Service Metal
6000# Forged Steel Threaded Unions
- SKU:
- 6MUT
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
6000# Forged Steel Threaded Union
6000# Forged Steel Threaded Unions are designed to provide a secure, removable connection in compatible high-pressure threaded piping systems.
Manufactured from normalized forged carbon steel conforming to ASME SA105N, these unions feature female NPT threaded connections and a three-piece design that allows piping sections to be disconnected without rotating the adjoining pipe. Forged steel fitting dimensions conform to ASME B16.11, NPT threads conform to ASME B1.20.1, and forged steel unions conform to MSS-SP-83.
Product Highlights
- 6000# forged steel threaded union
- Female NPT threaded connections
- Three-piece union design
- Allows piping sections to be disconnected without rotating adjoining pipe
- Designed for maintenance, inspection, and equipment access
- Forged steel fitting material conforms to ASME SA105N
- Material is normalized
- Forged steel fitting dimensions conform to ASME B16.11
- NPT threads conform to ASME B1.20.1
- Forged steel unions conform to MSS-SP-83
- Manufacturing facility is ISO certified
- Product specification sheet available
- Pipe sizing reference chart available
- Certificate of Conformance available
Technical Specifications
| Product Type | Threaded Union |
|---|---|
| Pressure Class | 6000# |
| Material | Forged Carbon Steel |
| Connection Type | Female NPT x Female NPT |
| Configuration | Three-Piece Union |
| Primary Function | Provide a Removable Threaded Pipe Connection |
| Material Standard | ASME SA105N |
| Heat Treatment | Normalized |
| Dimensional Standard | ASME B16.11 |
| Thread Standard | ASME B1.20.1 |
| Union Standard | MSS-SP-83 |
| Manufacturing | ISO-Certified Facility |
| Documentation | Specification Sheet and Certificate of Conformance Available |
Threaded Union Configuration
Female NPT End
One female NPT end accepts a compatible male-threaded pipe or fitting.
Union Nut & Joint
The center union assembly allows the two sides of the fitting to be joined or separated without rotating the connected piping.
Opposite Female NPT End
The second female NPT end connects to the adjoining compatible male-threaded pipe or fitting.
Construction Details
These 6000# threaded unions are manufactured from normalized ASME SA105N forged carbon steel for demanding piping applications requiring strength, durability, and dimensional consistency.
Forged steel fitting dimensions conform to ASME B16.11, while precision-machined NPT threads conform to ASME B1.20.1. The union itself conforms to MSS-SP-83.
Why Choose a Forged Steel Threaded Union?
Maintenance-Friendly Connection
- Allows convenient piping disassembly
- Does not require rotation of adjoining pipe
- Useful near valves, pumps, and equipment
- Supports future maintenance and replacement
- Designed for compatible 6000# threaded systems
Forged Steel Construction
- Manufactured from forged carbon steel
- Material conforms to ASME SA105N
- Normalized material condition
- Dimensions conform to ASME B16.11
- Union design conforms to MSS-SP-83
Threaded Union vs. Full Coupling
Threaded Union
A threaded union can be separated at its center joint, allowing connected piping or equipment to be removed without rotating the adjoining pipe sections.
Full Coupling
A full coupling provides a fixed female-threaded connection between two male-threaded pipe sections and does not include a separable center joint.
Typical Applications
Industrial & Process Piping
- Industrial process piping
- Mechanical piping systems
- Plant utility piping
- Power generation piping
- Oil and gas piping
Serviceable Connections
- Pump connections
- Valve connections
- Equipment connections
- Maintenance access points
- Compatible high-pressure threaded systems
Applicable Forged Steel Standards
ASME SA105N
Forged steel fitting material conforms to ASME SA105N and is supplied in the normalized condition.
ASME B16.11 & B1.20.1
Forged steel fitting dimensions conform to ASME B16.11, while NPT threads conform to ASME B1.20.1.
MSS-SP-83
Forged steel unions conform to MSS-SP-83.

Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm sizing before ordering 6000# forged steel threaded unions. You can also review the product specification sheet and Certificate of Conformance below.
Product Documentation
Product Specification Sheet
Review the specification sheet for dimensional and product-specific information on the 6000# forged steel threaded union.
Pipe Size Chart
Use the common pipe diameters and wall thickness chart to help confirm compatible threaded pipe sizing before ordering.
Certificate of Conformance
Certificate of Conformance documentation is available through the linked PDF.
Frequently Asked Questions
What is a 6000# forged steel threaded union?
It is a three-piece forged steel fitting designed to connect two threaded piping sections while allowing them to be disconnected at the union joint.
What type of connections does this union use?
This fitting uses female NPT threaded connections on both ends.
Why use a union instead of a coupling?
A union allows the piping connection to be separated without rotating the adjoining pipe, making it more convenient for maintenance, inspection, and equipment removal.
Does the connected pipe need to rotate during disassembly?
No. The three-piece union design allows the center joint to be separated without rotating the connected pipe sections.
What material standard applies?
The supplied product information states that forged steel fitting material conforms to ASME SA105N.
Is the material normalized?
Yes. The supplied product information specifies normalized forged carbon steel.
What dimensional standard applies?
Forged steel fitting dimensions conform to ASME B16.11.
What standard applies to the NPT threads?
NPT threads conform to ASME B1.20.1.
What standard applies specifically to forged steel unions?
Forged steel unions conform to MSS-SP-83.
What should I verify before ordering?
Confirm the nominal pipe size, 6000# class, female NPT configuration, material requirements, and applicable piping-system specifications before ordering.
Important Ordering & Installation Notes
- Confirm the required nominal NPT size before ordering.
- This listing is for a 6000# forged steel threaded union.
- Confirm that female NPT connections on both ends match the adjoining piping components.
- Forged steel fitting material conforms to ASME SA105N and is normalized.
- Forged steel fitting dimensions conform to ASME B16.11.
- NPT threads conform to ASME B1.20.1.
- Forged steel unions conform to MSS-SP-83.
- Verify compatibility with both adjoining male-threaded pipe sections or fittings.
- Use appropriate thread sealant or PTFE tape where permitted by the applicable piping code, project specification, and service.
- Ensure union seating surfaces are clean and properly aligned before final tightening.
- Avoid excessive tightening that could damage threads, seating surfaces, or adjoining components.
- Confirm applicable pressure, temperature, material, and project requirements before installation.
- Review the product specification sheet before installation.
- Certificate of Conformance documentation is available from the link above.