Descriere
A890 5A Strainer, PN10, DN65, RF End
- Superior Corrosion Resistance: With high levels of chromium, molybdenum, and nitrogen, it excels in preventing pitting, crevice corrosion, and chloride stress-cracking.
- Exceptional Strength: Super Duplex offers roughly twice the yield strength of standard austenitic stainless steels, allowing for thinner, lighter, yet highly robust wall construction.
- Interval de temperatură: Capable of handling extreme temperature variances, usually between -46°C to 300°C depending on the specific design.
- Y-Strainers: Compact and ideal for vertical or horizontal pipelines carrying steam, gas, or liquid. They are best for applications where debris loading is relatively small.
- Basket Strainers: Feature a larger holding capacity for debris, making them ideal for high-flow, heavy-duty applications. They are designed for easy maintenance where the basket can be removed and cleaned without breaking the pipeline.
- Design Standards: Often manufactured to meet ASME B16.34 standards.
- Sizes: Available in a wide range of diameters (typically 2 inches to 24+ inches).
- Pressure Ratings: Common pressure classes include Class 150, 300, 600, and 900 LB.
- End Connections: Available in flanged (RF), butt-weld, or threaded ends to match specific piping systems.
- Strainer Type (Y-Strainer or Basket Strainer)
- Pipe Size și Pressure Class
- Fluid type și Temperatura de Operare
Duplex Stainless Steel ASTM A890 Grade 5A Y Strainer for Seawater, Chemical, and Corrosive Service
The ASTM A890 Grade 5A Strainer, PN10, DN65, RF End is a premium duplex stainless steel filtration device engineered to remove solids, debris, and contaminants from pipelines while protecting pumps, control valves, flow meters, and process equipment. Manufactured from ASTM A890 Grade 5A (UNS J93404 / Duplex Stainless Steel 25Cr-7Ni-4Mo-N), this Y-type strainer combines exceptional corrosion resistance with superior mechanical strength, making it ideal for seawater, offshore, desalination, and chemical processing applications.
Designed in accordance with ASME B16.34, EN 1092-1, and tested according to API 598, the PN10 duplex strainer provides reliable filtration performance and long service life under corrosive and chloride-containing environments.
Product Overview
| Item | Specificație |
|---|---|
| numele produsului | Duplex Stainless Steel Y Strainer |
| Tip | Y-Type Strainer |
| mărimea | DN65 (2½ Inch) |
| Pressure Rating | PN10 |
| Body Material | ASTM A890 Grade 5A |
| Cover Material | ASTM A890 Grade 5A |
| Screen Material | Duplex Stainless Steel 2205 |
| Tipul conexiunii | RF Flanged End |
| Flange Standard | EN 1092-1 PN10 |
| Standard de proiectare | ASME B16.34 |
| Face-to-Face | Manufacturer Standard |
| Inspection & Testing | API 598 |
| Temperature Range | -46°C to 250°C |
| Applicable Media | Seawater, Brine, Chemicals, Oil, Gas, Cooling Water |
What is ASTM A890 Grade 5A?
ASTM A890 Grade 5A is a cast duplex stainless steel equivalent to UNS J93404 and similar to Super Duplex 2507 chemistry. It provides outstanding resistance to pitting, crevice corrosion, stress corrosion cracking, and chloride attack.
Advantages of A890 5A Duplex Stainless Steel
- Excellent resistance to seawater corrosion
- Superior pitting resistance
- High mechanical strength
- Outstanding stress corrosion cracking resistance
- Longer service life than conventional stainless steel
- Excellent erosion resistance
Product Features
High-Efficiency Filtration
The duplex stainless steel screen effectively removes:
- Rust particles
- Sand
- Pipe scale
- Welding slag
- Process contaminants
Protecting downstream equipment and reducing maintenance costs.
RF Flanged End Design
The raised face flange connection offers:
- Reliable sealing performance
- Easy installation and removal
- Compatibility with EN 1092-1 PN10 flanges
- Simplified maintenance procedures
Heavy-Duty Duplex Construction
Compared with 316 stainless steel strainers, ASTM A890 5A provides:
- Twice the yield strength
- Better chloride resistance
- Longer operating life
- Lower lifecycle cost
Easy Maintenance
The bolted cover design allows:
- Quick screen cleaning
- Easy replacement
- Reduced downtime
- Lower operating costs
Specificatii tehnice
Materials of Construction
| Component | Material |
|---|---|
| Corp | ASTM A890 Grade 5A |
| Acoperi | ASTM A890 Grade 5A |
| Screen | Duplex Stainless Steel 2205 |
| Drain Plug | ASTM A182 F51 |
| Garnitură | PTFE / Graphite |
| Stud Bolts | ASTM A193 B8M |
| Nuts | ASTM A194 8M |
Applicable Standards
| Standard | Descriere |
|---|---|
| ASME B16.34 | Valve and Strainer Design |
| EN 1092-1 | PN10 Flange Dimensions |
| API 598 | Inspection and Testing |
| MSS SP-55 | Quality Standard |
| EN 10204 3.1 | Material Certification |
| NORSOK M-630 | Optional |
Working Principle
The Y strainer protects piping systems by trapping contaminants before they reach critical equipment.
