BS 4504 DN50 PN20 Alloy Steel Male/Female Threaded Flange
BS 4504 DN50 PN20 Alloy Steel Instrumentation & Control Male/Female Threaded Flange | SSM
SSM is a trusted manufacturer and supplier of BS 4504 DN50 PN20 Alloy Steel Threaded Flanges, designed for precise and reliable connections in instrumentation and control systems. These flanges are ideal for applications where high accuracy, corrosion resistance, and mechanical integrity are required.
1. Product Overview
The DN50 PN20 Male and Female Threaded Flanges are used for easy assembly and disassembly of pipelines without welding, making them suitable for instrumentation, control, and monitoring systems.
They ensure secure and leak-proof connections in critical systems handling fluids or gases.
Standard: BS 4504
Size: DN50 (2")
Pressure Rating: PN20
Material: Alloy Steel
Thread Type: Male / Female Threaded (BSPT / NPT)
Applications: Instrumentation, control, chemical, and industrial pipelines
2. Material Composition (Typical Alloy Steel)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.25 – 0.30 |
| Manganese (Mn) | 0.70 – 1.20 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.50 – 1.50 |
| Nickel (Ni) | ≤ 0.50 |
| Iron (Fe) | Balance |
Alloy steel provides high strength, wear resistance, and moderate corrosion resistance, suitable for industrial instrumentation environments.
3. Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 217 HB |
| Service Temperature | -20°C to +400°C |
4. Key Features
✅ Precision Threading: Ensures leak-free connections for instrumentation and control pipelines.
✅ High Mechanical Strength: Resistant to pressure and mechanical stress.
✅ Corrosion Resistance: Suitable for moderate corrosive environments.
✅ Easy Assembly: Male/female design allows quick installation and maintenance.
✅ Versatile Use: Compatible with various industrial fluids and gases.
5. Advantages and Limitations
Advantages:
Simplifies pipeline maintenance and disassembly.
Provides accurate and secure connections in instrumentation systems.
High durability in moderate temperature and pressure environments.
Limitations:
Less suitable for highly corrosive environments without protective coatings.
Not designed for extremely high-pressure applications beyond PN20.
6. Applications
Instrumentation & Control Pipelines
Chemical and Petrochemical Plants
Water Treatment and Metering Systems
HVAC and Industrial Automation
Process Monitoring Systems
7. Why Choose SSM
30+ years of experience in alloy steel flange manufacturing
Certified under ISO 9001 / EN 10204 3.1
Full compliance with BS 4504 standard
Advanced CNC machining and threading capabilities
Fast global delivery and custom design services
8. Conclusion
The BS 4504 DN50 PN20 Alloy Steel Male/Female Threaded Flange from SSM offers precision, durability, and ease of installation for instrumentation and control pipelines.
It is the ideal choice for industries that require secure, high-quality threaded connections.
📩 Contact SSM today for a quotation or custom specifications for your instrumentation flange project.
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