ASA 150# Flanges
What are ASA 150# Flanges?
ASA 150# Flanges (American Standard Association Class 150) are low-pressure flanges used for joining pipes, valves, pumps, and other equipment in fluid transfer systems. Designed for applications operating under a pressure rating of 150 PSI, these flanges offer leak-proof, secure connections and are ideal for use in industries such as water treatment, HVAC, oil & gas, and chemical processing.
Asiad Steel Industries is a leading manufacturer and exporter of ASA 150# Flanges, offering high-quality flanges made from stainless steel, carbon steel, and other industrial-grade alloys. These flanges are manufactured in accordance with ASME B16.5 and ANSI standards.
Key Features
- Rated for 150 PSI working pressure – suitable for low-pressure applications.
- Available in various face types – RF (Raised Face), FF (Flat Face), and RTJ.
- Easy installation & removal – perfect for systems requiring frequent maintenance.
- Wide material range – Stainless Steel, Carbon Steel, Duplex & more.
- Complies with ANSI/ASME B16.5 standards for size and pressure ratings.
Types of ASA 150# Flanges
- Slip-On Flanges
- Weld Neck Flanges
- Blind Flanges
- Threaded Flanges
- Lap Joint Flanges
- Socket Weld Flanges
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | ½” to 24″ (DN15 – DN600) |
| Pressure Rating | Class 150 (150 PSI) |
| Standards | ANSI B16.5, ASME B16.5, BS 4504 |
| Facing Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Material Options | SS 304/316, CS ASTM A105, Duplex, Alloy Steel |
| Manufacturing | Forged / Machined / Heat Treated |
| Property | Value |
|---|---|
| Tensile Strength | 485 – 620 MPa |
| Yield Strength | 250 – 350 MPa |
| Hardness | 125 – 200 HB |
| Temperature Range | -20°C to +600°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.25 |
| Manganese (Mn) | 0.50 – 1.65 |
| Silicon (Si) | 0.15 – 0.35 |
| Chromium (Cr) | 17.0 – 20.0 |
| Nickel (Ni) | 8.0 – 11.0 |
| Sulfur (S) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A105, A182 F304 / F316 |
| EN | 1.4301 / 1.4401 |
| JIS | SUS 304 / SUS 316 |
| DIN | 1.4571 / 1.4541 |
| Flange Type | Size (Inch) | Approx. Weight (kg) |
|---|---|---|
| Weld Neck | 4″ | 7.80 |
| Slip-On | 6″ | 10.50 |
| Blind | 8″ | 18.20 |
Applications of ASA 150# Flanges
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
Can ASA 150# flanges be used for high-pressure applications?
No, these are suitable for low-pressure applications up to 150 PSI. For higher pressure, consider Class 300 or Class 600 flanges.
Are ASA 150# flanges compatible with international piping systems?
Yes, when produced to ANSI/ASME standards, they offer global compatibility.
Do you offer custom drilling patterns for flange faces?
Yes, custom bore and bolt patterns can be supplied upon request.
What certifications are provided with your flanges?
We offer Mill Test Certificates (MTC), third-party inspection reports, and material traceability.
