Pipe Layout Workbench

Flange Dimensions Lookup

Fast ASME B16.5 flange dimensions for common sizes and classes.

Calculator

Flange Dimensions Lookup

NPS and pressure class lookup with bolt-circle and hole details.

Flange Dimensions Lookup

Fast ASME B16.5 flange dimensions for common sizes and classes.

pipe toolsstableLive auto output

Input console

Tuned defaults are preloaded. Edit only the dimensions you know; results refresh automatically when the inputs are valid.

1

Choose the option that matches your job setup.

Default imperial
2

Choose the option that matches your job setup.

Default 6
3

Choose the option that matches your job setup.

Default 150

Use case

Confirm flange bolt pattern details before field install.

NPS and pressure class lookup with bolt-circle and hole details.

Trusted inputs

ASME B16.5 reference snapshot

Range notes

Select imperial for inches or metric for millimeters.

Current table supports common NPS 2/4/6/8 with classes 150/300.

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