SOCKET WELD FLANGE
Offered by our American Alloy Flange Division
Socket Weld flanges were initially developed for use on small-size high pressure piping. Their static strength is equal to Slip On flanges, but their fatigue strength 50% greater than double-welded Slip On flanges. The connection with the pipe is done with 1 fillet weld, at the outside of the flange. But before welding, a space must be created between flange or fitting and pipe.
ASME B31.1 1998 127.3 Preparation for Welding (E) Socket Weld Assembly says:
In assembly of the joint before welding, the pipe or tube shall be inserted into the socket to the maximum depth and then withdrawn approximately 1/16″ (1.6 mm) away from contact between the end of the pipe and the shoulder of the socket. The purpose for the bottoming clearance in a Socket Weld is usually to reduce the residual stress at the root of the weld that could occur during solidification of the weld metal. The disadvantage of this flange is right the gap, that must be made. By corrosive products, and mainly in stainless steel pipe systems, the crack between pipe and flange can give corrosion problems. In some processes this flange is also not allowed.. Also for this flange counts, that principle always firstly a pipe must be welded and then just a fitting.
American Alloy Flage offers custom manufactured socket weld flanges from ½” up in most alloys.
For a complete list of alloys available for immediate production, please visit our alloys page.
systems such as hydraulic and steam lines.
- B16.5 / B16.47
- ½” – 12″
- 150# – 2500#
- 12″ and larger available per customer specifications
PRIMARY ALLOYS AVAILABLE
- Hastelloy – C276, B3, C22, C-2000, G-30, 230
- Alloy 20, 200/201, 400, 600, 601, 625, 800HT, 825
- AL6XN (N08367), 904L, 310, 317L, 321, 347
- Duplex Stainless – 2205, 2507, 255
- Titanium – Grades 2, 7, and 12
- Aluminum Grades – 1100, 3003, 6061 and 5083
- Chromes-Moly – F-5, F-9, F-11 and F-22
Other material available upon request
841 E WILMINGTON AVE
SALT LAKE CITY, UTAH 84106 USA