ARK Stainless Inc. is a leading Manufacturer and Exporter of high-quality Flanges, located in Mumbai, India. We specialize in manufacturing precision-engineered Flanges using the finest raw materials, rigorously tested and controlled by our skilled professionals to ensure unparalleled performance and durability.
Each of our Flanges is made in strict accordance with both National and International Industrial Standards, ensuring that our customers receive products that are not only reliable but also long-lasting. Our commitment to quality and excellence has made us a trusted supplier to a wide range of industries across the globe.
ARK Stainless Inc. is a trusted manufacturer and exporter of a diverse range of flanges. Crafted from premium-quality raw materials, our flanges undergo stringent quality control and rigorous testing to ensure superior durability and performance. Each flange is manufactured in compliance with national and international industrial standards, guaranteeing reliability across various applications.
We offer flanges in multiple types and grades, including Stainless Steel, Carbon Steel, Duplex Steel, Super Duplex Steel, Alloy Steel, Nickel Alloy, Titanium Alloy, and Cupro-Nickel Alloy. With the expertise of our skilled professionals, we provide high-quality flanges known for their strength, precision, and long-lasting performance.
Our experienced engineers leverage advanced manufacturing techniques and top-grade materials to produce flanges that meet industry standards and customer specifications. At ARK Stainless Inc., we are dedicated to delivering top-tier flanges that cater to the diverse needs of industries worldwide.
| Material Type | Standards | Available Grades | |
|---|---|---|---|
| ASTM | ASME | ||
| Stainless Steel | A182 | A240 | F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L |
| - | - | ||
| Carbon Steel | A105 | A350 | LF2, A516 Gr.70, A36, A694 F42, F46, F52, F60, F65, F70 |
| A181 | - | LF2 | |
| Alloy Steel | A182 | A387 | F1, F5, F9, F11, F12, F22, F91 |
| Duplex Steel | A182 | - | F44, F45, F51, F53, F55, F60, F61 |
| Super Duplex Steel | A182, A240 | - | F44, F45, F51, F53, F55, F60, F61 |
| Nickel Alloy | - | Nickel 200, Nickel 201, Monel 400, Monel 500, Inconel 800, Inconel 825, Inconel 600, Inconel 625, Inconel 601, Hastelloy C 276, Alloy 20, Titanium (Grade I & II) | |
| Copper Alloy | - | UNS No. C10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, C 70600 (Cu-Ni-90/10), C 71500 (Cu-Ni-70/30) | |
| Low Temperature Carbon Steel | A350 | - | LF2, LF3 |
| Flange Type | Size (NPS) | Dimensions (mm) | Number of Bolts | Bolt Hole Diameter (mm) | Standard | |
|---|---|---|---|---|---|---|
| Outer Diameter (OD) | Bolt Circle Diameter (BCD) | |||||
| Welding Neck Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.5, B16.47 |
| Slip-On Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.5, B16.47 |
| Blind Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | BS4504, BS1560 |
| Long Welding Neck | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.5 |
| Lap Joint | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | DIN 2527, DIN 2573 |
| Socket Weld | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | DIN 2527 |
| Threaded | 1/2" - 24" | 90 - 610 | 60.3 - 580 | 4 - 16 | 15 - 54 | ANSI B16.5 |
| Orifice | 1/2" - 24" | 90 - 610 | 60.3 - 580 | 4 - 16 | 15 - 54 | ANSI B16.36 |
| Spectacle Blind | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.48 |
| Spacer and Blank | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | MSS SP44 |
| Ring Joint Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.5 |
| Swivel | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | API 6A |
| Weld Outlet | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.9 |
| Socket Outlet | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI B16.11 |
| Flange Outlet | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | MSS SP-97 |
| Square Flange | 1/2" - 24" | 90 - 610 | 60.3 - 580 | 4 - 16 | 15 - 54 | JIS B2291 |
| Girth Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | Custom Fabrication |
| Channel Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | Custom Fabrication |
| API Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | API 6A, API 17D |
| Taylor Flange | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | Custom Specification |
| Forged Ring | 1/2" - 48" | 90 - 1200 | 60.3 - 1130 | 4 - 20 | 15 - 64 | ANSI, ASTM A182 |
Flanges are crucial components in various industries due to their ability to connect pipes, valves, pumps, and other equipment efficiently while ensuring secure and leak-proof connections. Some of the key applications include:
Used in pipeline connections, refineries, and offshore drilling platforms for secure fluid transfer.
