Forged olet Fitting
Coupolet
GS MetalFit offers Coupolet olet fittings in a range of stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloys, cupro nickel and other specialised materials, subject to specification and availability. These branch connection fittings are used to create an outlet connection from a run pipe or header where the selected fitting design is suitable for the piping system.
Available configurations may include forged, socket weld, threaded and butt-weld connections. Sizes, pressure classes, schedules, materials and end connections can be specified according to project requirements.
Product Type:
Coupolet Olet Fittings
Size :
1/8" NB to 24" NB stated for socket-weld and threaded configurations; confirm availability for the selected design
Pressure Class:
1500#, 3000#, 6000# and 9000#
About This Product
Coupolet
GS MetalFit supplies Coupolet olet fittings for piping systems that require a branch outlet connection. Olet fittings are designed to connect a branch pipe to a larger run pipe or header. The appropriate design depends on the required branch geometry, connection type, pressure conditions, material specification and piping design requirements.
Coupolet is the product designation supplied for this catalogue page. The exact geometry, reinforcement arrangement and connection configuration should be confirmed against the applicable engineering drawing and product standard before ordering.
Depending on the specified design, outlet fittings may be available with butt-weld, socket-weld or threaded ends. Threaded configurations may use NPT connections where specified. Material options listed in the catalogue source include stainless steel grades such as ASTM A182 F304L and F316Ti, carbon steel ASTM A105, duplex and super duplex steels, and specialised nickel alloys such as Inconel, Monel and Hastelloy.
The source catalogue also identifies Nickel 200 Coupolet fittings manufactured from forged material. The exact material specification and manufacturing route should be confirmed for each requested product.
Technical Specifications
Manufacturing Processes
- Forging and free forging, where applicable
- Plate cutting, where applicable
- Threading, where specified
- Heat treatment, where required
- Dimensional preparation and verification
Inspection, Testing and Supporting Documents
- Raw Material Test Certificate
- Material Test Certificate to EN 10204 Type 3.1 or Type 3.2, as agreed
- Intergranular Corrosion (IGC) Test Report, where applicable
- Material Dimension Chart
- Heat Treatment Chart
- Positive Material Identification (PMI) Report, where specified
- Material Chemical Analysis Report
- Approved Laboratory Test Reports, where applicable
- Quality Assurance Plan (QAP), where agreed
- Material Hardness Testing Report, where specified
- Mechanical Properties Report
- Pressure Capacity or Pressure Testing Documentation, where applicable
- Radiography Test Report, where specified
- Flattening or Flaring Test Reports, where applicable
- Third-Party Inspection Report, where agreed
Related Product Forms
Other Outlet Types Listed
- Welding Outlet
- Socket-Weld Outlet
- Threaded Outlet
- Lateral Outlet
- Sweep Outlet
- Nippo Outlet
- Elbow Outlet
- Coupling Outlet
- Flex Outlet
- Braze Outlet
Packing Options
Standards and Compliance Note
Materials & Grades
Stainless Steel Coupolet Olet Fittings
ASTM A182 F304 / F304L / F304H
ASTM A182 F316 / F316L / F316Ti
ASTM A182 F347 / F347H
ASTM A182 F309 / F310S
ASTM A182 F317 / F317L
ASTM A182 F904L
ASTM A182 F321 / F321H
ASTM A182 F446 / F440, as listed in source
Alloy Steel Coupolet Olet Fittings
ASTM A182 F5
ASTM A182 F9
ASTM A182 F11
ASTM A182 F12
ASTM A182 F22
ASTM A182 F91
Carbon Steel Coupolet Olet Fittings
ASTM A105 / ASME SA105N
ASTM A350 LF2
Duplex & Super Duplex Coupolet Olet Fittings
Duplex Steel:
ASTM A182 F51 / UNS S31803
ASTM A815 F60 / UNS S32205
Super Duplex & Related Alloys:
ASTM A182 F61 / UNS S32550
ASTM A815 F55 / UNS S32507, as listed
ASTM A815 F53 / UNS S32750, as listed
Zeron 100
SMO 254 / UNS S31254
Nickel Alloy Coupolet Olet Fittings
Nickel Alloys:
Nickel 200 — UNS N02200
Nickel 201 — UNS N02201
Hastelloy Coupolet Olet Fittings
Hastelloy B2 — UNS N10665
Hastelloy B3 — UNS N10675
Hastelloy C276 — UNS N10276
Hastelloy C22 — UNS N06022
Hastelloy C2000 — UNS N06200
Hastelloy X — UNS N06002
Monel Coupolet Olet Fittings
Monel 400 — UNS N04400
Monel K500 — UNS N05500
Inconel & Incoloy Coupolet Olet Fittings
Inconel 600 — UNS N06600
Inconel 601 — UNS N06601
Inconel 625 — UNS N06625
Inconel 718 — UNS N07718
Inconel 725 — UNS N07725
Incoloy 825 — UNS N08825
Cupro Nickel & Copper Alloy Coupolet Olet Fittings
Cupro Nickel 90/10 — UNS C70600
Cupro Nickel 70/30 — UNS C71500
CuNi10Fe1Mn
CuNi30Mn1Fe
Cupro Nickel C71640
Aluminium Bronze C61400
Nickel Aluminium Bronze C63000
Naval Brass C46400
Other Special Materials for Coupolet Olet Fittings
Alloy 20 — UNS N08020
SMO 254 — UNS S31254
Titanium Grade 2
Titanium Grade 5, where applicable
Incoloy 800
Hastelloy C22
Hastelloy B2
Duplex F51
Super Duplex F55
Stainless Steel 904L
Applications
Branch Pipe Connections
Main Pipe to Branch Connections
Industrial Piping Systems
Pipeline Branch Outlets
Branch Connection Design Selection
Material Grade & Specification Selection
Coupolet Selection Note: Coupolet is listed as a branch-connection fitting. Its suitability for a specific piping application depends on the confirmed fitting design, material grade, pressure requirements, operating temperature and applicable piping specification.
The available source does not establish a verified, Coupolet-specific list of industries or service conditions. GS MetalFit recommends confirming the intended application and engineering requirements before selecting a particular configuration.
For Technical Enquiries: Please provide the run pipe size, branch size, required end connection, material grade, pressure class or design conditions, applicable standard and any project-specific inspection requirements.
Why Choose GS MetalFit?
Multiple Material Options
Coupolet material requirements can be reviewed across stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloys and copper-nickel alloys, subject to the selected product specification and confirmed availability.
Connection Options
Butt-weld, socket-weld and threaded configurations may be considered where supported by the selected Coupolet design. Connection type and end details should be confirmed during technical review.
Size and Schedule Selection
Run pipe size, branch outlet size, wall thickness and pipe schedule can be reviewed to identify a Coupolet configuration suitable for the intended branch connection.
Pressure and Design Verification
Pressure class and design requirements should be checked against the selected fitting configuration, material grade, dimensions, operating conditions and applicable piping specification.
Technical Documentation
Material test certificates, inspection reports and supporting test documents can be discussed during the enquiry stage, subject to the selected material, agreed order requirements and document availability.
Project-Specific Requirements
Customers can share drawings, run and branch dimensions, connection details, required material grades and governing standards for review against their project specifications.