Side Open Copper Return Bends 1. 1/4" - 1/2" TP2 2. ROHS, SGS ... fitting, connecting fitting, a/c fitting, air conditioner fitting, copper return bend, u bend, y bend, copper tripod, cu u bend ... the section is ≤ ±0.15mm. The surface is processed with non-chromium, oxdization and the performace of welding is fine.