Manufacturer in India

As a leading manufacturer of Threaded Flanges, Fortis Forge is committed to delivering high-performance flanges that meet strict international quality standards. Our threaded (screwed) flanges are precision-machined and thoroughly inspected to ensure superior dimensional accuracy, tight sealing performance, and long-lasting durability. In India’s highly competitive industrial flange market, we stand out for our engineering excellence, customer focus, and consistent product reliability.

Threaded Flanges are especially suited for low-pressure piping systems where welding is either not possible or not preferred. These flanges are screwed onto the pipe, making them ideal for applications involving flammable or explosive materials, where welding may pose safety risks. Commonly used in oil & gas, chemical plants, water systems, fire protection piping, and utility services, our threaded flanges offer a fast, leak-proof solution for pipe-to-pipe connections.

Manufactured using high-quality carbon steel (ASTM A105) and mild steel (IS 2062), our flanges comply with ASME B16.5, BS 4504, and EN 1092-1 standards. Fortis Forge provides Threaded Flanges in a range of sizes, pressure classes (Class 150, 300), and thread types (NPT, BSP), ensuring compatibility with global piping requirements. Whether you’re managing process piping or building a utility system, we offer dependable threaded flange solutions tailored to your operational needs.

Threaded Flanges, Carbon Steel Threaded Flange Fittings, Mild Steel Screwed Flanges, ASME B16.5 Threaded Flanges, Class 150 & Class 300 Screwed Flanges, Threaded Flange Manufacturers in India

Specifications ASME B16.5 / BS 4504 / EN 1092-1
Size Range ½” to 24” (DN15 to DN600)
Types Threaded/Socket Weld Flange (TH), Screwed Flange, Raised Face (RF), Flat Face (FF)
Pressure Class Class 150, 300, 600
Material Grades Carbon Steel (ASTM A105), Mild Steel (IS 2062)
Standard ASTM, ASME, ANSI, DIN, EN, JIS, BS
Applications Oil & Gas, Fire Protection, Chemical, HVAC, Plumbing, Water Treatment

NPS (in)	Class	Flange O.D.	No. of Bolts	Bolt Size (in)	Bolt Hole Ø	Bolt Circle Ø
½	150	3-1/2″	4	½	0.62	2-3/8
¾	150	3-7/8″	4	½	0.62	2-3/4
1	150	4-1/4″	4	½	0.62	3-1/8
½	300	3-3/4″	4	½	0.62	2-5/8
¾	300	4-5/8″	4	⅝	0.75	3-1/4
1	300	4-7/8″	4	⅝	0.75	3-1/2
½	600	3-3/4″	4	½	0.62	2-5/8
¾	600	4-5/8″	4	⅝	0.75	3-1/4
1	600	4-7/8″	4	⅝	0.75	3-1/2

The Threaded Flange price can vary depending on factors such as size, pressure class (150#, 300#, etc.), face type (RF, FF), material grade, and order quantity. Typically, the price for carbon steel or mild steel threaded flanges ranges from ₹60 to ₹1,100 per piece, based on specifications and standards. As a reliable threaded flange manufacturer and supplier in India, Fortis Forge ensures highly competitive pricing while upholding rigorous quality control, dimensional accuracy, and product consistency. Our flanges are manufactured to deliver secure, leak-free threaded connections in applications where welding is not feasible.

Quality Assurance

To preserve the high standards of our selection of Forged Fittings, Buttweld Fittings, Flanges and we have always adhered to a systematic quality management process.

Team of Experts

Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success.

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
ASTM A105 (Threaded/Socket Weld Flange)	1.0432	K03504	SF 440A	1501-151-430A	20	NF A 36-205	P250GH / S235JR

If you would like to inquire or place an order.
+91 83330 05894

Forged Fittings, Buttweld Fittings and Flanges Manufacturer in India

Manufactured from high-strength carbon steel grades
Available in forged, buttweld, and flange configurations
Precision-machined for leak-proof, high-pressure applications
Heat-treated and normalized to ensure durability and strength
Tested for dimensional accuracy and pressure resistance
Corrosion-resistant coatings available on request