Nishra Overseas LLP offers a wide selection of SWRF Flanges both nationally and globally. We have years of manufacturing and exporting expertise, and we strive for constant improvement to provide the highest caliber of products. Modern technology and the newest tools are used to mold the product to the required standard and specifications. On request, specifications such as thickness, kind, finish, length, and dimension can be changed. As a result, socket welding For usage on small sizes of superior pressure pipes, flanges were developed. Socket weld flanges are more durable and have greater fatigue power than slip-on flanges that are doubly welded thanks to an internal weld.
The second most type of fitting used to join piping equipment is flanges. They can also be exercised in dismantling. It offers maintenance flexibility. Flanges connect equipment and valves. They are added in the mainline system during plant operation if maintained regularly.
A single fillet on the outside was used to connect them to pipes. First, they are placed into the flange's socket, then they are raised and finally welded. The gap is raised for correct placement once the weld has solidified. Small-sized, high-pressure pipes that don't carry corrosive fluids are the primary applications for it.
Socket Weld Flange suppliers, exporters, and distributors in Mumbai are known for their high quality products and on-time delivery. These are the best option in terms of quality and service because they offer a range of customization options for socket weld flanges to meet customer requirements and standards. These are the flanges that are most in-demand for machining. A variety of items that can be tailored to meet your demands are available from Mumbai-based socket weld flange suppliers and exporters. These have a range of flanges and flange parts that are long-lasting and composed of premium materials.
We are a Stainless Steel Socket Weld Flange manufacturer in India, and we offer these Inconel Socket Weld Flange, Hastelloy Socket Weld Flange, Monel Socket Weld Flange, Alloy 20 Socket Weld Flange, Aluminium Socket Weld Flange, Nickel Socket Weld Flange, Duplex Socket Weld Flange, Super Duplex Socket Weld Flange, Incoloy Socket Weld Flange, Copper Socket Weld Flange, Copper Nickel Socket Weld Flange, Brass Socket Weld Flange, 254 Smo Socket Weld Flange, and Titanium Socket Weld Flange in all standards that are common in the world.
| Size | 1/2" (15 NB) to 48" (1200NB) |
| Standards | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
| Pressure Ratings | Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Carbon Steel Slip On Flanges/ SORF Flanges | ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8 |
| Stainless Steel Slip On Flanges/ SORF Flanges | ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L |
| Alloy Steel Slip On Flanges/ SORF Flanges | ASTM A182 F1, F5, F9, F11, F22, F91 |
| Special Alloy Slip On Flanges/ SORF Flanges | Duplex, Super Duplex, Nickel Alloys |
| Flange Type | Forged / Threaded / Screwed / Plate |
| Coating/Surface Treatment | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Socket Weld Flange |
| Value Added Services | CNC Machining, Customised Flanges |
| Class | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| Diameter - A | 30 | 38 | ... | 38 | ... | 38 | ... |
| Diameter - D | 90 | 95 | ... | 95 | ... | 120 | ... |
| Thickness - B | 9.6 | 12.7 | ... | 14.3 | ... | 22.3 | ... |
| 11.2 | 14.3 | ... | 20.7 | ... | 28.7 | ... | |
| Diameter - G | 35.1 | 35.1 | ... | 35.1 | ... | 35.1 | ... |
| Diameter - K | 60.3 | 66.7 | ... | 66.7 | ... | 82.6 | ... |
| Height - H | 14 | 21 | ... | 22 | ... | 32 | ... |
| 15.6 | 22.6 | ... | 28.4 | ... | 38.4 | ... | |
| Bolt Holes | 4 | 4 | ... | 4 | ... | 4 | ... |
| Diameter - L | 15.9 | 15.9 | ... | 15.9 | ... | 22.2 | ... |
| Stud Bolts Diameter x Length | |||||||
| Diameter (in) | 1/2 | 1/2 | ... | 1/2 | ... | 3/4 | ... |
| Length (mm) | 55 | 65 | ... | 75 | ... | 110 | ... |
| Outside Diameter ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm |
Inside Diameter ≤ 10 = ± 0.8 mm | ≥ 12 = + 1.6 mm / - 0 mm |
| Diameter of Contact Face 1.6 mm Raised Face = ± 0.8 mm 6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm |
Outside Diameter of Hub ≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm |
| Diameter of Counterbore Same as for Inside Diameter |
Drilling Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm Eccentricity of Bolt Circle with Respect to Facing ≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max. |
| Thickness ≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0 |
Length thru Hub ≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm |
SWRF Flanges are widely utilized in high-pressure piping systems, including chemical processing, petrochemical refining, oil and gas, and power production. These flanges effectively connect pipes to valves, fittings, and equipment while maintaining high dependability and safety. Socket weld flanges are sometimes employed in small-bore piping systems with high pressures and temperatures, such as steam, air, water, and gas pipes.
One advantage of employing SWRF Flanges is that they produce a permanent and reliable seal. They can readily fit into narrow areas where flange welding is difficult. The socket weld flange is also structurally sound, as it can tolerate tremendous vibration, pressure, and temperature changes. They are also easier to process than other flanges and offer low-cost alternatives for high-pressure pipe systems.
| Oil and Gas Processing | Dairy and Food Processing |
| Desalination | Pesticides |
| Pulp and Paper | Sugar Factory |
| Energy industries | Power Plants |
| Ship Building | Fertilizers |
| Machine Building | Nuclear |
| Pharmaceuticals | Chemicals |
| Textile Machinery | Synthetic Fibers |
| Construction | Modern Architecture |
| Refinery & Petrochemicals | Water treatment facilities |
Every Standards have clearly requirements for steel flanges’ marking style, usually the marking words include seller’s Logo, buyer’s Logo (OEM), standard number, flange’s type, flange’s pressure, flange’s size, flange’s material, place of origin, heat number and other words for convenient to trace. If the flanges repaired by welding, it must mark on flanges showing this flange repared by welding. If the flange’s dimensions (OD, ID, PCD, Thickness, Holes number, Holes diameter, Tolerance etc) are different with the normal standard, it also must mark on flanges where it is different with normal ones. Another important place is heat number marking, it is the tracing base for every piece flange, and from the heat number we can trace to the beginning of raw material import.
Carbon Steel SWRF Flanges and Stainless Steel Socket Weld Flanges are delivered with or without surface protection, as determined by the manufacturer.
The company delivers SWRF Flanges in standard packaging, without surface protection or end protectors (caps). Special packaging, protective covers, and end protectors (caps) can be agreed upon.