When laying pipes and wiring, encountering nodes or making a 45° turn at the corner of a wall, connect/dock the two ends of grooved pipe materials with the same nominal diameter.
When arranging piping and encountering nodes or making a 90° turn at wall corners, connect/join both ends of grooved pipe materials with the same nominal diameter.
Specification of 90 Degree Elbow Stainless Steel Grooved Fittings.