socket welded long radius elbow 1. Material: 304, 304L, 321, 316, 316L, etc. 2. Standard: ASME, MSS, HG, DIN, JIS, GB socket welded long radius elbow Socket welded elbows is a type of socket welded fitting that is unthreaded, but has large sockets at both ends of a pipe. We offer wide range of socket weld 90 degree socket welded elbows. These fittings have center to face dimension and are ...