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 ... direction in piping and are also sometimes called a quarter bend.1. Material: 304, 304L, 321, 316, 316L, etc.2. Standard ...