Filtration Process
- Fluid enters the inlet.
- Solid particles are captured by the perforated screen.
- Clean media flows to the outlet.
- Debris is periodically removed through the cleanout cover or drain connection.
This ensures stable system performance and prevents equipment damage.
Typical Applications
Seawater Systems
Suitable for:
- Cooling water pipelines
- Offshore platforms
- Marine water systems
- Ballast water treatment
Seawater Filtration Application
Offshore Oil and Gas Industry
Widely used in:
- Produced water systems
- Firewater systems
- Injection water systems
- Utility pipelines
Offshore Application
Desalination Plants
Applied in:
- Reverse osmosis systems
- Seawater intake lines
- Pump protection systems
- Membrane filtration units
Chemical Processing Plants
Ideal for:
- Chloride-containing media
- Acid transfer systems
- Corrosive process fluids
- Cooling circuits
Marine Industry
Used in:
- Ship cooling systems
- Ballast water systems
- Seawater service lines
- Engine protection systems
Advantages of A890 Grade 5A Strainers
| Feature | Benefit |
|---|---|
| Duplex Stainless Steel | Excellent chloride resistance |
| High Strength | Longer service life |
| RF Flanged Ends | Easy installation |
| Replaceable Screen | Simplified maintenance |
| Corrosion Resistance | Reduced downtime |
| Low Lifecycle Cost | Lower operating expenses |
A890 5A vs CF8M (316 Stainless Steel)
| Property | A890 Grade 5A | CF8M (316 SS) |
|---|---|---|
| Yield Strength | Higher | Standard |
| Pitting Resistance | Excellent | Good |
| Seawater Resistance | Superior | Moderate |
| Chloride Stress Corrosion | Excellent | Moderate |
| Service Life | Longer | Standard |
For seawater and aggressive chloride environments, A890 Grade 5A is significantly superior to conventional 316 stainless steel.
Inspection and Testing
Every strainer undergoes rigorous quality assurance procedures:
Hydrostatic Pressure Test
Verifies pressure integrity.
PMI Material Identification
Confirms duplex stainless steel composition.
Dimensional Inspection
Ensures compliance with flange standards.
Screen Inspection
Verifies filtration efficiency.
Optional NDT Examinations
- Ultrasonic Testing (UT)
- Dye Penetrant Testing (PT)
- Ferrite Content Testing
- Positive Material Identification (PMI)
Available Options
Screen Mesh
- 20 Mesh
- 40 Mesh
- 80 Mesh
- 100 Mesh
- Custom Mesh Sizes
Drain Connections
- Threaded Plug
- Ball Valve Drain
- Blow-Off Connection
Certifications
- EN 10204 3.1
- NACE MR0175
- Third-Party Inspection (BV, DNV, SGS, TUV)
Material Alternatives
- ASTM A890 Grade 4A
- ASTM A890 Grade 6A
- ASTM A351 CF8M
- ASTM A995 Gr.4A
- Super Duplex 2507
Frequently Asked Questions
What is ASTM A890 Grade 5A?
A890 Grade 5A is a duplex stainless steel material with excellent resistance to seawater and chloride corrosion.
Is this strainer suitable for seawater service?
Yes. A890 5A is specifically designed for highly corrosive environments such as seawater and offshore applications.
What is the advantage of RF flanges?
Raised face flanges provide reliable sealing and easy maintenance.
Can the mesh size be customized?
Yes. Different perforation sizes and mesh screens are available based on process requirements.
Which industries commonly use A890 5A strainers?
Offshore oil & gas, desalination, marine, chemical processing, and seawater cooling systems.
Request a Quote
China ASTM A890 Grade 5A Duplex Stainless Steel Strainer Manufacturer
We provide:
✅ ASTM A890 Grade 5A Duplex Stainless Steel Solutions
✅ PN10 RF Flanged Y Strainers
✅ Seawater and Offshore Application Expertise
✅ Custom Screen Mesh Configurations
✅ Third-Party Inspection Support
✅ Worldwide Export Experience
Please provide:
- Size (DN65 / 2½ Inch)
- Pressure Rating (PN10)
- Media Type
- Temperatura de Operare
- Mesh Size Requirement
- Quantity Required
Our engineering team will provide a detailed quotation, GA drawing, material certificates, and delivery schedule within 24 hours.
