A Socket Weld Flange (SW Flange) is a type of pipe flange designed for small-diameter, high-pressure piping systems. The pipe is inserted into the flange’s socket and welded on the outside, creating a strong and leak-proof connection.
Socket weld flanges are widely used in industries requiring high strength, durability, and corrosion resistance, including oil & gas, chemical processing, power plants, and water treatment facilities. These flanges are typically manufactured using stainless steel grades such as SS 304, SS 316, SS 321, SS 347, SS 310, and SS 904L, ensuring long-lasting performance in harsh environments.
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Socket weld flanges are widely used in industries where high-pressure, high-temperature performance is required, including:
| Specification | Details |
|---|---|
| Material Grade | Stainless Steel 304, 316, 321, 347, 310, 904L |
| Standard | ASTM A182 / ASME SA182 |
| Size Range | ½” to 24” (DN15 to DN600) |
| Pressure Ratings | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Face Type | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
| Connection Type | Socket Weld |
| Temperature Resistance | Suitable for extreme temperature applications |
| Corrosion Resistance | High resistance to rust, pitting, and chemical exposure |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max (varies by grade) |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 16.0 – 21.0 |
| Nickel (Ni) | 8.0 – 28.0 |
| Molybdenum (Mo) | 2.00 – 5.00 (varies by grade) |
| Copper (Cu) | 1.0 – 2.0 (in 904L) |
| Property | Value |
|---|---|
| Tensile Strength | 485 – 590 MPa (varies by grade) |
| Yield Strength | 170 – 300 MPa |
| Elongation | 30 – 40% |
| Hardness (Brinell) | 217 max |
| Hardness (Rockwell B) | 95 max |
| Region | Countries |
|---|---|
| Middle East | UAE, Saudi Arabia, Qatar, Oman, Kuwait, Turkey |
| Asia | India, Singapore, Malaysia, Thailand, Vietnam, South Korea, Japan |
| South America | Argentina, Brazil, Chile, Colombia, Venezuela |
| North America | USA, Canada, Mexico, Panama |
| Europe | UK, Germany, France, Italy, Spain, Netherlands, Russia |
| Africa | Nigeria, South Africa, Egypt, Algeria |
| State | Major Cities |
|---|---|
| Maharashtra | Mumbai, Pune, Nashik, Nagpur |
| Gujarat | Ahmedabad, Surat, Vadodara |
| Tamil Nadu | Chennai |
| Telangana | Hyderabad |
| Karnataka | Bengaluru |
| West Bengal | Kolkata |
| Uttar Pradesh | Kanpur, Noida |
| Andhra Pradesh | Vishakhapatnam, Vijayawada |
| Union Territories | Delhi, Chandigarh |
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