CAD and 3D Flange Drawings
Digital drawings and solid models, issued for approval before anything is machined.
Chrome-moly parts are expensive, long lead and heat treated. Getting the geometry wrong is not a quick remake, so we issue drawings and models for approval before material is committed.
For a standard ASME pattern a drawing mostly confirms bore, facing, grade and heat treatment condition. For the long weld necks, studding outlets and special body connectors that show up on high temperature service, the model is the only unambiguous description of the part.
Send a sketch, a marked-up print, a scan of an old drawing or a sample we can measure, and we will produce a dimensioned drawing for approval before release to the floor.
Why ask for a model
Section thickness review
Preheat and PWHT requirements follow thickness. Agreeing the section on a model settles the heat treatment plan too.
Weld prep and access
Chrome-moly welds need controlled preparation and often local PWHT. Model the joint and the access the heating blanket needs.
Clash checking
Drop the model into the piping model and confirm the flange clears structure, equipment and the thickness of high temperature insulation.
Approval record
On code work the approved drawing is the reference if a delivered part is ever questioned.
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 chrome steel flanges desk.