Threaded Flexolet

Threaded Flexolet fittings are specially designed branch outlet fittings that provide excellent leak-proof performance under high-pressure conditions. These fittings are ideal for connecting small-diameter branch lines to larger run pipes and are used widely across oil, gas, petrochemical, and power industries. Their threaded design allows for fast and secure installation without the need for welding.

Manufactured in sizes ranging from 1/8” NB to 4” NB, Threaded Flexolets are available in pressure ratings of Class 1500#, 3000#, 6000#, and 9000#. These fittings comply with international standards such as ASME B16.11, MSS-SP-97, MSS-SP-79, and BS 3799. They are precision-machined using high-quality forging techniques and undergo strict heat treatment and threading processes.

These fittings are available in a wide array of materials including stainless steel, duplex steel, super duplex, nickel alloys, Hastelloy, Monel, Inconel, and carbon steel. This broad material range makes Threaded Flexolets suitable for use in corrosive and high-temperature environments where performance and durability are critical.

Threaded Flexolets are manufactured in equal shapes and come in various schedules such as Sch.10s, Sch.40s, Sch.80, Sch.160, Sch.XS, and Sch.XXS. They are offered in different types like forged olets, butt welding olets, and socket weld olets—ensuring compatibility with a variety of piping systems and customer requirements.

Each fitting is made using high-precision CNC machinery, ensuring perfect dimensions, smooth surface finishes, and accurate thread alignment. The fittings are available with NPT threads and are tested for pressure, leakage, and dimensional accuracy to meet global industry expectations.

Key Advantages of Threaded Flexolet Fittings

No Welding Needed – Easy NPT/BSP threaded installation.
High Pressure Support – Rated for 3000#, 6000#, 9000#.
Standard Approved – ASME, ASTM, MSS compliant.
Corrosion-Resistant – Performs in harsh environments.
Accurate Fit – Precision-machined threads.
Worldwide Delivery – Supplied across global industries.

Our Coupolet Outlet fittings to Conforms to NACE MR0175/ISO 15156.

Coupolet Weight Chart

ANSI B366 Coupolet Fittings Specification:-

ANSI B366 Threaded Flexolet Fittings – Specifications

Size Range:

1/8″ NB to 24″ NB
Available in both Socket Weld & Threaded Ends

Pressure Classes:

1500#, 3000#, 6000#, 9000#

Applicable Standards:

ASTM / ASME: SB366, SB363, SB61, SB62, SB151, SB152, SB564, SB160, SB472
ASME: A815, A182, A105, A350, A694

Dimensional Specifications:

ASME/ANSI B16.11
MSS-SP-97, MSS-SP-79
JIS B2316, BS 3799 and other international standards

Manufacturing Process:

Free Forging
Plate Cutting
Forging
Threading
Heat Treatment

Connection Details:

Outlet Size: 1/8″ to 8″
Run Pipe Size: 1/8″ to 60″

Shape:

Equal Shape Threaded Flexolet

Pipe Schedules Supported:

Sch. 10s, Sch. 40s, Sch. 80, Sch. STD, Sch. XS, Sch. 160, Sch. XXS
Custom schedules available on client request

Available Types:

Forged Olets
Socket Weld Olets
Butt Weld Olets
Threaded Olets

Product Forms:

Weldolet, Sockolet, Threadolet, Letrolet, Insert Weldolet
Elbolet, Nipolet, Sweepolet, Brazolet, Coupolet, Nippo Flange, Flangeolet

Flexolet Variants:

Threaded Flexolet
Socketweld Flexolet
Butt Weld Flexolet

1. Material test certificate: As per EN 10204 3.1 OR EN 10204 3.2

2. Material Standerd: Material As Per International Standerd ASTM with An ISO 15156.

3. Packing: Nylon Bags, Plastic, Wooden Box with Fumigation Certificates.

4. Back up documents such as:

♦ Raw Material Test Certificate	♦ Material IGC (Intergranular Corrosion) Test	♦ Material Dimension Chart
♦ Material Heat Treatment Chart	♦ PMI Report (Positive Material Identification)	♦ Material More Chemical Analysis Report
♦ NBL Government App. Lab Test Reports	♦ Quality Assurance Plan (QAP)	♦ Material Hardness Testing Report
♦ Material Mechanical Properties	♦ Material Chemical Report	♦ Material Pressure Capacity Certificate
♦ 100% Radiography Test Report	♦ Flattening Test / Flaring Test	♦ Third Party Inspection Report

♦ Raw Material Test Certificate	♦ Material IGC (Intergranular Corrosion) Test	♦ Material Dimension Chart
♦ Material Heat Treatment Chart	♦ PMI Report (Positive Material Identification)	♦ Material More Chemical Analysis Report
♦ NBL Government App. Lab Test Reports	♦ Quality Assurance Plan (QAP)	♦ Material Hardness Testing Report
♦ Material Mechanical Properties	♦ Material Chemical Report	♦ Material Pressure Capacity Certificate
♦ 100% Radiography Test Report	♦ Flattening Test / Flaring Test	♦ Third Party Inspection Report

Coupolet Weight Chart

ANSI B366 Coupolet Fittings Specification:-

ANSI B366 Threaded Flexolet Fittings – Specifications

Size Range:

1/8″ NB to 24″ NB
Available in both Socket Weld & Threaded Ends

Pressure Classes:

1500#, 3000#, 6000#, 9000#

Applicable Standards:

ASTM / ASME: SB366, SB363, SB61, SB62, SB151, SB152, SB564, SB160, SB472
ASME: A815, A182, A105, A350, A694

Dimensional Specifications:

ASME/ANSI B16.11
MSS-SP-97, MSS-SP-79
JIS B2316, BS 3799 and other international standards

Manufacturing Process:

