Flanges
Weld Neck (WN) Flanges
Weld Neck flanges feature a long tapered hub that provides excellent stress distribution and is butt-welded to the pipe, making them the strongest and most reliable flange type. They are the preferred choice for high-pressure, high-temperature, and critical service applications where joint integrity is paramount. Shree Raj Steels supplies WN flanges from 1/2" to 60" in Class 150 through 2500.
Size: 1/2" – 60" | Class 150 – 2500Standards: ANSI B16.5, ASME B16.47 Series A/B, DIN 2631/2633/2637
ISO Certified Quality
Full material traceability & mill test certificates.
Technical Specifications
| Size Range | 1/2" – 24" (B16.5) / 26" – 60" (B16.47) |
|---|---|
| Pressure Class | 150, 300, 600, 900, 1500, 2500 |
| Face Finish | RF, RTJ, FF |
| Manufacturing | Forged |
Surface Finish / Coating
BareAnti-Rust OilGalvanisedCladded
Available Grades
Carbon Steel
- ASTM A105
- ASTM A350 LF2
Alloy Steel
- ASTM A182 F5
- ASTM A182 F9
- ASTM A182 F11
- ASTM A182 F22
- ASTM A182 F91
Stainless Steel
- ASTM A182 F304/L
- ASTM A182 F316/L
- ASTM A182 F321
- ASTM A182 F347
- F904L
- F51 (Duplex 2205)
- F53 (Super Duplex 2507)
Exotic / Special Alloys
- Monel 400
- Inconel 600/625
- Hastelloy C276
Applications
High-Pressure Piping
Critical Service
Refineries
Petrochemical Plants
Power Plants
Offshore Platforms
Key Features
- Strongest flange type
- Excellent stress distribution
- Long tapered hub reduces stress concentration
- Butt-weld connection for full strength
- NACE MR0175 grades available
Manufacturing Standards
ANSI B16.5
ASME B16.47 Series A/B
DIN 2631/2633/2637
EN 1092-1
JIS B2220
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