BS 4504 Stainless Steel Welding Neck Flanges: High-Quality Connections for Diverse Applications
1. Product Description: BS 4504 Stainless Steel Welding Neck Flanges are precision-engineered components used to connect pipes or tubes in various industrial applications. These flanges feature a welding neck, which is designed to be welded to the pipe or vessel for a secure and leak-free connection. Made from stainless steel, they offer excellent corrosion resistance, strength, and durability, suitable for a range of pressures and temperatures.
2. Product Parameters:
Parameter |
Description |
Type |
Welding Neck Flange |
Sizes |
Customizable based on nominal pipe size (NPS) |
Specifications |
As per client requirements or standard dimensions |
Standard |
BS 4504 |
Material |
Stainless Steel (e.g., 304, 316) |
Surface Treatment |
As-manufactured, passivated, or with a protective coating |
3. Mechanical Properties:
Property |
Typical Requirements |
Tensile Strength |
Varies with stainless steel grade, typically above 515 MPa |
Yield Strength |
Typically above 205 MPa |
Elongation |
≥15% for most stainless steel grades |
Hardness |
Varies depending on heat treatment and grade |
4. Pressure Ratings:
Pressure Class |
Description |
PN2.5 |
2.5 bar (36 psi) |
PN6 |
6 bar (87 psi) |
PN10 |
10 bar (145 psi) |
PN16 |
16 bar (232 psi) |
PN25 |
25 bar (362 psi) |
PN40 |
40 bar (580 psi) |
5. Chemical Composition:
Element |
Typical Range (%) for 304 Stainless Steel |
Typical Range (%) for 316 Stainless Steel |
Carbon |
≤0.08 |
≤0.08 |
Chromium |
18.0-20.0 |
16.0-18.0 |
Nickel |
8.0-10.5 |
10.0-14.0 |
Molybdenum |
- |
2.0-3.0 |
6. Product Uses:
- Chemical Processing: Ideal for chemical and petrochemical plants where corrosive fluids are handled.
- Food and Beverage Industry: Suitable for hygienic applications in food processing and beverage production.
- Pharmaceutical Industry: Employed in environments where cleanliness and purity are critical.
- Power Generation: Utilized in power plants for steam and cooling systems.
- Marine and Offshore: Used in marine applications due to their corrosion resistance in saline environments.
7. Product Grade Standards:
- BS 4504: The flanges are manufactured in compliance with the British Standard 4504, which specifies the requirements for steel flanges for pressure purposes.