ASTM B 280 Copper Tube - ACR

Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service - ACR

Seamless copper tube according ASTM B 280 – Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service - is intended for use in the connection, repairs, or alternations of air conditioning or refrigeration units in the field.

AC/R Copper Tubes is used in the Air Conditioning and Refrigeration Field Service Industry and is designated by the tube's actual OD. B 280 tube is produced in straight lengths or coils.

Nominal Size
(inches)
Annealed (A) or Drawn Temper (D) Outside Diameter
(inches)
Inside Diameter
(inches)
Wall Thickness
(inches)
Cross Sectional Area of Bore
(square inches)
1/8 A 0.125 0.065 0.030 0.0033
3/16 A 0.187 0.128 0.030 0.0129
1/4 A 0.250 0.190 0.030 0.0284
5/16 A 0.312 0.248 0.032 0.0483
3/8 A 0.375 0.311 0.032 0.076
D 0.375 0.315 0.030 0.078
1/2 A 0.500 0.436 0.032 0.149
D 0.500 0.430 0.035 0.145
5/8 A 0.625 0.555 0.035 0.242
D 0.625 0.545 0.040 0.233
3/4 A 0.750 0.680 0.035 0.363
A 0.750 0.666 0.042 0.348
D 0.750 0.666 0.042 0.348
7/8 A 0.875 0.785 0.045 0.484
D 0.875 0.785 0.045 0.484
1 1/8 A 1.125 1.025 0.050 0.825
D 1.125 1.025 0.050 0.825
1 3/8 A 1.375 1.265 0.055 1.26
D 1.375 1.265 0.055 1.26
  • drawn temper - also called "hard" or "rigid"
  • annealed temper - also called "soft" or "flexible"

Related Topics

  • Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort
  • Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more

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