ASME B16.11 | Forged Threaded / Screwed Hex Nipples | Class 2000–6000 | NPS 1/8–4
Elite manufactures and supplies high-quality Forged Threaded / Screwed Hex Nipples for industrial piping, process systems, oil & gas, petrochemical, chemical, power generation and general engineering applications. Manufactured from forged materials and precision machined to meet applicable dimensional and thread requirements, these fittings provide a compact method of connecting two internally threaded components.
A Threaded Hex Nipple has male threads at both ends with a central hexagonal section that allows the fitting to be installed or removed using a wrench. Elite can supply hex nipples in carbon steel, stainless steel, alloy
| Standard Hex Nipples | Specialty / Material Options |
|---|---|
| Forged Threaded Hex Nipple | Class 2000 Threaded Hex Nipple |
| ASME B16.11 Threaded Hex Nipple | Class 3000 Threaded Hex Nipple |
| Class 6000 Threaded Hex Nipple | Stainless Steel Hex Nipple |
| Carbon Steel Hex Nipple | Alloy Steel Hex Nipple |
| Duplex Steel Hex Nipple | Super Duplex Hex Nipple |
| Copper-Nickel Hex Nipple | Nickel Alloy Hex Nipple |
| Monel Hex Nipple | Inconel Hex Nipple |
| Hastelloy Hex Nipple | Titanium Hex Nipple |
| Heavy Hex Nipple | Custom Forged Hex Nipple |
| Specification | Details | |
|---|---|---|
| Product Type | Forged Threaded / Screwed Hex Nipple | |
| Design / Dimensions | ASME B16.11 | |
| Size Range | NPS 1/8" to 4" | |
| Pressure Classes | 2000, 3000 and 6000 | |
| Configuration | Male × Male Threaded Nipple | |
| End Connection | Threaded / Screwed | |
| Thread Standard | ASME B1.20.1 / Project Specified | |
| Thread Type | NPT or project specified | |
| Construction | Forged | |
| Hex Section | Wrenching Hex | |
| Length | Standard / Custom | |
| Bore | Standard / Project specified | |
| Surface Finish | Standard / 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 documents | |
| Note: ASME B16.11 covers forged socket-welding and threaded fittings. For threaded fittings, applicable pressure classes include 2000, 3000 and 6000. Thread requirements are governed by the applicable thread standard. | ||
| Custom Requirement | Details |
|---|---|
| Nominal Size | NPS / DN or project specific |
| Pressure Class | 2000 / 3000 / 6000 or project specified |
| Nipple Type | Standard / Heavy / Close / Long / Reducing |
| Material | Required material grade |
| Connection | Threaded / Screwed |
| Thread Type | NPT / Project specified |
| Overall Length | Standard / Custom |
| Hex Size | Standard / Custom |
| Bore | Standard / Project specified |
| Heat Treatment | As required |
| NDE | Project specified |
| Inspection | ITP / Third-party requirements |
| Marking | Customer requirements |
| Documentation | MTC / COC / Inspection reports |
| Test / Examination | Availability |
|---|---|
| Visual Examination | Standard |
| Dimensional Examination | Standard |
| Chemical Analysis | Material dependent |
| Tensile & Yield Testing | Material dependent |
| Impact Testing | Where required |
| Hardness Testing | As specified |
| Heat Treatment Verification | Where applicable |
| 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 |
| Corrosion Testing | Where applicable |
| Macro / Micro Examination | Where specified |
| 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 | Project specific |
| Inspection & Test Plan | Project specific |
| Certificate of Origin | Available |
| Packing List | Available |
| Commercial Invoice | Available |
| Fumigation Certificate | Where applicable |
| Material Traceability Records | Maintained |
| Third-Party Inspection | Available |
Note: ASME B16.11 establishes applicable dimensional and pressure-temperature requirements for forged threaded fittings. 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 pressure, temperature, process fluid, corrosion conditions, mechanical requirements and applicable project specifications.
Standard Hex Nipple
A forged male-to-male threaded fitting with a central hexagonal section designed for wrench installation.
Heavy Hex Nipple
A heavier forged configuration providing a larger wrenching section for demanding piping applications.
Close Hex Nipple
A compact threaded nipple designed where limited installation space is available.
Long Hex Nipple
A longer configuration supplied where additional connection length is required.
Reducing Hex Nipple
A male-to-male threaded configuration with different nominal sizes at each end, available where specified by project requirements.
Custom Hex Nipple
Special lengths, thread configurations, materials, bore dimensions, hex sizes, end preparation and marking can be supplied according to customer drawings and project specifications.
Elite’s manufacturing process can include:
Forged Threaded / Screwed Hex Nipples are commonly used in:
For quotation, provide:
Size + Pressure Class + Nipple Type + Material + Thread Type + Length + Hex Size + Quantity + Inspection Requirements
Example
2″ Class 6000 Threaded Hex Nipple, ASME B16.11, ASTM A105N, Forged Construction, NPT Male × Male Threads, Standard Hex, Project-Specified Length, EN 10204 3.1.
