12 inch ASME B16.5 Class 300 Weld Neck Flange Dimensions
12 inch (DN 300) to ASME B16.5: Number of studs 16; Stud dia 1⅛"; Stud length — RF 170 mm; Weight — kg, approx. 64.4 kg.
Key to dimensions
- O
- Outside diameter of flange
- tf
- Minimum flange thickness
- R
- Diameter of raised face
- X
- Diameter of hub at base
- A
- Hub diameter at the welding end (pipe outside diameter)
- Y
- Length through hub (weld neck)
- W
- Bolt circle diameter
12 inch ASME B16.5 Class 300 Weld Neck Flange Dimensions — all dimensions
Class 300 weld neck flange bolting and approximate weight
| Dimension | Value | Equivalent |
|---|---|---|
| Number of studs | 16 | |
| Stud dia | 1⅛" | |
| Stud length — RF | 170 mm | 6.69 in |
| Weight — kg, approx. | 64.4 kg | 142.0 lb |
Values are nominal, from ASME B16.5 Class 300 Weld Neck Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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FAQ
12 inch ASME B16.5 Class 300 Weld Neck Flange Dimensions: common questions
What are the 12 inch ASME B16.5 Class 300 Weld Neck Flange Dimensions?
12 inch (DN 300) to ASME B16.5: Number of studs 16; Stud dia 1⅛"; Stud length — RF 170 mm; Weight — kg, approx. 64.4 kg.
Does Teshi Group supply 12 inch products?
Yes. Teshi Group stocks and supplies products to ASME B16.5 from India, with mill test certificates.
Can I download the 12 inch dimensions as a PDF?
Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full ASME B16.5 Class 300 Weld Neck Flange Dimensions chart.
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