one side is socket and one is straight pipe. DN:12-100mm, W: 0. ... , JIS, material: SUS304,304L,316,316L Stainless steel/carbon steel welded 45 degree elbow-press fitting1. Material: 304,304L,316, and ... is to be favourate for everyone. Stainless steel/carbon steel welded 45 degree elbow-press fitting