ASME B16.47 Weld Neck Flange – 30" – Class 300 – Series A

Available for sale is a 30-inch Class 300 Weld Neck Flange, manufactured in accordance with ASME B16.47 Series A standards for large-diameter steel flanges. Designed to withstand medium-to-high pressure environments, this flange is well-suited for critical industrial piping systems in oil & gas, power generation, and chemical processing applications.

This flange is precision-engineered from high-performance materials including carbon steel (ASTM A105, A350 LF2), stainless steel (A182 F304/F316/F321), and alloy steels (A182 F11/F22/F91). The facing type may include Raised Face (RF) or Ring-Type Joint (RTJ) depending on sealing requirements. Protective surface coatings such as anti-rust oil, epoxy, or galvanized finishes are applied as required for corrosion resistance and extended service life.

Specifications:

– Flange Type: Weld Neck (WN)
– Nominal Pipe Size (NPS): 30 inches
– Pressure Rating: Class 300
– Standard Compliance:
 • ASME B16.47 Series A (Large Diameter Flanges)
 • ASME B16.5 (If smaller flanges in assembly)
– Material Options:
 • ASTM A105 / A350 LF2 (Carbon Steel / Low Temp)
 • ASTM A182 F304 / F316 / F321 (Stainless Steel)
 • ASTM A182 F11 / F22 / F91 (Alloy Steel)
 • ASTM A707 (High-Strength Carbon Steel)
– Facing Type: Raised Face (RF) / Ring-Type Joint (RTJ) (Specify if known)
– Coating: Anti-Rust Oil / Epoxy / Galvanized (Optional)
– Outer Diameter (OD): Approx. 940 mm
– Bolt Circle Diameter (BCD): Approx. 864 mm
– Bolt Hole Count: 28
– Bolt Hole Size: 1-1/8 inches (Varies by Series A or B)
– Flange Thickness: Approx. 57 mm (Varies by design)

Mechanical & Performance Properties:
– Yield Strength: ≥ 250 – 485 MPa
– Tensile Strength: ≥ 485 – 760 MPa
– Operating Temperature Range: –50°C to 600°C
– Corrosion Resistance: Available with NACE MR0175 compliance

For further specifications or to inquire about this equipment and ReflowX's logistics services, please contact ReflowX at info@reflowx.com