ASME B16.11 | Forged Threaded / Screwed Half Couplings | Class 2000–6000 | NPS 1/8–4
Elite provides high-quality Forged Threaded / Screwed Half Couplings for industrial piping, process systems, oil & gas, petrochemical, chemical processing, power generation and general engineering applications. Manufactured using controlled forging and precision machining processes, these fittings are designed for reliable dimensional accuracy, material integrity and long-term service performance.
Threaded / Screwed Half Couplings are used to create a branch connection from a pipe run or to connect a threaded fitting to a piping system. A standard threaded half coupling has a threaded connection at one end and a weldable end for attachment to the main pipe or header. Elite can supply standard and project-specific configurations in carbon steel, stainless steel, alloy steel, duplex, super duplex, copper-nickel and nickel alloys.
| Standard Threaded Half Couplings | Specialty / Material Options |
|---|---|
| Forged Threaded Half Coupling | Standard Threaded Half Coupling |
| ASME B16.11 Threaded Half Coupling | Class 2000 Threaded Half Coupling |
| Class 3000 Threaded Half Coupling | Class 6000 Threaded Half Coupling |
| Stainless Steel Threaded Half Coupling | Carbon Steel Threaded Half Coupling |
| Alloy Steel Threaded Half Coupling | Duplex Steel Threaded Half Coupling |
| Super Duplex Threaded Half Coupling | Copper-Nickel Threaded Half Coupling |
| Nickel Alloy Threaded Half Coupling | Monel Threaded Half Coupling |
| Inconel Threaded Half Coupling | Hastelloy Threaded Half Coupling |
| Titanium Threaded Half Coupling | Custom Forged Threaded Half Coupling |
| Specification | Details | |
|---|---|---|
| Product Type | Forged Threaded / Screwed Half Coupling | |
| Design / Dimensions | ASME B16.11 | |
| Thread Standard | ASME B1.20.1 / Project Specified | |
| Additional Standards | BS 3799, where applicable | |
| Size Range | NPS 1/8" to 4" | |
| Pressure Classes | 2000, 3000 and 6000 | |
| Configuration | Half Coupling | |
| End Connection | Threaded × Weld / Socket Weld, as specified | |
| Thread Type | NPT or project specified | |
| Construction | Forged | |
| Bore | Standard or project specified | |
| Surface Finish | Standard or customer specified | |
| Heat Treatment | As required by material specification | |
| Marking | Size, class, material, heat number and required identification | |
| Documentation | MTC, COC and project-required quality records | |
| Note: Pressure classes are stated according to the applicable ASME B16.11 threaded fitting configuration. Special pressure classes or non-standard designs can be supplied where specifically engineered and agreed for the project. | ||
| Custom Requirement | Details |
|---|---|
| Nominal Size | NPS / DN or project specific |
| Pressure Class | 2000 / 3000 / 6000 or project specified |
| Coupling Type | Half Coupling / Custom |
| Material | Required material grade |
| Connection | Threaded × Weld / Socket Weld |
| Thread Type | NPT / Project specified |
| Bore | Standard / Project specified |
| Wall Thickness | Project specified |
| Overall Length | Standard / Custom |
| Heat Treatment | As required |
| NDE | Project specified |
| Quality Requirements | ITP / Third-party requirements |
| Marking | Customer requirements |
| Documentation | MTC / COC / Quality reports |
| Test / Examination | Availability |
|---|---|
| Chemical Analysis | Material dependent |
| Tensile & Yield Testing | Material dependent |
| Impact Testing | Where required |
| Hardness Testing | As specified |
| Positive Material Identification (PMI) | As specified |
| Ultrasonic Testing (UT) | As specified |
| Magnetic Particle Testing (MT) | As specified |
| Liquid Penetrant Testing (PT) | As specified |
| Radiographic Testing (RT) | As specified |
| Intergranular Corrosion Testing | Where applicable |
| Pitting / Corrosion Testing | Where applicable |
| Macro / Micro Examination | Where specified |
| Additional Project-Specified Tests | Available |
| Third-Party Verification | Available |
| Document | Availability |
|---|---|
| Material Test Certificate (MTC) | Available |
| EN 10204 3.1 | Available |
| EN 10204 3.2 | Where specified |
| Certificate of Conformance (COC) | Available |
| Dimensional Report | Available |
| Chemical Analysis Report | Material dependent |
| Mechanical Test Report | Material dependent |
| Heat Treatment Records | Where applicable |
| PMI Report | As specified |
| NDE Reports | As specified |
| Quality Assurance Plan (QAP | Project specific |
| Inspection & Test Plan (ITP) | Project specific |
| Certificate of Origin | Available |
| Packing List | Available |
| Commercial Invoice | Available |
| Fumigation Certificate | Where applicable |
| Material Traceability Records | Maintained |
| Third-Party Inspection Certificate | Available |
Note: ASME B16.11 establishes dimensional and pressure-temperature requirements for forged threaded and socket-weld fittings. Thread requirements are governed by the applicable thread standard, while material requirements are governed by the applicable ASTM/ASME material specification.
Stainless Steel
ASTM/ASME A182 F304/F304L, F316/F316L, F304H, F316H, F316Ti, F317/F317L, F321/F321H, F347/F347H and F904L, with other stainless grades available to project requirements.
Duplex & Super Duplex
ASTM/ASME A182 F51, F53 and F55, including UNS S31803, S32205, S32550, S32750, S32760 and S32950.
Carbon Steel
ASTM/ASME A105/A105N and A350 LF2/LF3, with other project-specified carbon steel grades available where applicable.
Alloy Steel
ASTM/ASME A182 F1, F5, F9, F11, F12, F22, F23, F91 and F92, with other alloy grades available according to project requirements.
Copper-Nickel Alloys
ASTM/ASME SB111 and SB466, including UNS C70600 (90/10 Cu-Ni) and C71500 (70/30 Cu-Ni).
Nickel Alloys
Nickel 200/201, Monel 400/K500, Alloy 20, Inconel 600/601/625/825 and Hastelloy C276, including applicable ASTM/ASME specifications.
Titanium & Special Alloys
Titanium and other specialty alloys can be supplied according to customer specifications, process conditions and project requirements.
Material selection is based on operating pressure, temperature, process fluid, corrosion conditions, mechanical requirements and applicable project specifications.
Standard Threaded Half Coupling
A forged fitting with a threaded connection at one end and a weldable end for creating a branch connection from a pipe or header.
Threaded × Socket Weld Half Coupling
A compact configuration combining an internal threaded connection with a socket-weld connection for installation flexibility.
High-Pressure Threaded Half Coupling
Forged construction suitable for high-pressure piping applications and available in applicable pressure classes according to material, design and project requirements.
Custom Threaded Half Coupling
Special dimensions, wall thicknesses, bore configurations, materials, thread details, end connections and markings can be supplied according to customer drawings and project specifications.
Elite’s manufacturing process can include:
Forged Threaded / Screwed Half Couplings are commonly used in:
For quotation, provide:
Size + Pressure Class + Coupling Type + Material + Connection + Thread Type + Overall Length + Quantity + Quality Requirements
Example
2″ Class 6000 Threaded Half Coupling, ASTM A182 F316L, Forged Construction, NPT Female Thread × Socket Weld End, Project-Specified Dimensions, EN 10204 3.1.
