For purposes of determining compliance with the specified limits for requirements of the properties listed in Table 8, an observed value or calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
TABLE 8 Rounding Units
| Property | Rounded Unit for Observed or Calculated Value |
|---|---|
| Chemical composition Hardness | nearest unit in the last right-hand place of figures of the specified limit |
| Tensile strength | nearest 5 MPa |
| Expansion | nearest 1 % |
| Grain size: | |
| Up to 0.055 mm, incl | nearest multiple of 0.005 mm |
| Over 0.055 to 0.160 mm, incl | nearest 0.01 mm |
1.1 This specification covers seamless copper water tube suitable for general plumbing, similar applications for the conveyance of fluids, and commonly used with solder, flared, or compression-type fittings. The type of copper water tube suitable for any particular application is determined by the internal or external fluid pressure, by the installation and service conditions, and by local requirements. Means of joining or bending are also factors that affect the selection of the type of tube to be used.
Note 18212;Annealed tube is suitable for use with flared or compression fittings, and with solder-type fittings, provided rounding and sizing of the tube ends is performed where needed.
Note 28212;Drawn temper tube is suitable for use with solder-type fittings. Types A and B tube, in the drawn temper, are suitable for use with certain types and sizes of compression fittings.
Note 38212;This specification is the metric companion of Specification B88.
1.2 The tube shall be produced from the following coppers, and the manufacturer has the option to supply any one of them, unless otherwise specified:
| Copper UNS No. | Previously Used Designation | Description |
| C10200 | OF | Oxygen free without residual deoxidants |
| C12000 | DLP | Phosphorus deoxidized, low residual phosphorus |
| C12200 | DHP | Phosphorus deoxidized, high residual phosphorus |
1.3 The assembly of copper plumbing or fire sprinkler systems by soldering is described in Practice