ARK Stainless Inc. is a leading Manufacturer and Exporter of high-quality Olet Fittings located in Mumbai, India. We specialize in manufacturing Olet Fittings using the finest raw materials, rigorously tested and controlled by our skilled professionals to ensure exceptional strength, reliability, and durability.
Each of our Olet Fittings is produced in strict compliance with National and International Industrial Standards, guaranteeing precision, performance, and longevity. Our unwavering commitment to quality and excellence has established us as a trusted supplier for industries worldwide.
| Material | Standard | Available Grades | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ||
| Stainless Steel | ASTM A182 / ASME SA182 | 304 | 304L | 316 | 316L | 321 | 347 | 310 | 904L |
| Duplex & Super Duplex | ASTM A815 / ASME SA815 | Duplex 2205 | Duplex 2304 | Super Duplex 2507 | |||||
| Alloy Steel | ASTM A182 / ASME SA182 | F1 | F5 | F9 | F11 | F12 | F22 | F91 | |
| Carbon Steel | ASTM A105 / ASME SA105 | WPB | WPHY 42 | WPHY 46 | WPHY 52 | WPHY 56 | WPHY 60 | WPHY 65 | WPHY 70 |
| Nickel Alloy | ASTM B564 / ASME SB564 | Inconel 600 | Inconel 625 | Inconel 718 | Incoloy 800 | Incoloy 825 | Monel 400 | Hastelloy C22 | Hastelloy C276 |
| Stainless Steel | ASTM A182 / ASME SA182 | 304 | 304L | 316 | 316L | 321 | 347 | 310 | 904L |
| Carbon Steel | ASTM A105 / ASME SA105 | WPB | WPHY 42 | WPHY 46 | WPHY 52 | WPHY 56 | WPHY 60 | WPHY 65 | WPHY 70 |
| Stainless Steel | ASTM A182 / ASME SA182 | 304 | 304L | 316 | 316L | 321 | 347 | 310 | 904L |
| Duplex Steel | ASTM A815 / ASME SA815 | Duplex 2205 | Duplex 2304 | Super Duplex 2507 | |||||
| Alloy Steel | ASTM A182 / ASME SA182 | F1 | F5 | F9 | F11 | F12 | F22 | F91 | |
| Copper Nickel | ASTM B466 / ASME SB466 | Cu-Ni 70/30 | Cu-Ni 90/10 | ||||||
| Type | Grades | Size Range (NPS) | Pressure Class | Material Composition | |||
|---|---|---|---|---|---|---|---|
| Chemical Composition | Mechanical Strength | Corrosion Resistance | Temperature Range | ||||
| Weldolet | ASTM A182 F304/F316 | 1/2” - 24” | 3000#, 6000#, 9000# | Cr: 18-20%, Ni: 8-10.5% | Tensile Strength: 515 MPa | Excellent | -50°C to 870°C |
| ASTM A105 (Carbon Steel) | 1/2” - 24” | 3000#, 6000#, 9000# | C: ≤0.35%, Mn: 0.60-1.05% | Tensile Strength: 485 MPa | Moderate | -29°C to 425°C | |
| Sockolet | ASTM A182 F316/F317 | 1/2” - 6” | 3000#, 6000# | Cr: 18-22%, Mo: 2-3% | Tensile Strength: 515 MPa | High | -50°C to 870°C |
| ASTM A350 LF2 (Low Temp CS) | 1/2” - 6” | 3000#, 6000# | C: ≤0.30%, Mn: 0.60-1.35% | Tensile Strength: 485 MPa | Good | -46°C to 345°C | |
| Threadolet | ASTM A182 F321/F347 | 1/2” - 4” | 3000#, 6000# | Cr: 17-19%, Ni: 9-13% | Tensile Strength: 515 MPa | Excellent | -50°C to 870°C |
| Latrolet | ASTM A182 F51 (Duplex Steel) | 1/2” - 4” | 3000#, 6000# | Cr: 21-23%, Ni: 4.5-6.5% | Tensile Strength: 620 MPa | High | -50°C to 600°C |
| ASTM A182 F55 (Super Duplex) | 1/2” - 4” | 3000#, 6000# | Cr: 24-26%, Mo: 3-4.5% | Tensile Strength: 795 MPa | Superior | -50°C to 600°C | |
| Elbolet | ASTM B564 UNS N06625 (Inconel 625) | 1/2” - 4” | 3000#, 6000# | Cr: 20-23%, Ni: 58% | Tensile Strength: 760 MPa | Excellent | -196°C to 980°C |
| Olet Type | Size (Inch) | Run Pipe Size (Inch) | Outlet Size (Inch) | Wall Thickness | Material Grade | Standard |
|---|---|---|---|---|---|---|
| Weldolet | 1/2" | 2" - 6" | 1/2" | SCH 40 | ASTM A105 / A182 F304 / F316 | ASME B16.11 |
| 3/4" | 3" - 8" | 3/4" | SCH 40 | |||
| 1" | 4" - 10" | 1" | SCH 40 | |||
| Sockolet | 1/2" | 2" - 6" | 1/2" | SCH 80 | ASTM A350 LF2 / A182 F304 / F316 | ASME B16.11 |
| 3/4" | 3" - 8" | 3/4" | SCH 80 | |||
| 1" | 4" - 10" | 1" | SCH 80 | |||
| Threadolet | 1/2" | 2" - 6" | 1/2" | SCH 160 | ASTM A105 / A182 F316 | ASME B16.11 |
| 3/4" | 3" - 8" | 3/4" | SCH 160 | |||
| 1" | 4" - 10" | 1" | SCH 160 | |||
| Latrolet | 1/2" | 2" - 6" | 1/2" | SCH 40 | ASTM A182 F304 / F316 | ASME B16.11 |
| 3/4" | 3" - 8" | 3/4" | SCH 40 | |||
| 1" | 4" - 10" | 1" | SCH 40 |
Olet fittings play a crucial role in various industries, offering reliable branch connections in piping systems. They are designed to handle high-pressure and high-temperature applications, ensuring leak-proof and durable connections.
