ASME B16.5 Weld Neck Flange – 16" – Class 2500 – Ultra-High Pressure Rated

Available for sale is a 16-inch Class 2500 flange, designed for ultra-high-pressure applications and manufactured in accordance with ASME B16.5 standards. Ideal for use in critical service environments such as refineries, offshore platforms, and petrochemical plants, this flange offers exceptional durability and sealing reliability under extreme pressure and temperature conditions.

Available in Weld Neck (WN), Blind (BL), or Slip-On (SO) configurations, the flange is offered in multiple materials including carbon steel (ASTM A105, A350 LF2), stainless steel (A182 F304/F316/F321), alloy steels (A182 F11/F22/F91), and high-strength steel (A707). The preferred sealing surface for Class 2500 is Ring-Type Joint (RTJ), but Raised Face (RF) options are also available upon request.

The flange is precision-machined to meet the rigorous specifications of Class 2500 service, with protective coating options such as anti-rust oil, epoxy, or galvanization depending on storage and installation needs.

Specifications:

– Flange Type: Weld Neck (WN) / Blind (BL) / Slip-On (SO) (Specify exact type)
– Nominal Pipe Size (NPS): 16 inches
– Pressure Rating: Class 2500
– Standard Compliance: ASME B16.5
– 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 Steel)
– Facing Type: Ring-Type Joint (RTJ) (Preferred) / Raised Face (RF)
– Coating: Anti-Rust Oil / Epoxy / Galvanized (Optional)
– Outer Diameter (OD): Approx. 787 mm
– Bolt Circle Diameter (BCD): Approx. 711 mm
– Bolt Hole Count: 16
– Bolt Hole Size: 1-3/4 inches
– Flange Thickness: Approx. 127 mm (Varies by material/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