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EN 12735 Seamless, Round Copper Tubes for Air Conditioning and Refrigeration - Dimensions

Dimensions of seamless, round copper tubes for air conditioning and refrigeration piping systems.

Dimensions of copper tubes according EN 12735 Copper and copper alloys. Seamless, round copper tubes for air conditioning and refrigeration. Tubes for piping systems:

EN 12735 Seamless, Round Copper Tubes for Air Conditioning and Refrigeration - Dimensions
Nominal Outside Diameter
- d -		Nominal Wall Thickness - e - (mm)
Metric SeriesImperial Series
(mm)(mm)(in)0.81.01.251.51.652.02.5
3.18 1/8 C
3.97 5/32 C C
4.76 3/16 C
6 S, C C
6.35 1/4 C C
7.94 5/16 C C
8 S, C C
9.52 3/8 C C
10 S, C S, C
12 S, C
12.7 1/2 C S, C
15 S, C
15.87 5/8 S, C
18 S, C
19.06 3/4 C S
22 S, C
22.3 7/8 C S
25.4 1 S
28 S
28.57 1 1/8 S S
34.92 1 3/8 S
35 S
41.27 1 5/8 S
42 S
53.97 2 1/8 S S
54 S
64 S
66.67 2 5/8 S S S
76.1 S
79.37 3 1/8 S S
88.90 3 1/2 S
92.07 3 5/8 S S
104.80 4 1/8 S S
108 S

•Recommended

  • S - available in straight lengths
  • C - available in coils
  • 1 inch = 25.4 mm

Example - Designation of EN 12735 Copper Tube

  • Copper tube EN 12735 R290 15×1.0

where R290 is material temper.

Material Temper

EN 12735 Seamless, Round Copper Tubes for Air Conditioning and Refrigeration - Material Temper
Material TemperTensile StrengthElongation min.Vickers Hardness
DesignationCommonly used term(MPa)(%)HV5
R220 annealed, soft 40 40 - 70
R250 half hard 250 30 75 - 100
R290 hard 290 3 over 100

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