Widely used in pipelines for transporting crude oil, natural gas, and petrochemical products under extreme conditions.
Essential for handling corrosive chemicals, hydrocarbons, and refined products in complex piping networks.
Applied in thermal, nuclear, and renewable energy plants for high-pressure steam, cooling, and fuel transport.
Used in seawater desalination, filtration, and purification systems for corrosion-resistant piping solutions.
Ideal for transporting acids, alkalis, and other chemical solutions safely through industrial plants.
Used in seawater pipelines, ballast systems, and offshore oil drilling platforms to withstand harsh marine environments.
Integral to fire suppression systems and heating/cooling infrastructure in commercial and industrial buildings.
Used in fuel and hydraulic systems where precision-engineered, high-strength fittings are required.
The manufacturing of olet fittings involves precision engineering and high-quality raw materials to ensure strength, durability, and leak-proof connections. The process includes material selection, forging, machining, heat treatment, and rigorous testing to meet international standards.
Premium-grade stainless steel, carbon steel, duplex steel, and alloy steel billets are chosen to match industry specifications and ensure high performance in pressure applications.
The selected raw material is heated to high temperatures and forged into the desired olet fitting shape using advanced forging and forming techniques.
CNC machining is used to ensure precise dimensions, smooth surfaces, and accurate threading, which are crucial for a perfect fit in pipeline systems.
The fittings undergo heat treatment processes such as annealing, normalizing, or quenching to enhance mechanical strength and corrosion resistance.
Depending on the application, fittings undergo processes like pickling, passivation, galvanization, or epoxy coating to enhance durability and corrosion resistance.
Each olet fitting undergoes rigorous non-destructive testing (NDT), ultrasonic testing (UT), hydrostatic pressure tests, and spectro analysis to verify material composition and structural integrity.
Fittings are marked with size, material grade, pressure class, and manufacturing details before a final inspection is conducted to ensure compliance with industry standards.
To ensure safe transportation, olet fittings are securely packed in wooden cases, bubble wrap, or customized protective packaging as per customer requirements.
A Sockolet is a type of branch connection fitting used in high-pressure piping systems. It is designed with a socket-weld connection, ensuring a strong, leak-proof joint. Sockolets are commonly used in industries such as oil & gas, petrochemicals, and power plants where robust, high-strength connections are required. They are available in different pressure ratings such as 3000# and 6000#, making them suitable for various applications.
| Nominal Pipe Size (NPS) | Socket Bore Diameter (D) | Socket Depth (T) | Outside Diameter (OD) | Pressure Rating |
|---|---|---|---|---|
| 1/2" | 15 mm | 10 mm | 25 mm | 3000# / 6000# |
| 3/4" | 20 mm | 13 mm | 30 mm | 3000# / 6000# |
| 1" | 25 mm | 16 mm | 38 mm | 3000# / 6000# |
| 1 1/2" | 40 mm | 22 mm | 57 mm | 3000# / 6000# |
| 2" | 50 mm | 25 mm | 76 mm | 3000# / 6000# |
A Weldolet is a type of branch connection fitting used in piping systems to create a 90-degree branch from the main run. It is designed to minimize stress concentration and provide a smooth transition between the run pipe and the branch pipe. Weldolets are widely used in high-pressure and high-temperature applications, such as in oil & gas, chemical processing, and power plants.
| Branch Size (NPS) | Run Pipe Size (NPS) | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness (SCH 40) |
|---|---|---|---|---|
| 1/2" | 2" and Larger | 21.3 mm | 15.7 mm | 2.77 mm |
| 3/4" | 2" and Larger | 26.7 mm | 20.9 mm | 2.87 mm |
| 1" | 2 1/2" and Larger | 33.4 mm | 26.6 mm | 3.38 mm |
| 1 1/2" | 3" and Larger | 48.3 mm | 40.9 mm | 3.68 mm |
| 2" | 3 1/2" and Larger | 60.3 mm | 52.5 mm | 3.91 mm |
| 3" | 5" and Larger | 88.9 mm | 77.9 mm | 5.49 mm |
| 4" | 6" and Larger | 114.3 mm | 102.3 mm | 6.02 mm |
| 6" | 8" and Larger | 168.3 mm | 152.3 mm | 7.11 mm |
| 8" | 10" and Larger | 219.1 mm | 203.9 mm | 8.18 mm |
Branzolet and Coupolet are branch fittings used in piping systems for creating reliable and leak-proof connections. These fittings reinforce and strengthen branch connections, making them ideal for high-pressure and high-temperature applications. Branzolet is primarily used in firefighting, heating, and cooling systems, while Coupolet is commonly used for small-diameter piping, such as instrumentation and hydraulic systems.
