This reference brings together the key identification and dimensional information for a Blind Flange 16 Inch Class 600. Use the source data below when checking flange thickness, weight, stud bolt requirements, bolt quantity, and hole diameter during piping design or drafting.
A blind flange has no center bore, so its primary function is to close a flanged connection or pipe end. It can also provide an accessible isolation point for maintenance, equipment blanking, or a future connection. For procurement and installation, compare this page with the project flange material, gasket, bolting, and pressure-temperature requirements.
Blind Flange 16″ Class 600
Blind Flange 16″ Class 600 is used to seal the end of a piping system or close off a flange connection in Class 600 service. It is a solid flange without a center bore and is commonly used in industrial piping systems, maintenance isolation points, and future pipeline expansion connections where a higher pressure rating is required.
This dimension data is based on ANSI / ASME B16.5-2020.
Blind Flange 16″ Class 600 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 16″
- DN Size: DN400
- Flange Thickness: 76.2mm
- Weight: 225kg
- Stud Bolt Size: 1 1/2″ UNC (or M39) x 255 Long
- Number of Bolts: 20
- Hole Diameter: 1 5/8″ (41.275mm)
What Is a Blind Flange?
A blind flange is a blank flange used to close the end of a pipeline, vessel nozzle, or equipment connection. It provides a secure shutoff point and is often selected when future maintenance, inspection, or line extension may be required.
Common Applications
Blind Flange 16″ Class 600 is commonly used for:
- Pipe end closure
- Equipment isolation
- Valve and nozzle blanking
- Maintenance shutdown work
- Process and utility piping systems
- Higher pressure piping applications
CAD Drawing Download
This page includes the CAD drawing file for Blind Flange 16″ Class 600, which can be used for drafting, detailing, and piping layout coordination.
Available Blind Flange Class 600 Sizes
This size is part of the Blind Flange Class 600 series. Check other sizes in the same category to find matching dimension data and CAD files for your project.
Notes
Before fabrication or installation, always confirm the latest project requirements, flange material specification, gasket type, bolt length, and applicable pressure-temperature rating.
How to Use This Blind Flange Reference
The dimensional list identifies the nominal size, metric designation, flange thickness, approximate component weight, and bolting information for this flange entry. The stud bolt description includes both the stated inch designation and its metric alternative, while the bolt count and hole diameter support checking against a matching flange connection.
When using the CAD/DWG file, treat the drawing as a drafting and coordination resource. Confirm that the selected flange facing, material specification, gasket arrangement, and bolting details match the project documents before fabrication or installation. A drawing file should not be used as a substitute for the applicable project specification or an engineering review.
Related Piping References
For broader design and drafting work, this page can be reviewed alongside related PipeSTD references covering flange dimensions, stud bolts, gaskets, pipe schedules, fittings, and CAD/DWG resources. These cross-checks help maintain consistent terminology and connection details across a piping model or fabrication drawing.
Checking Compatibility
- Verify the nominal pipe size and DN designation against the connected piping.
- Check the flange class and applicable project requirements before selecting mating components.
- Confirm bolt size, bolt quantity, hole diameter, and required bolt length during detailing.
- Review gasket and facing requirements with the responsible piping or mechanical engineer.
- Use the stated weight for handling and planning only after confirming the final material and configuration.
Frequently Asked Questions
What is a blind flange used for?
A blind flange closes the end of a pipeline, vessel nozzle, valve connection, or other flanged opening. It is commonly used for isolation, maintenance shutdowns, equipment blanking, and connections intended for possible future expansion.
Does a blind flange have a center opening?
No. A blind flange is a solid flange without a center bore. Its blank face closes the connected opening when the flange, gasket, and bolting arrangement are properly installed.
What bolt information is listed for this flange?
The source data lists the stud bolt designation, the corresponding metric alternative, the stated bolt length, the number of bolts, and the hole diameter. Confirm the final bolting arrangement against the project specification and mating flange.
Is the CAD file ready for fabrication without checking?
No. The CAD/DWG file is intended to support drafting, detailing, and layout coordination. Fabrication and installation should follow the applicable project documents and verified material, gasket, facing, and bolting requirements.
What should be confirmed before installation?
Confirm the latest project requirements, flange material specification, gasket type, bolt length, and applicable pressure-temperature rating before fabrication or installation.