150 Raised Face Flange
Product Overview
A 150 Raised Face Flange is a piping flange with a raised face used to concentrate gasket sealing load in low-pressure piping systems.
Technical Specifications
|
Parameter Category |
Technical Parameter |
Standard Nominal Value / Specification |
|
Pressure-Temperature Ratings |
Nominal Pressure Class |
Class 150 (150#) |
|
Max Working Pressure |
285 psi (19.6 bar) @ -20°F to 100°F (varies by material) |
|
|
Geometric Dimensions |
Flange Outer Diameter (O.D.) |
6.00 in (150 mm) |
|
Flange Minimum Thickness (t) |
0.69 in (17.5 mm) |
|
|
Raised Face Height |
0.06 in (1.6 mm) |
|
|
Raised Face Diameter |
3.62 in (92 mm) |
|
|
Drilling & Connection |
Bolt Circle Diameter (BCD) |
4.75 in (120.7 mm) |
|
Number of Bolt Holes |
4 holes |
|
|
Bolt Hole Diameter |
0.75 in (19 mm) |
|
|
Flange Facing Finish |
Gasket Surface Finish |
Serrated concentric or spiral finish |
|
Surface Roughness (Ra) |
125–250 µin (3.2–6.3 µm) |
|
|
Material & Manufacturing |
Material Grade Options |
Carbon Steel (ASTM A105), Stainless Steel (ASTM A182) |
|
Structural Hub (Weld Neck / Bore) |
Bore / Inside Diameter (B) |
2.44 in (61.9 mm) |
|
Hub Length (Y) |
1.00 in (25.4 mm) |
Material & Manufacturing Traceability
Mill Sourcing
Raw steel is sourced from audited mills with Mill Test Reports (EN 10204 3.1) provided.
Forging Process Control
Components are produced by hot forging instead of casting to improve grain flow.
Regulated Heat Treatment
Normalizing or tempering cycles are recorded per batch for process traceability.
Traceable Heat Stamping
A unique heat number is permanently stamped on each component for mill-to-factory tracking.
Dimensional Accuracy & Quality Control
Profilometer Inspection: Digital profilometers measure sealing face roughness for compliance with specified roughness ranges.
Gauge Testing: Go/No-Go plug gauges verify bolt hole alignments and pitch circles during inline inspection.
Micrometer Calibrations: Calibrated micrometers check flange thickness and raised face heights at regular production intervals.
CMM Verification: Coordinate measuring machines verify geometric tolerances against approved engineering drawings.
Hardness Verification: Brinell or Rockwell hardness testing monitors post-heat treatment structural compliance across batches.
Applications
|
Application Field |
Application Method |
|
Petrochemical Refining |
Used in low-pressure utility piping and cooling water transfer systems. |
|
Water Treatment |
Joins large-diameter municipal water mains and filtration pump lines. |
|
HVAC Systems |
Secures chilled water loops and low-pressure steam distribution lines. |
|
Marine Engineering |
Links ballast water systems and low-pressure shipboard drainage piping. |
|
Power Generation |
Couples auxiliary condenser feed lines and cooling tower pipe joints. |
International Standards & Certifications
|
Certification / Standard |
Compliance & Standard Scope |
|
ISO 9001 |
Audits factory quality management systems for manufacturing standardization. |
|
PED (Pressure Equipment Directive) |
Permits legal distribution and pressure safety compliance within the European Economic Area. |
|
CRN (Canadian Registration Number) |
Validates pressure vessel design and piping safety acceptance across Canadian provinces. |
|
API (American Petroleum Institute) |
Confirms manufacturing capability meets operational safety criteria for oil and gas environments. |
|
ASTM International Standards |
Certifies that material testing, chemistry, and mechanical properties meet global engineering baselines. |
Factory Capacity & Supply Chain
Monthly Tonnage Output
Facilities produce about 3,000 tons of forged parts on a 25,000-square-meter workshop floor.
Forging Infrastructure
Plant equipment includes 4,000-ton hydraulic forging presses and 50 automated multi-axis CNC machining centers.
Surface Treatment
An inline conveyor system applies anti-rust oils, black painting, or yellow varnish coatings per order.
Export-Grade Packing
Finished cargo is secured within ISPM-15 compliant heat-treated wooden crates and reinforced pallets.
FAQ
Q: What types of protective coatings can the factory apply to the sealing faces?
A: Rust-preventative oil, yellow varnish, or black paint can be applied, with sealing serrations left uncoated.
Q: Can we request custom stamping for our internal part numbers on the rim?
A: Yes, custom alphanumeric markings can be CNC-engraved or hard-stamped alongside standard heat numbers upon request.
Q: How does the factory secure the raised face against damage during maritime transit?
A: Raised faces are fitted with plastic caps or wooden protectors prior to packing in plywood cases.
Q: Do you accept third-party inspectors like SGS or BV during the production phase?
A: We regularly host third-party agencies for dimensional verification, witness testing, and raw material document audits.
Q: Is it possible to order these components with a smooth finish instead of serrated?
A: Yes, we can machine the contact area to a smooth finish based on your specific gasket requirements.
Q: What is the typical lead time for a standard container load of these items?
A: Manufacturing and packing require 25 to 35 days, depending on forging capacity and order backlog.
Q: How does the factory handle material cross-contamination between carbon and stainless steel lines?
A: We utilize dedicated machining zones and separate handling tools to prevent carbon pick-up on stainless products.
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