CAD and 3D Flange Drawings
Digital drawings and solid models, issued for approval before anything is machined.
A reducing flange has two size identities in one part, which is exactly the kind of geometry that benefits from a model before anyone cuts metal.
The published tables give you the larger flange and the smaller bore, but the transition between them, the hub profile on a reducing weld neck, the internal step on a reducing slip-on, is where the detail lives. That is also where the weld prep and the flow behaviour are decided.
Send us a sketch, a marked-up print, a scan of an old drawing or a sample, and we will produce a dimensioned drawing for approval before release to the floor.
Why ask for a model
Hub and bore agreement
On a reducing weld neck the hub must match the smaller pipe OD and schedule. The model settles it in writing.
Weld prep geometry
The bevel and land at the reduced end need to be right for the welding procedure. Model it, do not assume it.
Transition profile
Where flow matters, the shape of the step determines the pressure loss. A model lets it be reviewed.
Clash checking
Drop the model into the piping model and confirm the larger flange ring clears adjacent pipe, structure and insulation.
Formats
We work in the formats piping and mechanical groups actually use. Tell us what your system needs and we will issue in that.
| Format | Use |
|---|---|
PDF | Dimensioned drawing for review, approval and the shop floor |
DWG / DXF | 2D CAD geometry, profile and drilling layout |
STEP / IGES | Neutral 3D solids. Import into any major CAD or plant design system |
STL | Mesh geometry for visualisation and additive prototyping |
What to send us
Any of these is enough to start:
- A marked-up print or a hand sketch with the critical dimensions
- A scan or photograph of an existing drawing, including old and faded ones
- A sample part, which we can measure
- The size, class, facing and material if it is a standard pattern
- A STEP file, if the geometry already exists in your model
Drawings are issued for approval, not as a catalog. A drawing we produce for your job describes your part. Dimensional data for the published standard patterns lives on the weights and dimensions page and on the Texas Flange tables.
Need a drawing before you commit?
Send the print, or send the size, class and grade. Texas Flange quotes quickly.
Request a DrawingOr call 281-484-8325 and ask for the reducing flanges desk.