At Dhanlaxmi Stainless, we offer a premium selection of Olet Fittings designed for branch connections in piping systems where reinforcement, flexibility, and pressure integrity are essential. These self-reinforced fittings allow the connection of a smaller diameter outlet pipe to a larger header pipe without compromising system strength or flow characteristics.
Our range includes Weldolet, Threadolet, Sockolet, Nippolet, Latrolet, Elbowlet, and other customized configurations to suit various piping layouts. Each type is engineered for specific welding, threading, or socket weld connections based on pressure class and installation preference.
We manufacture Olet Fittings using superior quality Stainless Steel grades such as ASTM A182 F304, F304L, F316, F316L, 310, 321, 347, and 904L. For higher durability and corrosion resistance in aggressive environments, we also supply Olets in Nickel Alloys including Inconel (600, 625, 825), Incoloy (800, 800HT), Monel 400, Hastelloy C22/C276, and Alloy 20.
Our offerings further include Carbon Steel Olets (ASTM A105, A350 LF2), Low-Temperature Carbon Steel, and Alloy Steel grades like F1, F5, F9, F11, F22, F91. We also supply specialized Olets in Duplex & Super Duplex Steel (UNS S31803, S32750, S32760) for superior performance in chloride-containing environments.
Available in pressure classes up to 6000# and outlet sizes ranging from 1/8” to 24”, our Olet Fittings are manufactured to MSS-SP-97 specifications and are widely used in oil & gas, chemical & petrochemical plants, power generation, shipbuilding, and high-pressure process systems. All fittings can be supplied with Mill Test Certificates (MTCs), NACE MR0175 compliance, and optional Third-Party Inspection as required.
| Element | Material Grade | Available Size Range | Pressure Rating | End Connection Type | Applicable Standards | Optional Grades |
|---|---|---|---|---|---|---|
| Nippolet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 24” (B/W Standard & Extra Long) | 3000#, 6000# | Plain End | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
| Sockolet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 4” (3000#), 1/2” to 2” (6000#) | 3000#, 6000# | Socket Weld (S/W) | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
| Weldolet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 24” | 3000# (for small bore branches) | Butt Weld (B/W) | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
| Elbowlet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 24” | 3000# | Butt Weld (B/W) | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
| Latrolet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 24” | 3000# | Socket Weld / Butt Weld | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
| Threadolet | Stainless Steel: ASTM A182 F304L, 316L, 310, 904L Carbon Steel: ASTM A105 |
1/8” to 4” (Threaded) | 3000#, 6000# | Threaded (NPT/BSPT) | MSS-SP-97 | Duplex, Super Duplex, Inconel, Monel, Hastelloy C, Nickel Alloy, Alloy 20, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), Brass, Pure Copper |
Sockolets are socket weld branch connection fittings used to create 90° outlets from larger header pipes to smaller branch pipes. They are ideal for high-pressure applications where full-strength, leak-free branch connections are required, without the need for pipe cutting or tee welding. Sockolets are widely used in compact piping layouts and are available in pressure ratings of 3000# and 6000#.
Weldolets are the most commonly used branch connection fittings in high-pressure piping systems. Designed to minimize stress concentrations, they provide a smooth, reinforced transition from a larger header pipe to a smaller branch. Weldolets are welded directly to the run pipe, offering exceptional strength and reliability.
Branzolets and Coupolets are branch connection fittings used to create reliable and compact outlets from header pipes, especially where space constraints or specific flow requirements exist. These fittings are commonly used in fire protection systems, low-pressure applications, and utility piping where full-sized tees are not practical.
Branzolets are typically threaded or socket weld type outlets designed for quick connections in general process piping systems. Coupolets are widely used in fire sprinkler installations and allow easy branch connections without extensive cutting or welding.
Threadolet is a threaded branch connection fitting used to create a 90° outlet from a larger pipe without welding. Ideal for low-pressure piping systems, it features a female threaded end (NPT/BSP) and is commonly used for instrument connections and small-bore pipe take-offs. Manufactured as per MSS-SP-97, Threadolets are available in pressure ratings of 3000# and 6000#, in Stainless Steel, Carbon Steel, Duplex, Super Duplex, and high-performance Nickel Alloys.
Elbolet is a specialized branch connection fitting designed to provide a 90° outlet on long radius elbows or header bends, commonly used in instrument tapping or drain applications. It is available with socket weld, threaded, or butt weld ends and is ideal for space-constrained or angled configurations. Manufactured in Stainless Steel, Carbon Steel, Alloy Steel, Duplex, and High Nickel Alloys, Elbolets conform to MSS-SP-97 and are supplied in 3000#, 6000#, and higher pressure ratings as required.
Nippolet is a one-piece branch connection fitting with an integral nipple that extends from the header run pipe, typically used for small-diameter piping outlets. It combines the function of a weldolet and a pipe nipple, making it ideal for vents, drains, and instrument connections. Manufactured in Stainless Steel, Carbon Steel, Alloy Steel, Duplex, and High Nickel Alloys, Nippolets are available in threaded, socket weld, or butt weld ends and pressure classes like 3000# and 6000#, conforming to MSS-SP-97 standards.
Olet fittings provide reliable branch connections for high-pressure, high-temperature, and corrosive piping systems across diverse industrial sectors.
Used in branch connections for pressure vessels, pipelines, and manifold systems in upstream and downstream operations.
Ideal for corrosive fluid handling in reactors, heat exchangers, and process piping systems requiring reinforced branch outlets.
Used in steam piping, boiler systems, and high-pressure lines where compact, high-integrity branch connections are needed.
Preferred in piping systems for ballast, fuel transfer, and cooling systems on ships and offshore platforms due to space efficiency and durability.
Extensively used in refining units and large-scale plant piping networks to minimize stress concentrations at branch connections.
Used in pressure vessels, columns, tanks, and fabricated assemblies requiring compact and reinforced outlets.