| Size (NPS) | Outlet Diameter (OD) | Wall Thickness | Connection Type | Material |
|---|---|---|---|---|
| 1/2" | 21.3 mm | 2.77 mm | Threaded / Socket Weld | Stainless Steel, Carbon Steel |
| 3/4" | 26.7 mm | 2.87 mm | Threaded / Socket Weld | Alloy Steel, Duplex Steel |
| 1" | 33.4 mm | 3.38 mm | Threaded / Socket Weld | Stainless Steel, Carbon Steel |
| 1 1/4" | 42.2 mm | 3.56 mm | Threaded / Socket Weld | Alloy Steel, Duplex Steel |
| 1 1/2" | 48.3 mm | 3.68 mm | Threaded / Socket Weld | Stainless Steel, Carbon Steel |
| 2" | 60.3 mm | 3.91 mm | Threaded / Socket Weld | Alloy Steel, Duplex Steel |
| 3" | 88.9 mm | 5.49 mm | Threaded / Socket Weld | Stainless Steel, Carbon Steel |
| 4" | 114.3 mm | 6.02 mm | Threaded / Socket Weld | Alloy Steel, Duplex Steel |
A Threadolet is a branch connection fitting designed for low-pressure applications where a threaded joint is preferred. It provides a 90-degree branch connection to the main pipeline, ensuring a secure and leak-proof attachment without the need for welding. Threadolets are widely used in small-diameter branch connections in piping systems across industries such as oil & gas, chemical, and power plants.
| Branch Size (NPS) | Thread Type | Height (H) | End Connection |
|---|---|---|---|
| 1/2" | NPT | 25 mm | Threaded |
| 3/4" | NPT | 30 mm | Threaded |
| 1" | NPT | 38 mm | Threaded |
| 1 1/2" | NPT | 45 mm | Threaded |
| 2" | NPT | 52 mm | Threaded |
Elbolet is a branch connection fitting designed specifically for 90-degree long-radius elbows. It provides a secure and leak-proof connection, making it ideal for high-pressure and high-temperature applications in industries like petrochemical, power generation, and oil & gas. Elbolets are available in socket weld, threaded, and butt-weld configurations, ensuring versatility in piping systems.
| Nominal Pipe Size (NPS) | Branch OD | End Connection Type | Wall Thickness (SCH 40) | Applicable Standard |
|---|---|---|---|---|
| 1/2" | 21.3 mm | Threaded, Socket Weld, Butt-Weld | 2.77 mm | MSS-SP 97 |
| 3/4" | 26.7 mm | Threaded, Socket Weld, Butt-Weld | 2.87 mm | MSS-SP 97 |
| 1" | 33.4 mm | Threaded, Socket Weld, Butt-Weld | 3.38 mm | MSS-SP 97 |
| 1 1/2" | 48.3 mm | Threaded, Socket Weld, Butt-Weld | 3.68 mm | MSS-SP 97 |
| 2" | 60.3 mm | Threaded, Socket Weld, Butt-Weld | 3.91 mm | MSS-SP 97 |
| 3" | 88.9 mm | Threaded, Socket Weld, Butt-Weld | 5.49 mm | MSS-SP 97 |
| 4" | 114.3 mm | Threaded, Socket Weld, Butt-Weld | 6.02 mm | MSS-SP 97 |
A Nippolet is a one-piece fitting designed for branch connections in piping systems. It is essentially a combination of a nipple and an olet, making it suitable for high-pressure and high-temperature applications. Nippolets are widely used in industries like oil & gas, petrochemical, and power plants.
These fittings are available in various materials such as stainless steel, carbon steel, and alloy steel, ensuring compatibility with different piping requirements. Nippolets are primarily used for smaller diameter branches where compactness and strength are essential.
| Nominal Pipe Size (NPS) | Outlet Size | Overall Length | Wall Thickness | Pressure Class |
|---|---|---|---|---|
| 1/2" | 1/4" | 38 mm | 3.2 mm | 3000# |
| 3/4" | 1/2" | 44 mm | 3.9 mm | 3000# |
| 1" | 3/4" | 51 mm | 4.6 mm | 3000# |
| 1 1/2" | 1" | 64 mm | 5.7 mm | 3000# |
| 2" | 1 1/2" | 76 mm | 6.4 mm | 3000# |
| 3" | 2" | 89 mm | 7.9 mm | 3000# |
