Forged Steel Flange
Product Overview
A Forged Steel Flange is used to connect and seal industrial piping systems, produced by forging solid steel for high-pressure service conditions.
Technical Specification
|
Category |
Parameter |
Specification |
|
Dimensional |
Nominal Pipe Size (NPS) |
2" (DN50) |
|
Flange Type |
Welding Neck (WN) |
|
|
Facing Type |
Raised Face (RF) |
|
|
Outside Diameter (OD) |
150 mm (6.00") |
|
|
Flange Thickness (C) |
19.5 mm (0.75") |
|
|
Hub Diameter (X) |
84 mm (3.31") |
|
|
Hub Length (Y) |
62 mm (2.44") |
|
|
Bolt Circle Diameter (BC) |
120.7 mm (4.75") |
|
|
Number of Bolt Holes |
4 holes |
|
|
Bolt Hole Diameter |
19.0 mm (0.75") |
|
|
Pressure & Temperature |
Pressure Class |
Class 150 |
|
Hydrostatic Test Pressure |
450 psi (3.1 MPa) |
|
|
Operating Temperature Range |
-29°C to 425°C |
|
|
Material & Mechanical |
Material Grade |
ASTM A105 Carbon Steel |
|
Tensile Strength |
≥ 485 MPa (70 ksi) |
|
|
Yield Strength |
≥ 250 MPa (36 ksi) |
|
|
Elongation |
≥ 22% |
|
|
Hardness |
≤ 187 HBW |
|
|
Process & Quality |
Forging Ratio |
≥ 4:1 |
|
Heat Treatment |
Normalized |
|
|
Surface Roughness (Ra) |
3.2–6.3 μm |
|
|
NDT Inspection |
Visual + UT/MT (if required) |
Quality Control & Certifications
Quality Control & Inspection
Surface Roughness Control: CNC machining keeps sealing faces within Ra 3.2–6.3 μm for gasket seating.
Hardness Uniformity Testing: Brinell hardness is checked at ≤187 HBW for toughness and crack resistance.
Ultrasonic Defect Scanning: UT testing detects internal voids or cracks to remove sub-surface defects.
Dimensional Tolerance Control: Critical thickness is controlled within +3.0/-0.0 mm for ASME B16.5 alignment.
Hydrostatic Proof Testing: Hydro test up to 450 psi verifies pressure integrity under rated limits.
Spectral Material Analysis: PMI testing verifies chemical composition against ASTM requirements.
Compliance & Certificates
|
Certificate / Standard |
Verification / Proof of Compliance |
|
ISO 9001 |
Certified quality management system for production consistency |
|
PED (Pressure Equipment Directive) |
Compliance with EU pressure equipment directive |
|
EN 10204 3.1 |
Material test certificate with full traceability and test data |
|
Traceability Stamping |
Permanent identification for lifecycle tracking |
OEM & Engineering Services
CAD/SolidWorks Drawing Review
Engineers review drawings and tolerances before forging.
Custom Coating Application
Coating options include black paint, varnish, zinc plating, and 3LPE.
Flange Facing Machining
CNC turning centers machine standard profiles for RTJ, RF, and FF sealing interfaces.
Metallurgical Consultation
Material selection support based on temperature, pressure, and media.
Traceability & Packaging Compliance
Permanent Steel Stamping: Each component is stamped with Heat No., Lot No., Size, Material.
Full Lifecycle Traceability: Standardized rim markings link each finished part back to its specific production lot.
Anti-Rust Oil Coating: Exposed surfaces receive a specialized oil application to prevent oxidation during maritime transit.
Flange Face Protection: Plastic caps protect sealing faces from impact and scratches.
ISPM 15 Compliant Packaging: Shipping utilizes non-fumigation plywood cases and pallets to meet international customs regulations.
FAQ
Q: What is the standard lead time for non-standard custom dimensions?
A: Lead time is 4–6 weeks depending on material and tooling.
Q: Can you provide independent third-party inspection reports before shipping?
A: Third-party inspection (SGS, BV, TÜV) is accepted at buyer cost.
Q: Do you accept mixed material grades within a single container order?
A: Carbon, stainless, and alloy steel can be mixed in one order.
Q: How do you protect the weld bevels on welding neck types during transit?
A: Heavy-duty plastic bevel protectors are securely fitted to prevent denting during port handling.
Q: Can you produce according to Japanese JIS or European EN standards instead of ASME?
A: Yes, our tooling covers JIS B2220 and EN 1092-1 specifications for international compatibility.
Q: Do your packaging cases include integrated lifting straps for port cranes?
A: Plywood boxes exceeding 1 metric ton are built with integrated forklift channels and steel lifting lugs.
Q: Can we request a specific brand of rust-preventative oil for sensitive environments?
A: Yes, clients can specify approved chemical brands or water-based alternatives during the ordering process.
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