The copper fittings be widely used in the air conditioning, refrigeration and Plumbing system. It focuses on producing two sorts: Welding copper fittings and solder ring copper fittings; Seven series: TEE, ELBOW, COUPLING, STOP END, FITTING REDUCER, TAP CONNECTOR etc. 1. Usage: for plumbing Standard: EN1254-1 Size: 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 22mm, 28mm, 35mm, 42mm, 54mm, 67mm, 76mm, 89mm, 108mm, 159mm, 219mm 2. Usage: for plumbing Standard: ASME B16.22 Size: 1/4'', 1/2'', 3/4'', 1'', 1-1/4'', 1-1/2'', 2'', 2-1/2'', 3'', 4'', 5'', 6'', 8'', 10'' 3. Usage: for refrigeration or air conditioner Standard: ASME B16.22 Size: 1/4'', 3/8'', 1/2'', 5/8'', 7/8'', 1-1/8'', 1-3/8'', 1-5/8'', 1-7/8'', 2-1/8'', 2-5/8'', 3-1/8'', 3-5/8'', 4-1/8'',6-1/8'' For more details please contact with us.