Essential in high-temperature and high-pressure environments for chemical processing.
Widely used in thermal, nuclear, and hydroelectric plants for steam and fluid transmission systems.
Used in desalination and purification plants to ensure secure and corrosion-resistant connections.
Enables leak-proof and contamination-free connections in fluid handling systems.
Stainless steel flanges are preferred for their hygienic and corrosion-resistant properties in food processing.
Used in seawater pipelines, ballast systems, and offshore drilling platforms for secure piping.
Essential for plumbing systems, water supply networks, and structural piping in buildings and infrastructure projects.
The manufacturing process of flanges involves precise engineering to ensure durability, strength, and compliance with industry standards. The process includes raw material preparation, forging, machining, drilling, heat treatment, and quality testing.
High-quality raw materials (carbon steel, stainless steel, alloy steel) are cut using Band Saw Machines ranging from 25 mm to 1150 mm to match the required flange size.
The material undergoes cold forging, impression die forging, open die forging, or seamless rolled ring forging, depending on the flange type and application.
CNC machining and precision tools are used to shape different flange types, such as blind flanges, lens rings, full-face flanges, flange plus connections, raised face flanges, and ring groove flanges.
Hole drilling is performed using VMC, radial drill, or column drill machines, ensuring precise bolt hole alignment and dimensions.
Flanges undergo annealing solution treatment to improve mechanical properties, reduce stress, and enhance corrosion resistance.
Surface treatments such as pickling & passivation (for stainless steel) or galvanization & epoxy coating (for carbon steel) are applied for enhanced corrosion resistance.
Non-destructive testing (NDT), ultrasonic testing (UT), hydrostatic testing, and PMI are conducted to ensure dimensional accuracy, strength, and compliance with standards.
Flanges are securely packed, labeled with material specifications, and dispatched with proper handling to ensure safe delivery to customers worldwide.
A Weld Neck Flange (WNRF) is designed with a long tapered hub that provides reinforcement, making it ideal for high-pressure and high-temperature applications. The smooth transition from the flange to the pipe ensures reduced stress concentration and better flow efficiency. These flanges are commonly used in industries such as oil & gas, chemical processing, and power plants.
A Slip-On Flange (SORF) is designed to slide over the pipe and then be welded on both the inside and outside for a secure connection. It is cost-effective, easy to install, and widely used in low-pressure applications where leakage prevention is not the primary concern. These flanges are commonly used in water supply systems, gas pipelines, and structural applications.
A Threaded Flange (THRF) is designed with internal threads that allow it to be screwed onto a pipe without the need for welding. It is widely used in low-pressure applications and where welding is not feasible due to explosive or hazardous environments. These flanges are commonly used in small-diameter piping systems, fuel lines, and water distribution networks.
A Socket Weld Flange (SWRF) is designed for small-diameter, high-pressure piping systems. It features a socket in which the pipe is inserted and fillet-welded around the outside for secure attachment. These flanges are commonly used in chemical processing, high-pressure steam lines, and hydraulic systems due to their strong and leak-proof connection.
A Lap Joint Flange (LJRF) is a two-piece flange assembly consisting of a stub end and a backing flange. It is commonly used in systems requiring frequent dismantling for inspection and maintenance. These flanges allow easy alignment and rotation, making them ideal for low-pressure, non-critical applications such as water pipelines, chemical processing, and shipbuilding.
A Blind Flange (BLRF) is a solid disk used to close the end of a piping system. It is designed to provide a positive seal for piping systems or vessels under high pressure. These flanges allow easy access to the pipeline for inspection, modification, or expansion without permanently welding the pipe. Blind flanges are commonly used in oil and gas, petrochemical, water treatment, and power generation industries.
A Long Welding Neck Flange (LWNRF) is a specialized flange designed for high-pressure and high-temperature applications. Unlike standard welding neck flanges, the neck of an LWNRF is extended, making it ideal for use in pressure vessel applications and critical piping systems. It helps in reducing stress and ensures a smooth transition of fluid flow within the system. Long welding neck flanges are widely used in industries such as oil and gas, petrochemical, power plants, and marine engineering.
