Threaded Pipe Union technical overview.
Threaded Pipe Union from JINYI is presented in the 1 in · Class 150 · SS304 configuration. Use the dimension schedule, connection details and inspection requirements below when comparing this product with your pipework or equipment drawing.
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What is a threaded pipe union?
A threaded pipe union provides a separable connection between two specified threaded pipe ends. The union nut joins the mating parts so the connection can be dismantled using the appropriate maintenance procedure.
Key dimensions and installation fit
The threaded union connects two pipe ends through a removable joint. Check the nominal thread size, thread form, available assembly length and access needed to tighten the union nut. A matching inch size alone does not confirm compatibility between NPT, BSPT and other thread systems. For a threaded pipe connection terminating at a flanged interface, compare the threaded flange and check the exact thread specification.
How to specify the threaded pipe union
Select the body grade, sealing arrangement and thread system for the service. Keep pressure designation separate from the actual allowable operating pressure, which also depends on temperature and the complete connection. Specify whether thread sealant, a gasket or another sealing element forms part of the required assembly.
Technical data for the threaded pipe union
| Nominal size | 1 in / DN25 |
|---|---|
| Pressure designation | Class 150 |
| Overall length | 57.91 mm |
| Approximate weight | 0.308 kg |
| Material | SS304 |
| Connection | Female threaded |
Sizes and dimensional requirements
The dimensional schedule identifies the illustrated configuration. Compare each value with the mating pipe, equipment or support drawing. A nominal designation does not replace the actual connection diameter, installation envelope or mounting detail. The choices above let you include a different configuration with your quotation request.
Dimensions and tolerance schedule
| Machined length >30–120 mm | ±0.3 mm |
|---|---|
| Machined length >120–400 mm | ±0.5 mm |
Inspection, standards and documentation
Inspect the threaded ends, sealing faces and union alignment before installation. Protect threads from impact during transport and avoid forcing mismatched thread forms together. An enquiry should identify the pipe thread specification as well as the dimensional and material requirements.
State the required product standard and edition, material records and inspection acceptance criteria before ordering. Where pressure, temperature, movement or load are relevant, provide the operating and test conditions together. Document requirements should identify the actual component and drawing revision; a general certificate does not replace a dimensional or material record for the ordered item. Review connector and flexible-joint manufacturing when defining the production and acceptance scope.
Where the threaded pipe union is used
- Removable pipe connections. Allow access to the union nut and identify both mating thread systems.
- Utility pipework. Select the body material and sealing arrangement for the fluid and temperature.
- Maintenance access. Use the removable joint where the completed piping design requires component disconnection.
How to order a threaded pipe union
Select the required options and send the quantity, destination, material and controlled drawing to JINYI. Include changed dimensions, mating details, finish, marking and packing requirements. The quotation defines the final configuration, inspection scope and delivery terms so the component can be checked against the intended installation.
Quantity prices and order preparation
| 100–499 pcs | US$1.99 per piece |
|---|---|
| 500–999 pcs | US$1.89 per piece |
| 1,000 pcs and above | US$1.80 per piece |
Freight and taxes are quoted separately. A different material, size or drawing can change the price and delivery requirements. Confirm the agreed specification before manufacture, and keep the drawing revision, selected options and ordered quantity together in the enquiry.
Other JINYI products worth comparing
Compare grooved pipe coupling, grooved 90 degree elbow, or review the pipe connectors and couplings catalog for other connection and configuration choices.
Request a custom threaded pipe union quotation from JINYI with the drawing and quantity required for your project.
Threaded Pipe Union selection and quotation checklist
The union provides a separable threaded connection. Identify the thread standard and end arrangement and check that the nut remains accessible after installation. Use the photographed product form to identify the arrangement, then use the controlled drawing to define what will be supplied. Similar-looking components can have different end details, load paths or maintenance requirements.
