It is a type of flange that is connected with the pipe by only one filled weld from outside. This flange is not made for severe conditions. The thickness of the pipe is important for the correct dimension of the bore of this flange. There must be a proper gap between the socket weld flange and pipe as this gap can give corrosion problems. These are especially found in stainless steel pipes. The static strength of socket weld flanges is similar to slip-on flanges, but their fatigue strength is higher due to the presence of a single, instead of double, fillet weld.
Socket Weld fittings are mainly used for small pipe diameters (Small Bore Piping); generally, for piping whose nominal diameter is NPS 2 or smaller. Socket weld flanges are widely used in high-temperature systems such as hydraulic equipment and steam lines. As a simple design, socket weld pipes are attached by inserting a pipe into the socket end and applying a fillet weld around the hub of the socket weld flange. This allows a smooth flow of fluid through the pipe. In case of high stress, an internal weld can also be applied.
- Power generation
- Petrochemical plants
- Pharmaceutical plants
- Oil refineries
- Wastewater treatment plants
- Paper mills
- Well suited for small-size applications.
- Simple design
- Suitable for non- hazardous systems.
Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Size : 1/2″ (15 NB) to 48″ (1200NB)
Class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629,
DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS : BS4504 , BS4504, BS1560, BS10
Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Material & Grades of Socket weld Flanges (SWRF) :
Stainless Steel Socket weld Flanges :
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel Socket weld Flanges :
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel Socket weld Flanges :
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Low-Temperature Carbon Steel Socket weld Flanges: ASTM A350, LF2, LF3
Alloy Steel Socket weld Flanges :
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Copper Alloy Steel Socket weld Flanges: ASTM SB 61, SB62, B151, SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Socket weld Flanges : ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020