Copper Plumbing Tube

Nippon copper plumbing tubes are reliable, leak proof, durable and have very low maintenance thus are cost saving and advantageous. Nippon plumbing pipes resist corrosion, installer friendly and require no threading. Plumbing tubes are offered in various different standards and customised specifications.

The BS 2871 specifies 3 wall thickness suitable for hot and cold water installations under Table X, Y & Z. Table ‘X’ is the table normally used for plumbing and gas. Tubes are 100% eddy current tested. Mechanical and chemical properties meet the standards of BS 2871, Part 1:1971 or the EN:1057. Tube sizes range from 12 mm to 159 mm. The standard plumbing sizes are (in mm): 15, 22, 28, 35, 42, 54, 66.7, 76.1, 108, 133 & 159. These include types K, L, M and DWV. All tubes supplied to these ASTM standards are a minimum of 99.90 percent pure copper.

 

These classes and types of tubes are commercially available in the tempers and lengths described in the Plumbing tube product range chart. Types K, L, M and DWV are designated by ASTM standard size, with outside diameter always 1/8″ larger than the standard size. Each type (K, L, M and DWV) represents a series of sizes with different wall thicknesses. The inside diameter depends on tube size and wall-thicknesses.

All four types are available in drawn temper straight lengths 20 feet long. Type K, L and M are available also in annealed temper in 8 feet straight lengths or in long coils in sizes from 1/4 inch to 7/8 inch. We, in India, manufacture plumbing tubes to meet specifications established by the American Society for Testing and Materials (ASTM).

Technical Specification

Nominal or Standard Size, in. Outside Diameter, in. Average Outside Diameter A Tolerance,in Wall Thickness and Tolerances, in. Theoretical Weight,lb/ft
Type K Type L Type M
Annealed Drawn Wall Tolerance B Wall Tolerance B Wall Tolerance B Type K Type L Type M
Thick-ness Thick-ness Thick-ness
¼ 0.375 0.002 0.001 0.035 0.0035 0.03 0.003 c c 0.145 0.126 c
⅜ 0.5 0.0025 0.001 0.049 0.005 0.035 0.004 0.025 0.002 0.269 0.198 0.145
½ 0.625 0.0025 0.001 0.049 0.005 0.04 0.004 0.028 0.003 0.344 0.285 0.204
⅝ 0.75 0.0025 0.001 0.049 0.005 0.042 0.004 c c 0.418 0.362 c
¾ 0.875 0.003 0.001 0.065 0.006 0.045 0.004 0.032 0.003 0.641 0.455 0.328
1 1.125 0.0035 0.0015 0.065 0.006 0.05 0.005 0.035 0.004 0.839 0,655 0.465
1¼ 1.375 0.004 0.0015 0.065 0.006 0.055 0.006 0.042 0.004 1.04 0.884 0.682
1½ 1.625 0.0045 0.002 0.072 0.007 0.06 0.006 0.049 0.005 1.36 1.14 0.94
2 2.125 0.005 0.002 0.083 0.008 0.07 0.007 0.058 0.006 2.06 1.75 1.46
2½ 2.625 0.005 0.002 0.095 0.01 0.08 0.008 0.065 0.006 2.93 2.48 2.03
3 3.125 0.005 0.002 0.109 0.011 0.09 0.009 0.072 0.007 4 3.33 2.68
3½ 3.625 0.005 0.002 0.12 0.012 0.1 0.01 0.083 0.008 5.12 4.29 3.58
4 4.125 0.005 0.002 0.134 0.013 0.11 0.011 0.095 0.01 6.51 5.38 4.66
5 5.125 0.005 0.002 0.16 0.016 0.125 0.012 0.109 0.011 9.67 7.61 6.66
6 6.125 0.005 0.002 0.192 0.019 0.14 0.014 0.122 0.012 13.9 10.2 8.92
8 8.125 0.006 0.002 0.271 0.027 0.2 0.02 0.17 0.017 25.9 19.3 16.5
-0.004
10 10.125 0.008 0.002 0.338 0.034 0.25 0.025 0.212 0.021 40.3 30.1 25.6
-0.006
12 12.125 0.008 0.002 0.405 0.04 0.28 0.028 0.254 0.025 57.8 40.4 36.7
-0.006

Copper Tubes are specified in the BS 2871 / EN 1057 in three wall thicknesses designated under Table X, Y & Z. As per the specification the wall thicknesses recommended & the calculated working & burst pressures are given below:

TABLE ‘X’
Tube Size Outer Dia. Thickness Inner Dia. Calculated Burst Pressure Maximum Working Pressure
max. min.
mm mm mm mm mm bar PSI bar PSI
15 15.045 14.965 0.7 13.6 240 3480 58 841
22 22.055 21.975 0.9 20.2 215 3117.5 51 739.5
28 28.055 27.975 0.9 26.2 165 2392.5 40 580
35 35.07 34.99 1.2 32.6 175 2537.5 42 609
42 42.07 41.99 1.2 39.6 145 2102.5 35 507.5
54 54.07 53.99 1.2 51.6 110 1595 27 391.5
67 66.75 66.6 1.2 64.6 105 1522.5 20 290
76.1 76.3 76.15 1.5 73.1 100 1450 24 348
108 108.25 108 1.5 105 70 1015 17 246.5

 

TABLE ‘Y’
Tube Size Outer Dia. Thickness Inner Dia. Calculated Burst Pressure Maximum Working Pressure
max. min.
mm mm mm mm mm bar PSI bar PSI
15 15.045 14.965 1 13 360 5220 87 1261.5
22 22.055 21.975 1.2 19.6 290 4205 69 1000.5
28 28.055 27.975 1.2 25.6 230 3335 55 797.5
35 35.07 34.99 1.5 32 225 3262.5 54 783
42 42.07 41.99 1.5 39 190 2755 45 652.5
54 54.07 53.99 2 50 195 2827.5 47 681.5
67 66.75 66.6 2 63 157 2276.5 37 536.5
76.1 76.3 76.15 2 72.1 140 2030 33 478.5
108 108.25 108 2.5 103 120 1740 29 420.5

 

TABLE ‘Z’
Tube Size Outer Dia. Thickness Inner Dia. Calculated Burst Pressure Maximum Working Pressure
max. min.
mm mm mm mm mm bar PSI bar PSI
15 15.045 14.965 0.5 14 260 3770 50 725
22 22.055 21.975 0.6 20.8 215 3117.5 41 594.5
28 28.055 27.975 0.6 26.8 165 2392.5 32 464
35 35.07 34.99 0.7 33.6 155 2247.5 30 435
42 42.07 41.99 0.8 40.6 145 2102.5 28 406
54 54.07 53.99 0.9 52.2 130 1885 25 362.5
67 66.75 66.6 1 65 120 1740 20 290
76.1 76.3 76.15 1.2 73.7 80 1160 19 275.5
108 108.25 108 1.2 105.6 75 1087.5 17 246.5
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Tube Division

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