An Orifice Flange is designed specifically for measuring fluid flow within a pipeline. It includes tapped holes to accommodate orifice plates, which help in determining the rate of flow of liquids and gases. These flanges are used in conjunction with pressure taps to measure differential pressure and are widely utilized in industries requiring precise flow control such as oil & gas, chemical processing, and power generation.
A Spectacle Blind Flange is a safety device used to completely isolate or partially restrict flow in a pipeline. It consists of a solid plate and an open ring (spacer) connected by a metal strip, allowing operators to switch between open and closed positions without removing the flange. These flanges are commonly used in high-pressure systems for maintenance, inspection, and emergency shutdowns in industries such as oil & gas, petrochemical, and power plants.
A Spacer and Blank Flange assembly is used to control and regulate the flow in a piping system. The Spacer is an open ring that allows normal flow, while the Blank is a solid plate that completely stops the flow. These components are designed for easy interchangeability, making them ideal for maintenance, isolation, and system modifications. They are widely used in industries such as oil & gas, petrochemical, chemical processing, and power generation.
A Ring Joint Flange (RTJ Flange) is designed for high-pressure and high-temperature applications, ensuring a leak-proof metal-to-metal seal. It features a precision-machined groove in the flange face where a metal ring gasket is inserted to create a tight seal when bolted together. This type of flange is commonly used in critical industries such as oil & gas, petrochemical, and power plants where reliable sealing under extreme conditions is required.
A Swivel Flange is a two-piece assembly designed for easy alignment of bolt holes during flange connection. It consists of a rotating outer ring and an inner hub, allowing for flexibility in installation, especially in subsea and offshore applications. These flanges are widely used in industries such as oil & gas, petrochemical, and pipeline systems where precise positioning is critical.
A Weld Outlet Flange (also known as a Weldoflange) is a combination of a welding outlet and a flange, designed to create a reinforced and leak-proof branch connection in piping systems. It is welded directly to the main pipeline, providing a high-strength connection for high-pressure and high-temperature applications. These flanges are commonly used in industries such as oil & gas, petrochemical, power generation, and chemical processing.
A Socket Outlet Flange (also known as a Socko Flange) is designed to create a secure branch connection in piping systems by utilizing a socket-weld design. It allows for smooth fluid flow with minimal pressure drop, making it suitable for small-diameter, high-pressure applications. These flanges are widely used in industries such as oil & gas, petrochemical, power generation, and chemical processing for leak-proof and durable connections.
A Flange Outlet is a specialized fitting designed to provide a reinforced branch connection in piping systems. It is typically used to create an outlet from a larger main pipe while maintaining high strength and leak-proof performance. Flange outlets are widely used in industries such as oil & gas, petrochemical, power generation, and chemical processing for high-pressure and high-temperature applications.
A Square Flange is a specialized type of flange with a square shape, designed primarily for hydraulic and high-pressure piping systems. It provides a secure and leak-proof connection between pipes, ensuring efficient fluid transmission. These flanges are commonly used in industries such as marine, construction, and hydraulic machinery where space constraints and high-pressure performance are critical.
A Girth Flange is a type of flange used to connect two sections of large-diameter vessels or tanks. It provides structural integrity while allowing for easy assembly and disassembly during maintenance or transportation. These flanges are commonly used in industries such as oil & gas, petrochemical, power generation, and water treatment, where large cylindrical structures require secure and leak-proof joints.
A Channel Flange is a specialized type of flange designed for applications where a secure, leak-proof connection is required along a structural or fluid channel. It provides excellent alignment and strength, making it suitable for pipelines, pressure vessels, and heat exchangers. These flanges are commonly used in industries such as oil & gas, chemical processing, and marine applications.
An API Flange is a high-strength flange designed to meet the stringent specifications of the American Petroleum Institute (API) standards. These flanges are widely used in high-pressure and high-temperature applications in the oil & gas, petrochemical, and drilling industries. API flanges ensure reliable, leak-proof connections in critical environments such as pipelines, wellheads, and offshore platforms.
A Taylor Flange is a specialized type of flange designed for enhanced sealing and pressure containment in industrial piping systems. It is engineered with a unique design that allows for secure connections in applications requiring high strength and reliability. Taylor flanges are commonly used in industries such as oil & gas, chemical processing, and power generation.
