Resources
Steel Flange Reference Library
Specifying steel flanges across the full size and material range, from 1/2 inch ASME B16.5 forged carbon through 203 inch custom plate-cut, demands a working reference set. The pages collected here are the same documents our inside sales group uses when reviewing bid packages, confirming material grade callouts, and answering the technical questions that come in on the phone every day.
Reference Library
Flange Dimensions
Outside diameter, bolt circle, bolt count, bolt hole size, and hub callouts for ASME B16.5 and B16.47 forged flanges and AWWA C207 plate-cut large diameter. Steel-specific dimensional notes and the gotchas that trip up first-time specifiers.
CAD Drawings
2D drawings in DWG, DXF, and PDF and 3D models in STEP and IGES for weld neck, slip-on, blind, threaded, socket weld, lap joint, and large diameter plate-cut flanges. How to request a specific size, class, facing, and material.
Domestic vs Import
Buy American, BABA, ARRA, and AIS compliance explained in plain language. When melt origin is contractually binding, how to specify it on a quote request, and what counts as a qualifying mill for each program.
Technical Specs
Material grade quick lookup. A105 carbon through F91 chrome-moly. ASTM A350 LF2 and LF3 for low-temperature service. A694 high-yield grades for transmission pipeline work. Specification crosswalk between ASME, AWWA, and DIN callouts.
Calculation Tools
The reference pages explain what the numbers mean. The tools section gives you a working interface to pull dimensions, calculate torque, and check pressure-temperature ratings without opening a PDF. Each calculator is built around the same standards we source against every day.
Bolt Torque Calculator
Stud diameter, lubrication, and target preload to ft-lbs.
Flange Dimension Calculator
Size, class, and facing lookup with full dimensional output.
Pressure-Temperature Rating
ASME B16.5 derating curves by material group.
Forged, Plate, or Custom
Every steel flange order comes down to a production-path choice. Forged is the right answer for the bulk of B16.5 and B16.47 work up through 60 inch. Plate-cut takes over above 60 inch and on any AWWA C207 size where the dimensional flexibility matters more than the metallurgical advantage of forging. Custom plate-cut work covers the cases the catalog does not.
We stock and source all three paths. The selection logic depends on size, material, lead time, and the project documentation requirements. The reference pages above explain the considerations on each path. The blog covers the practical engineering on when to spec each.
How to Use These Resources
For a one-off specification check, the dimension and tech spec pages will usually answer the question. For active bid work, pull the CAD drawings you need, run the relevant calculator, and confirm domestic versus import requirements before the RFQ goes out. Anything you cannot resolve from the written material can go to our inside sales group.
These pages are written from a distributor perspective. We supply forged and plate-cut steel flanges from inventory and from our partner mills. We do not forge or machine the parts ourselves. We carry the inventory, coordinate with the right mill for the project, and supply the documentation packages that downstream contracts require.
Have a Specification Question?
Call (281) 484-8325 or email sales@texasflange.com. Our inside sales group answers technical questions every day and routes anything unusual to the right person.
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