Reducing Pipe Tee technical overview.
Reducing Pipe Tee from JINYI is presented in the NPS 4 × 1½ · reducing tee 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 reducing pipe tee?
A reducing pipe tee connects a smaller branch to a larger main run through a T-shaped fitting. The run size and branch size must be identified separately.
Key dimensions and installation fit
Match every weld end to the required pipe outside diameter, wall schedule and bore. Centre-to-end dimensions determine the spool layout. For reducing fittings, state the larger run or inlet first and the smaller branch or outlet second; both end dimensions are needed to avoid selecting a fitting that matches only one connection. Compare the equal pipe tee when checking whether the intended branch should retain the same nominal size as the run.
How to specify the reducing pipe tee
Specify the material grade, pipe schedule, weld preparation and inspection requirements together. Carbon-steel and stainless-steel wall schedules may differ even when the nominal size is the same. The fitting geometry does not replace the line design, corrosion allowance or welding procedure required for the operating service.
Technical data for the reducing pipe tee
| Run / branch nominal sizes | 4 × 1½ in |
|---|---|
| Run outside diameter | 114.3 mm |
| Branch outside diameter | 48.3 mm |
| Run centre-to-end C | 105 mm |
| Branch centre-to-end M | 86 mm |
| Branch angle | 90° |
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
| End diameter at NPS 4 | ±1.6 mm |
|---|---|
| Centre-to-end / length | ±2 mm |
Inspection, standards and documentation
Check end diameter, length or centre dimensions, wall thickness at the weld ends and the orientation of each outlet. Confirm the bevel and root-face detail against the welding procedure. Include material traceability, visual examination and any additional non-destructive examination required by the order.
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. For production steps and inspection considerations, see flanges and fittings manufacturing.
Where the reducing pipe tee is used
- Fabricated pipe spools. Use weld-end diameter, wall schedule and centre dimensions to prepare the spool drawing.
- Process piping. Select material and inspection scope against the line specification.
- Replacement fittings. Compare both end dimensions and branch orientation with the existing installation.
How to order a reducing pipe tee
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
| 50–199 pcs | US$3.47 per piece |
|---|---|
| 200–499 pcs | US$2.67 per piece |
| 500 pcs and above | US$1.56 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 90 degree pipe elbow, 45 degree pipe elbow, or review the pipe fittings and elbows catalog for other connection and configuration choices.
Request a custom reducing pipe tee quotation from JINYI with the drawing and quantity required for your project.
Reducing Pipe Tee selection and quotation checklist
The reduced branch must be identified separately from the run. Include the size combination, wall schedule and end preparation for all connections in the enquiry. 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.
Reducing Pipe Tee dimensions and tolerances
The first comparison for this reducing pipe tee is run diameter and branch transition. 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 run / branch nominal sizes: 4 × 1½ in; run outside diameter: 114.3 mm; branch outside diameter: 48.3 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 reducing pipe tee 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 reducing pipe tee 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 reducing tee by its actual run diameter and branch transition and the required branch tee 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 reducing pipe tee.
| Photo | Related product | Selection detail |
|---|---|---|
 | Equal Pipe Tee | Equal branch and run dimensions. Compare this separate product when the drawing requires its particular arrangement. |
 | Concentric Pipe Reducer | End diameters and transition length. Compare this separate product when the drawing requires its particular arrangement. |
 | Grooved Reducing Tee | Run size and reduced branch diameter. Compare this separate product when the drawing requires its particular arrangement. |
Questions to resolve before ordering
Which dimensions need checking first?
Start with run diameter and branch transition 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 reducing pipe tee 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
ASME butt weld fitting standard scope 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.
- 4 × 1½ in
- Run / branch nominal sizes
- 114.3 mm
- Run outside diameter
- ±1.6 mm
- Tolerance
- 3
- Quantity tiers
- End matching — Outside diameter, bore and wall thickness define the pipe interface.
- Geometry control — Centre-to-end dimensions establish the assembled spool length.
- Weld preparation — Bevel, root face and transition details follow the selected welding specification.
At a glance
- Product
- Reducing Pipe Tee
- Configuration
- NPS 4 × 1½ · reducing tee
- Run / branch nominal sizes
- 4 × 1½ in
- Run outside diameter
- 114.3 mm
- Branch outside diameter
- 48.3 mm
Dimensions and technical specification
| Parameter | Specification |
|---|---|
| Run / branch nominal sizes | 4 × 1½ in |
| Run outside diameter | 114.3 mm |
| Branch outside diameter | 48.3 mm |
| Run centre-to-end C | 105 mm |
| Branch centre-to-end M | 86 mm |
| Branch angle | 90° |