Free Forging
Plate Cutting
Forging
Threading
Heat Treatment

Connection Details:

Outlet Size: 1/8″ to 8″
Run Pipe Size: 1/8″ to 60″

Shape:

Equal Shape Threaded Flexolet

Pipe Schedules Supported:

Sch. 10s, Sch. 40s, Sch. 80, Sch. STD, Sch. XS, Sch. 160, Sch. XXS
Custom schedules available on client request

Available Types:

Forged Olets
Socket Weld Olets
Butt Weld Olets
Threaded Olets

Product Forms:

Weldolet, Sockolet, Threadolet, Letrolet, Insert Weldolet
Elbolet, Nipolet, Sweepolet, Brazolet, Coupolet, Nippo Flange, Flangeolet

Flexolet Variants:

Threaded Flexolet
Socketweld Flexolet
Butt Weld Flexolet

1. Material test certificate: As per EN 10204 3.1 OR EN 10204 3.2

2. Material Standerd: Material As Per International Standerd ASTM with An ISO 15156.

3. Packing: Nylon Bags, Plastic, Wooden Box with Fumigation Certificates.

4. Back up documents such as:

Stainless Steel Threaded Flexolet Olet Fittings

Material	Type
Stainless Steel 310H / F310H / F310H	Threaded Flexolet
Stainless Steel 316 / 316L / 316Ti	Threaded Flexolet
Stainless Steel 321 / 321H / F321 / F321H	Threaded Flexolet
Stainless Steel A182 F304 / F304L / F304H	Threaded Flexolet
Stainless Steel A182 F316 / F316L / F316Ti	Threaded Flexolet
Stainless Steel A182 F321 / F321H	Threaded Flexolet

Alloy Steel Threaded Flexolet Olet Fittings

Material	Type
Alloy Steel ASTM A182 F5 / F9	Threaded Flexolet
Alloy Steel ASTM A182 F11 / F22	Threaded Flexolet
Alloy Steel ASTM A182 F91	Threaded Flexolet
Alloy Steel ASTM A182 F12 / F91	Threaded Flexolet

Carbon Steel Threaded Flexolet Olet Fittings

Material	Type
ASTM A105	Threaded Flexolet
Carbon Steel	Threaded Flexolet
ASTM A350 LF2	Threaded Flexolet

Duplex & Super Duplex Steel Threaded Flexolet Olet Fittings

Material	Type
Duplex ASTM A182 F51 (2205)	Threaded Flexolet
Super Duplex ASTM A182 F53 (2507)	Threaded Flexolet
Super Duplex ASTM A182 F55 (32760)	Threaded Flexolet
Duplex ASTM A815 UNS S31803 (2205)	Socketweld Flexolet
Super Duplex ASTM A815 UNS S32750 (2507)	Socketweld Flexolet
ASTM A815 UNS S32760 (2507)	Socketweld Flexolet

High Nickel Alloy Threaded Flexolet Olet Fittings

Material	Type
Nickel ASTM B 564 N06600 (Inconel 600)	Threaded Flexolet
Nickel ASTM B 564 N06625 (Inconel 625)	Threaded Flexolet
Nickel ASTM B 564 N08800 (Incoloy 800)	Threaded Flexolet
Nickel ASTM B 564 N08810 (Incoloy 800H)	Threaded Flexolet
Nickel ASTM B 564 N08811 (Incoloy 800HT)	Threaded Flexolet
Nickel ASTM B 564 N08904 (904L)	Threaded Flexolet
Nickel ASTM B 564 N10276 (Hastelloy C276)	Threaded Flexolet
Nickel ASTM B 564 N10665 (Hastelloy B2)	Threaded Flexolet
Nickel ASTM B 564 N02200 (Nickel 200)	Threaded Flexolet
Nickel ASTM B 564 N02201 (Nickel 201)	Threaded Flexolet
Inconel 600 / 601 / 625 / 718	Threaded Flexolet
Incoloy 800 / 800H / 800HT / 825	Threaded Flexolet

Cupro Nickel Threaded Flexolet Olet Fittings

Material	Type
ASTM B466 C70600 (Copper Nickel 90/10)	Threaded Flexolet
ASTM B466 C71500 (Copper Nickel 70/30)	Threaded Flexolet
Cupro Nickel 70/30 & 90/10	Threaded Flexolet
ASTM B467 UNS C70600	Threaded Flexolet
ASTM B467 UNS C71500	Threaded Flexolet

Cupro Nickel Threaded Flexolet Olet Fittings (Extended)

Material	Type
ASTM B467 UNS C70600 (Cupro Nickel)	Threaded Flexolet
ASTM B467 UNS C71500 (Cupro Nickel)	Threaded Flexolet
ASTM B467 UNS C70600 Aluminium Bronze	Threaded Flexolet
ASTM B467 C61400 Nickel Brass	Threaded Flexolet

Precision-Engineered Threaded Flexolet for Critical Connections

Threaded Flexolets are forged branch outlet fittings designed to offer superior strength and leak resistance in threaded piping systems. They are commonly used in high-pressure and high-temperature applications across sectors such as oil and gas, petrochemicals, shipbuilding, and offshore platforms. These fittings provide an easy and secure method of branching from a larger pipe without welding, making them ideal for quick installation and replacement in demanding conditions.

Wide Range of High-Performance Alloys

These Flexolets are available in an extensive selection of materials including stainless steel, duplex and super duplex steel, Inconel, Monel, Hastelloy, Titanium, Nickel alloys, and Cupro Nickel. This ensures optimal performance in both corrosive and non-corrosive environments. Each fitting is produced under strict quality guidelines and adheres to standards like ASME B16.11, MSS-SP-97, and BS 3799. The materials used undergo heat treatment, precision threading, and surface finishing to ensure durability and a long service life.

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