Threaded Pipe Union dimensions and tolerances
The first comparison for this threaded pipe union is thread form and assembly length. Mark the dimensions that control mating, alignment and installation space on the enquiry drawing. Give units for every value and identify the datum from which it is measured. If a dimension is critical, specify its individual tolerance and measurement method rather than relying on a general tolerance note.
The current schedule identifies nominal size: 1 in / DN25; pressure designation: Class 150; overall length: 57.91 mm. Read these entries together with the configuration and tolerance tables above. Reference or example values describe the displayed arrangement; the approved JINYI quotation and drawing define the ordered component. A different interface, material or service condition needs a fresh comparison.
Prepare the material and interface information
For a threaded pipe union enquiry, identify the required material designation and supplied condition. Describe the mating components, attachment method and environment. Include the operating temperature and any relevant pressure, movement or structural load. These inputs should describe the actual installation, including changes between normal operation, start-up and maintenance where applicable.
Specify coatings, surface finish and marking separately from the base material. If traceability is needed, identify the record required and how it must correspond to the delivered component. Agree whether inspection covers dimensions, material documentation, welds or functional testing; these are different checks with different acceptance criteria.
Custom threaded pipe union quotation
Attach the latest drawing revision, required quantity and delivery destination when contacting JINYI. Highlight departures from the illustrated arrangement, including changed dimensions, connections, finish and packing. For repeat orders, reference the approved configuration and list changes explicitly so an earlier drawing is not assumed to remain current.
The three price tiers above organise the displayed quantity bands. Compare quotes using the same drawing, material, inspection scope and unit of supply. A piece, a segment and a complete assembly are different units where applicable. Confirm freight, taxes, documentation and delivery terms with the final quotation instead of inferring them from the displayed unit price.
Compare related component arrangements
Evaluate this pipe union by its actual thread form and assembly length and the required threaded union arrangement. The photographs below show separate JINYI products for comparison. They are linked to their own technical pages and are not additional gallery views of this threaded pipe union.
| Photo | Related product | Selection detail |
|---|---|---|
 | Threaded Flange | Thread standard and bolt pattern. Compare this separate product when the drawing requires its particular arrangement. |
 | Socket Weld Elbow | Socket depth and connection class. Compare this separate product when the drawing requires its particular arrangement. |
 | Mechanical Tee Outlet | Cut-hole size and saddle position. Compare this separate product when the drawing requires its particular arrangement. |
Questions to resolve before ordering
Which dimensions need checking first?
Start with thread form and assembly length and the mating or mounting detail. Check nominal designations against measured dimensions, then review the installation envelope. Photographs help identify the form; the drawing provides the dimensional basis for acceptance.
What should the quotation include?
A threaded pipe union quotation should identify the configuration, drawing revision, material, quantity, price basis and agreed inspection records. Keep these details together with the approved order so receiving inspection can compare the delivered product with the specified component.
Independent terminology reference
Victaulic grooved fitting product families provides an independent reference for component terminology. Use the specified standard and edition where required by the project. This link does not establish JINYI certification, product approval or interchangeability with another manufacturer.
- 1 in / DN25
- Nominal size
- Class 150
- Pressure designation
- ±0.3 mm
- Tolerance
- 3
- Quantity tiers
- Service access — The union nut allows disconnection without rotating the full pipe run.
- Matched halves — Seat geometry belongs to the complete union assembly.
- Thread compatibility — Confirm the thread system before selecting size.
At a glance
- Product
- Threaded Pipe Union
- Configuration
- 1 in · Class 150 · SS304
- Nominal size
- 1 in / DN25
- Pressure designation
- Class 150
- Overall length
- 57.91 mm
Dimensions and technical specification
| Parameter | Specification |
|---|---|
| Nominal size | 1 in / DN25 |
| Pressure designation | Class 150 |
| Overall length | 57.91 mm |
| Approximate weight | 0.308 kg |
| Material | SS304 |
| Connection | Female threaded |
