ASTM / ASME / ANSI Certified

Alloy Steel Flanges Manufacturers in India

Unicorn Metal Industries is a leading Alloy Steel Flanges Manufacturers in India, offering high-strength flange solutions designed for high-pressure, high-temperature, and critical industrial applications. Alloy Steel Flanges are widely used in industries where enhanced mechanical properties, durability, and resistance to extreme operating conditions are required.

Our product range includes slip-on, weld neck, blind, socket weld, and threaded Alloy Steel Flanges manufactured in accordance with ASTM, ASME, ANSI, and other international standards. These Alloy Steel Flanges are part of our comprehensive industrial flanges manufacturers range and are extensively used in oil & gas, petrochemical, power generation, and heavy engineering industries. With advanced production capabilities, we manufacture both standard and custom Alloy Steel Flanges tailored to meet project-specific requirements.

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15–600 NBSize Range

150#–2500#Pressure Rating

F11 / F22 / F91Core Grades

Alloy Steel Flanges Manufacturers in India

Overview

Alloy Steel Flanges Overview

Alloy Steel Flanges are essential piping components used to connect pipes, valves, and equipment in high-performance industrial systems. Known for their superior strength and heat resistance, Alloy Steel Flanges ensure secure and leak-proof connections even in extreme operating conditions.

One of the key advantages of Alloy Steel Flanges is their ability to withstand high pressure, elevated temperatures, and mechanical stress without compromising performance. These Alloy Steel Flanges are available in various pressure ratings and configurations, making them suitable for demanding applications. At Unicorn Metal Industries, Alloy Steel Flanges are manufactured using precision forging and machining processes to ensure dimensional accuracy and consistent quality, similar to high-performance solutions such as Inconel flanges and Duplex Steel flanges used in critical environments.

Datasheet

Alloy Steel Flanges Specifications

Full mill-standard specifications, material grades, chemical composition, and mechanical properties for our Alloy Steel Flanges range.

Alloy Steel Flanges — Specifications

SHEET 01

Specification	Details
Product	Alloy Steel Flanges
Size Range	15 NB to 600 NB
Pressure Rating	150# to 2500#
Standards	ASTM / ASME / ANSI / DIN
Form	Slip-On, Weld Neck, Blind, Socket Weld, Threaded
Finish	Machined / Black

Alloy Steel Flanges Material Grades

SHEET 02

Grade	Standard	Application
F11	ASTM A182	High temp piping
F22	ASTM A182	Power plants
F91	ASTM A182	Extreme temp

Chemical Composition

SHEET 03

Element	Range
Chromium	1–9%
Molybdenum	0.5–1%
Carbon	≤0.25%
Manganese	≤1%

Mechanical Properties

SHEET 04

Property	Value	Unit
Tensile Strength	415–655	MPa
Yield Strength	≥205	MPa
Hardness	130–220	HB
Elongation	≥20	%

Product Types

Types of Alloy Steel Flanges We Manufacture

We manufacture a comprehensive range of Alloy Steel Flanges designed for high strength, durability, and reliable performance in demanding industrial applications.

TYPE / 01

Slip-On Alloy Steel Flanges

Designed for easy installation, these flanges are widely used in low to moderate pressure systems where alignment flexibility is required.

TYPE / 02

Weld Neck Alloy Steel Flanges

Engineered for high-pressure and high-temperature applications, these flanges provide excellent strength due to their tapered hub and welded connection.

TYPE / 03

Blind Alloy Steel Flanges

Used to seal pipe ends and isolate sections of piping systems, ensuring leak-proof closure and safe operation.

TYPE / 04

Socket Weld Alloy Steel Flanges

Suitable for small-diameter pipelines, these flanges offer strong connections in high-pressure environments.

TYPE / 05

Threaded Alloy Steel Flanges

Designed for applications where welding is not possible, providing secure threaded connections.

TYPE / 06

Lap Joint Alloy Steel Flanges

Ideal for systems requiring frequent dismantling, offering flexibility and easy alignment.

TYPE / 07

Reducing Alloy Steel Flanges

Used to connect pipes of different sizes, ensuring smooth flow transitions in piping systems.

TYPE / 08

Custom Alloy Steel Flanges

Manufactured based on engineering drawings and specifications to meet specialized industrial requirements.

Where They're Used

Applications of Alloy Steel Flanges

Alloy Steel Flanges are widely used in industries where high strength and resistance to extreme conditions are required. In oil & gas and petrochemical industries, Alloy Steel Flanges are used in pipelines and pressure systems operating under high temperature and pressure.

They are also extensively used in power plants, refineries, and heavy engineering industries. Alloy Steel Flanges provide reliable performance in applications involving thermal stress and harsh environments.

Our Commitment

Why Choose Our Alloy Steel Flanges

Selecting the right manufacturer is essential when sourcing Alloy Steel Flanges for critical applications. Unicorn Metal Industries ensures that Alloy Steel Flanges meet strict engineering and quality standards.

Manufacturing focused on precision, traceability, and consistent quality
Custom Alloy Steel Flanges based on project requirements
Reliable performance and timely delivery on every order

Quality Assurance

At Unicorn Metal Industries, strict quality control procedures are followed to ensure the reliability of Alloy Steel Flanges.

Raw Material Verification

The process begins with raw material verification to confirm grade and composition before production starts.

Dimensional Inspection

Followed by dimensional inspection and in-process quality checks during manufacturing.

Mechanical Testing

Mechanical testing is conducted to confirm strength and performance against specification.

Final Inspection

Each flange undergoes final inspection before dispatch, ensuring compliance with international standards and consistent quality for industrial applications.

Full Catalogue

Our Flanges Product Range

Explore our complete portfolio of industrial flanges manufactured for strength, corrosion resistance, and long-term performance.

Stainless Steel Flanges Carbon Steel Flanges Alloy Steel Flanges Duplex Steel Flanges Inconel Flanges Incoloy Flanges Hastelloy Flanges Monel Flanges Nickel Alloy Flanges Titanium Flanges

FAQ

Frequently Asked Questions

What are Alloy Steel Flanges used for?

Alloy Steel Flanges are used to connect pipes, valves, and equipment in high-pressure and high-temperature systems. They are widely used in oil & gas, power plants, and petrochemical industries.

Which grades are used in Alloy Steel Flanges?

Common grades include F11, F22, and F91. These grades provide excellent strength, heat resistance, and durability for demanding applications.

What is the difference between Alloy Steel and Carbon Steel flanges?

Alloy Steel Flanges offer better heat resistance and strength, while Carbon Steel flanges are more cost-effective for general applications.

Do you manufacture custom Alloy Steel Flanges?

Yes, custom Alloy Steel Flanges can be manufactured based on drawings, dimensions, and application requirements.

Which industries use Alloy Steel Flanges?

They are widely used in oil & gas, petrochemical, power generation, and heavy engineering industries.

How do I select the right Alloy Steel Flanges?

Selection depends on pressure, temperature, and application conditions. Expert consultation ensures correct grade and type selection.