ASME B16.11 | Forged Socket Weld Reducing Tees | Class 3000–9000 | NPS 1/8–4
Elite provides high-quality Forged Socket Weld Unequal Tees, also known as Reducing Tees, for industrial piping, process systems, oil & gas, petrochemical, chemical, power generation and general engineering applications. These fittings are designed to connect a smaller branch pipe to a larger main run while maintaining a compact and reliable socket-weld connection.
ASME B16.11 Socket Weld Unequal Tees are manufactured from forged materials and are available in carbon steel, stainless steel, alloy steel, duplex, super duplex, nickel alloys, copper-nickel and other specialty materials. Elite can supply standard configurations as well as specially engineered reducing tees to customer drawings, piping specifications and project requirements.
For reducing tees, ASME B16.11 specifies how the openings are designated: the largest run opening is stated first, followed by the opposite run opening, with the branch size stated last.
| Socket Weld Unequal Tee | Specialty / Material Options |
|---|---|
| Forged Socket Weld Unequal Tee | Forged Socket Weld Reducing Tee |
| ASME B16.11 Socket Weld Unequal Tee | Equal / Reducing Branch Configuration |
| Class 3000 Socket Weld Unequal Tee | Class 6000 Socket Weld Unequal Tee |
| Class 9000 Socket Weld Unequal Tee | Stainless Steel Socket Weld Unequal Tee |
| Carbon Steel Socket Weld Unequal Tee | Alloy Steel Socket Weld Unequal Tee |
| Duplex Steel Socket Weld Unequal Tee | Super Duplex Socket Weld Unequal Tee |
| Copper-Nickel Socket Weld Unequal Tee | Nickel Alloy Socket Weld Unequal Tee |
| Monel Socket Weld Unequal Tee | Inconel Socket Weld Unequal Tee |
| Hastelloy Socket Weld Unequal Tee | Titanium Socket Weld Unequal Tee |
| ASTM A182 Forged Socket Weld Unequal Tee | Custom Forged Socket Weld Unequal Tee |
| Specification | Details | |
|---|---|---|
| Product Type | Forged Socket Weld Unequal / Reducing Tee | |
| Design / Dimensions | ASME B16.11 | |
| Additional Standards | MSS SP-79, MSS SP-95, MSS SP-97, BS 3799, where applicable | |
| Size Range | NPS 1/8" to 4" | |
| Pressure Classes | 3000, 6000 and 9000 | |
| Configuration | Unequal / Reducing Tee | |
| Branch | Reduced Branch | |
| End Connection | Socket Weld | |
| Manufacturing | Method 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 applicable identification | |
| Inspection | Visual, dimensional, material and mechanical testing as applicable | |
| NDE | PMI, UT, MT, PT and other methods as specified | |
| Documentation | MTC, EN 10204 3.1/3.2, COC and inspection reports | |
| Note: ASME B16.11 designates socket-weld forged fittings in Classes 3000, 6000 and 9000. Class 2000 is associated with threaded fittings rather than standard socket-weld fittings, so it should not be listed as a socket-weld class. | ||
| Custom Requirement | Details |
|---|---|
| Nominal Size | NPS / DN or project specific |
| Run Size | Project specified |
| Branch Size | Project specified |
| Pressure Class | 3000 / 6000 / 9000 or project specified |
| Material | Required material grade |
| Tee Type | Unequal / Reducing |
| Connection | Socket Weld |
| Bore | Standard / Project specified |
| Wall Thickness | Project specified |
| Socket Depth | Project specified |
| Heat Treatment | As required |
| NDE | Project specified |
| Inspection | ITP / Third-party requirements |
| Marking | Customer requirements |
| Documentation | MTC / COC / Inspection reports |
| Feature | Available Options |
|---|---|
| Nominal | Size NPS 1/8"–4" |
| Pressure Class | 3000 / 6000 / 9000 |
| Connection | Socket Weld |
| Configuration | Unequal / Reducing Tee |
| Branch | Reduced Branch |
| Material | Carbon Steel / Stainless / Alloy / Duplex / Nickel / Cu-Ni |
| Bore | Standard / Project Specified |
| Wall Thickness | Standard / Customer Specified |
| Socket Depth | Standard / Project Specified |
| End Preparation | Socket Weld |
| Marking | Standard / Customer Specified |
| Inspection | Standard / Project Specific / Third Party |
| Inspection / Documentation | Availability |
|---|---|
| Material Test Certificate | Available |
| EN 10204 3.1 | Available |
| EN 10204 3.2 | Where specified |
| Certificate of Conformance | Available |
| Dimensional Inspection | Available |
| Chemical Analysis | Material dependent |
| Mechanical Testing | Material dependent |
| Heat Treatment Records | Where applicable |
| PMI | As specified |
| UT | As specified |
| MT | As specified |
| PT | As specified |
| Visual Inspection | Standard |
| Third-Party Inspection | Available |
| ITP | Project specific |
| Material Traceability | Maintained |
| Packing & Marking Records | Available |
Note: ASME B16.11 establishes ratings, dimensions, tolerances, marking and related requirements for forged socket-welding and threaded fittings. Material requirements are governed by the applicable material specification.
Carbon Steel
ASTM/ASME A105/A105N, ASTM A350 LF2/LF3 and other project-specified carbon steel grades.
Stainless Steel
ASTM/ASME A182 F304/F304L, F316/F316L, F321/F321H, F347/F347H, F304H, F316H, F316Ti, F317/F317L, F904L and other approved stainless steel grades.
Duplex & Super Duplex
ASTM/ASME A182 F51, F53 and F55, including UNS S31803, S32205, S32550, S32750, S32760 and S32950.
Alloy Steel
ASTM/ASME A182 F1, F5, F9, F11, F12, F22, F91 and F92, with additional 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, with applicable ASTM/ASME material specifications.
Titanium & Special Alloys
Titanium and other specialty materials can be supplied for demanding corrosion, temperature and process conditions according to customer specifications.
Material selection is based on pressure, temperature, process fluid, corrosion conditions, mechanical requirements and applicable project specifications.
Standard Reducing Socket Weld Tee
A forged tee with a smaller branch connection than the main run, allowing different pipe sizes to be connected within a compact socket-weld arrangement.
Heavy-Wall Reducing Tee
Designed for applications requiring increased wall thickness or enhanced mechanical strength, subject to the applicable material and project requirements.
High-Pressure Socket Weld Unequal Tee
Forged construction suitable for high-pressure piping systems and available in Class 3000, 6000 and 9000 configurations.
Stainless Steel Reducing Tee
Manufactured from corrosion-resistant stainless steel grades for chemical, process, water and other demanding services.
Special / Custom Reducing Tee
Non-standard branch sizes, dimensions, wall thicknesses, materials and markings can be manufactured according to approved customer drawings.
Elite’s manufacturing and inspection process can include:
Forged Socket Weld Unequal Tees are commonly used in:
For quotation, provide:
Run Size + Branch Size + Pressure Class + Tee Type + Material + Connection + Bore + Quantity + Inspection Requirements
Example
2″ × 1″ Class 6000 Socket Weld Unequal Tee, ASTM A105N, Forged Construction, ASME B16.11, Socket Weld Ends, EN 10204 3.1.
