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Copper Tubes Type K - Dimensions and Physical Characteristics

Physical characteristics of copper tubes ASTM B 88 type K.

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Type K is a thick walled, flexible copper tubing - much thicker walls than Type L and M. Type K is required for underground installations and is used for water services, plumbing, heating, steam, gas and oxygen, oil and other applications where thick walled tubes are required. Type K copper tubing can be used with sweat, flared and compression fittings. Type K are available as hard and soft copper tubes.

Physical characteristics and data about copper pipes type K:

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Dimensions and Physical Characteristics of Copper Tube TYPE K
Nominal
or
standard
size
(inches)		Nominal dimensions (inches) Calculated values (based on nominal dimensions)
Outside
diameter		Inside
diameter		Wall
thickness		Cross
sectional
area of
bore
(square inches)		Weight
of tube
only
(lb/ft)
Weight
of tube &
water
(lb/ft)
Volume Contents of tube
(per linear foot)
Cubic feetGallon
1/4 0.375 0.305 0.035 0.073 0.133 0.177 0.00051 0.00379
3/8 0.500 0.402 0.049 0.127 0.269 0.324 0.00088 0.00660
1/2 0.625 0.527 0.049 0.218 0.344 0.438 0.00151 0.0113
5/8 0.750 0.652 0.049 0.334 0.418 0.562 0.00232 0.0174
3/4 0.875 0.745 0.065 0.436 0.641 0.829 0.00303 0.0227
1 1.125 0.995 0.065 0.778 0.837 1.18 0.00540 0.0404
1-1/4 1.375 1.245 0.065 1.22 1.04 1.57 0.00847 0.0634
1-1/2 1.625 1.481 0.072 1.72 1.36 2.10 0.0119 0.0894
2 2.125 1.959 0.083 3.01 2.06 3.36 0.0209 0.156
2-1/2 2.625 2.435 0.095 4.66 2.92 4.94 0.0324 0.242
3 3.125 2.907 0.109 6.64 4.00 6.87 0.0461 0.345
3-1/2 3.625 3.385 0.120 9.00 5.12 9.01 0.0625 0.468
4 4.125 3.857 0.134 11.7 6.51 11.6 0.0813 0.608
5 5.125 4.805 0.160 18.1 9.67 17.5 0.126 0.940
6 6.125 5.741 0.192 25.9 13.9 25.1 0.180 1.35
8 8.125 7.583 0.271 45.2 25.9 45.4 0.314 2.35
10 10.125 9.449 0.338 70.1 40.3 70.6 0.487 3.64
12 12.125 11.315 0.405 101 57.8 101 0.701 5.25
  • 1 in2 = 645 mm2
  • 1 Gallon (U.S.) = 3.785x10-3 m3 = 3.785 dm3 (liter)
  • 1 lbm = 0.4536 kg
  • 1 ft (foot) = 0.3048 m

Copper tube type K - weight with or without water

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