Medical Grade Copper Pipes

Medical Grade Copper Pipes

Indigo Metalloys pressurized ACR/Med copper tubing is available in 10,12, and 20 ft. lengths, and a variety of sizes, both Type L and Type K.

Each product conforms to ASTM B-280/B-819 specifications, is specially cleaned, de-burred, purged and pressurized with nitrogen gas, and features easy to remove, installer friendly, rubber plugs.

Indigo Metalloys uses modern and environment friendly aqueous degreasing system to achieve the ASTM B 280 cleanliness limit of less than 0.0035 g/sq. ft on interior surfaces.

Particularization should be given to:

  1. Site Cleaning of tubes and components.
  2. Pipeline gas purging during brazing.
  3. Use of approved filler metals and fluxes.
  4. Post brazing cleaning and visual inspection of all joints.
  5. Full compliance with pressure and containment testing, before final approval and use.

SPECIFICATION
Actual tube size Safe Working Pressure (kPa)
OD OD Wall Nominal Service Temperature(0C)
    Thickness tube
(inches) (mm) (mm) mass 50 55 60 65 70 75
      (kg/6m)  
3/16" 4.76 0.71 0.48 12715 12280 11845 11410 10980 10545
1/4" 6.35 0.71 0.68 9175 8860 8550 8235 7920 7610
6.35 0.81 0.76 10635 10270 9910 9545 9180 8820
6.35 0.91 0.83 12140 11730 11315 10900 10485 10070
5/16" 7.94 0.81 0.97 8290 8005 7725 7440 7160 6875
7.94 0.91 1.08 9430 9110 8790 8465 8145 7820
3/8" 9.52 0.71 1.05 5900 5700 5495 5295 5095 4895
9.52 0.81 1.19 6800 6570 6335 6105 5870 5640
9.52 0.91 1.32 7720 7455 7190 6930 6665 6400
½" 12.7 0.71 1.44 4345 4195 4050 3900 3750 3605
12.7 0.81 1.62 4995 4825 4655 4480 4310 4140
12.7 0.91 1.81 5655 5460 5270 5075 4880 4685
5/8" 15.88 0.81 2.06 3945 3810 3675 3540 3405 3270
15.88 0.91 2.3 4460 4310 4155 4000 3850 3700
15.88 1.02 2.56 5030 4860 4690 4515 4345 4170
3/4" 19.05 0.91 2.78 3600 3475 3355 3230 3110 2985
19.05 1.02 3.1 4150 4010 3230 3725 3585 3445
19.05 1.14 3.44 4670 4510 4350 4190 4030 3870
7/8" 22.22 0.91 3.27 3140 3030 2925 2815 2710 2600
22.22 1.22 4.32 4265 4120 3970 3830 3680 3535
22.22 1.4 4.91 4930 4760 4595 4425 4255 4090
22.22 1.63 5.66 5795 5600 5400 5205 5005 4805
1" 25.4 0.91 3.76 2730 2640 2545 2450 2360 2265
25.4 1.22 4.97 3705 3580 3450 3525 3200 3070
25.4 1.63 6.53 5025 4855 4685 4510 4340 4170
1/8" 28.58 0.91 4.25 2420 2335 2255 2170 2090 2005
28.58 1.22 5.63 3275 3165 3050 2940 2830 2715
28.58 1.63 7.41 4435 4285 4135 3980 3830 3680
28.58 1.83 8.25 5015 4845 4670 4500 4330 4160
1.1/4" 31.75 0.91 4.73 2170 2095 2025 1950 1875 1800
31.75 1.22 6.28 2935 2835 2735 2635 2535 2435
31.75 2.03 10.17 5005 4835 4665 4495 4325 4150
1 3/8" 34.92 0.91 5.22 1970 1900 1835 1770 1700 1635
34.92 1.22 6.93 2660 2570 2480 2390 2300 2210
34.92 2.03 11.26 4525 4370 4220 4065 3910 3755
1½" 38.1 1.22 7.59 2435 2350 2265 2185 2100 2020
38.1 2.29 13.83 4690 4530 4370 4210 4050 3890
1 5/8" 41.28 0.91 6.19 1660 1605 1545 1490 1435 1375
41.28 1.22 8.24 2240 2165 2090 2010 1935 1860
41.28 2.41 15.79 4550 4390 4235 4080 3925 3770

Safety standards for oxygen and other positive-pressure medical gases require the use of Type K or L copper tube (see ASTM B 819). Special cleanliness requirements are called for because oxygen under pressure may cause the spontaneous combustion of some organic oils (the residual of lubricating oil used during manufacture) and for the safety of patients receiving medical gases.

Copper tube for medical gas lines is furnished by the manufacturers suitably cleaned and capped or plugged. Care must be taken to prevent contamination of the system when the caps or plugs are removed and tube is installed. The installer must satisfy himself and the inspection department that the cleanliness requirements of the code have been met.

Dimensions and Physical Characteristics of Copper Tube: Medical Gas, K and L

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, sq. inches Internal surface, sq. ft. per linear ft. Weight of Tube only, pounds per linear ft. Contents of tube, cu. ft. per linear ft
42461 K 0.375 0.305 0.035 0.073 0.0789 0.145 0.00051
L 0.375 0.315 0.03 0.078 0.0825 0.126 0.00054
42585 K 0.5 0.402 0.049 0.127 0.105 0.269 0.00088
L 0.5 0.43 0.035 0.145 0.113 0.198 0.00101
42401 K 0.625 0.527 0.049 0.218 0.13 0.344 0.00151
L 0.625 0.545 0.04 0.233 0.143 0.285 0.00162
42587 K 0.75 0.652 0.049 0.334 0.171 0.418 0.00232
L 0.75 0.666 0.042 0.348 0.174 0.362 0.00242
42463 K 0.875 0.745 0.065 0.436 0.195 0.641 0.00303
L 0.875 0.785 0.045 0.484 0.206 0.455 0.00336
1 K 1.125 0.995 0.065 0.778 0.261 0.839 0.0054
L 1.125 1.025 0.05 0.825 0.268 0.655 0.00573
37987 K 1.375 1.245 0.065 1.222 0.326 1.04 0.00845
L 1.375 1.265 0.055 1.26 0.331 0.884 0.00873
37257 K 1.625 1.481 0.072 1.72 0.388 1.36 0.012
L 1.625 1.505 0.06 1.78 0.394 1.14 0.0124
2 K 2.125 1.959 0.083 3.01 0.522 2.06 0.0209
L 2.125 1.985 0.07 3.09 0.52 1.75 0.0215
37258 K 2.625 2.435 0.095 4.66 0.638 2.93 0.0323
L 2.625 2.465 0.08 4.77 0.645 2.48 0.0331
3 K 3.125 2.907 0.109 6.64 0.761 4 0.0461
L 3.125 2.945 0.09 6.81 0.761 3.33 0.0473
37259 K 3.625 3.385 0.12 9 0.886 5.12 0.0625
L 3.625 3.425 0.1 9.21 0.897 4.29 0.064
4 K 4.125 3.857 0.134 11.7 1.01 6.51 0.0811
L 4.125 3.905 0.11 12 1.02 5.38 0.0832
5 K 5.125 4.805 0.16 18.1 1.26 9.67 0.126
L 5.125 4.875 0.125 18.7 1.28 7.61 0.13
6 K 6.125 5.741 0.192 25.9 1.5 13.9 0.18
L 6.125 5.854 0.14 26.8 1.53 10.2 0.186
8 K 8.125 7.583 0.271 45.2 1.99 25.9 0.314
L 8.125 7.725 0.2 46.9 2.02 19.3 0.325

Product Divisions