CS Flanges 300
Flange Weld Neck Flange
7307CS300WN01
- Material
- Carbon Steel (ASTM A105N)
- Type
- Forged
- Facing
- Raised Face (RF)
- Dimension Standard
- ASME B16.5
- Temperature
- -29 deg C to 427 deg C
- Pressure Rating
- ~51 bar at 38 deg C (Class 300)
- HSN Code
- 73079100
- GST
- 18%
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Pricing: prices for this product are not listed. Request a quotation.
- Certification
- MTR, PMI, hydrostatic/PT test certificates available.
- Coating
- As machined / oil-dipped. Primer / FBE on request.
- Taxes & Duties
- GST and all applicable levies charged extra at prevailing rates.
All dimensions in millimetres. Subject to change without notice. Spotted a mistake or wrong data? Please contact us.
About the weld neck flange
The weld neck flange has a long tapered hub that is butt-welded to the pipe. It is the strongest and most reliable flange type, preferred for high-pressure, high-temperature, and cyclic service where fatigue resistance is critical.
Applicable Standards
Standards governing design, dimensions, and testing
Pipe Flanges and Flanged Fittings: NPS ½ Through NPS 24
The global standard for pressure-rated flanges. Defines seven pressure classes (150 through 2500) with pressure-temperature ratings for multiple material groups.
- Pressure classes: 150 / 300 / 400 / 600 / 900 / 1500 / 2500
- P-T ratings vary by material group and temperature
- Carbon steel A105 (Group 1.1) @ 38°C: Class 150 ~20 bar, Class 300 ~51 bar; stainless and alloy groups rate differently
- Raised Face (RF) is the standard facing type
- Ring Type Joint (RTJ) for high-pressure critical service
- Bolt torque and gasket requirements are user's responsibility
More in Class 300
CS Flanges 300
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