Match the mating flange
Confirm nominal size, standard, class and face.
LEKE PIPING / PRODUCTS
Blind Flanges
Blind flanges close flanged connections. Specify any additional openings or machining separately.
PRODUCT DETAILS
Blind flange specifications to confirm.
We can also make custom sizes, thicknesses and other dimensions to your drawing. Send your specifications with your RFQ so we can confirm the details.
| Parameter | Details to confirm |
|---|---|
| Function | Closure of a flanged opening |
| Connection | Nominal size, bolt pattern, class or PN, facing, standard and edition |
| Special machining | Specify any tapping or opening on a drawing, including size and location |
| Material | Confirm material specification and grade |
Product dimensions, material grades and documentation are confirmed against your enquiry and applicable project requirements.
Primary dimensional reference: ASME B16.5 (NPS 1/2–24) or B16.47 (NPS 26–60), as applicable. Confirm the product type, edition and applicable size before order.
DIMENSIONAL REFERENCE
Blind Flange dimensional drawing.
Use the section view to identify the dimensions to confirm in your enquiry.
Reading this drawing
- D
- Flange outside diameter
- G
- Facing diameter shown in this drawing
- t
- Flange thickness indicated by the drawing
Symbols describe this supplied drawing. Confirm their correspondence with the selected standard and dimension table; notation may differ.
Any 1.6 mm facing height shown is specific to the supplied illustration. The applicable standard, pressure class and facing type determine the required value. This diagram does not define a universal facing height.
SELECTION & ENQUIRY
What to confirm before ordering blind flanges.
Separate standard and custom details
Identify special holes or machining on a drawing.
Confirm inspection
State the documents and inspection required before quotation.
TECHNICAL REFERENCES
Check dimensions before your RFQ.
ASME B16.5 / B16.47
Flange dimensions and connection references
Check the stated edition, units and scope. The confirmed project specification governs final requirements.
Blind Flange — weight estimate
Use the existing calculator for preliminary estimates. Confirm the final dimensions, material and actual product weight separately.
PRODUCT VIEWS
Blind flanges — closer look.
Compare the product views. Use the dimensional drawings and confirmed specifications for your order.
DIMENSIONAL REFERENCES
Product reference dimensions.
Reference data retained from the existing product page. Check the stated standard, edition, units and the approved project specification.
Open dimensional reference tables
Standard & Custom Flange Solutions
Response within 24 hours
ANSI B16.5 CLASS 150 FORGED Blind FLANGES dimensions specification
| Nominal Pipe Size | Outside Diam. D | O.D. of Raised Face G | Thickness t |
|---|---|---|---|
| 1/2 | 89 | 35.1 | 11.2 |
| 3/4 | 99 | 42.9 | 12.7 |
| 1 | 108 | 50.8 | 14.2 |
| 1 1/4 | 117 | 63.5 | 15.7 |
| 1 1/2 | 127 | 73.2 | 17.5 |
| 2 | 152 | 91.9 | 19.1 |
| 2 1/2 | 178 | 104.6 | 22.4 |
| 3 | 191 | 127.0 | 23.9 |
| 3 1/2 | 216 | 139.7 | 23.9 |
| 4 | 229 | 157.2 | 23.9 |
| 5 | 254 | 185.7 | 23.9 |
| 6 | 279 | 215.9 | 25.4 |
| 8 | 343 | 269.7 | 28.4 |
| 10 | 406 | 323.9 | 30.2 |
| 12 | 483 | 381.0 | 31.8 |
| 14 | 533 | 412.8 | 35.1 |
| 16 | 597 | 469.9 | 36.6 |
| 18 | 635 | 533.4 | 39.6 |
| 20 | 699 | 584.2 | 42.9 |
| 24 | 813 | 692.2 | 47.8 |
» These flanges will be furnished with a 1/16″ raised face unless otherwise specified.
» Standard Bore will be furnished unless otherwise specified.
COMMON QUESTIONS
Before you send the enquiry.
Is a blind flange the same as a pipe cap?
No. A blind flange closes a bolted flanged connection; a butt-weld pipe cap is welded to the pipe end.
What mating flange information should I provide?
State the mating flange specification, nominal size, rating, facing and bolt pattern. Include a drawing if the connection is non-standard.
Can a blind flange include a tapping or instrument connection?
Include the required hole or connection on a controlled drawing. Material, position, connection details and suitability must be reviewed before confirming a modified design.
What should be confirmed before ordering a replacement?
Confirm the dimensions, facing and material requirements from the approved documents. Do not infer allowable service conditions from thickness or appearance alone.
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View product details →Need Blind Flanges?
Request a quote for this product →Send the size, standard and edition, class or PN, facing, material grade and quantity. Attach your drawing where available.
SEND YOUR REQUIREMENT
From your specification
to a clearer quotation.
Email your item list with quantities, destination and required delivery date. Flag any open points.
USEFUL TO INCLUDE
- Nominal size, standard and class
- Facing and material grade
- Quantity and any special machining
- Drawing, inspection documents and destination
The quotation will confirm supply scope, required documents and delivery terms.