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1.1 ,This specification establishes the requirements for bright annealed seamless copper tube suitable for use in refrigeration, oil lines, gasoline lines, and so forth, where tube with an interior surface essentially free from scale and dirt is required.
1.1.1 ,Tubes made from any of the following Copper UNS No. designations shall be supplied, unless otherwise specified in the contract or purchase order:
| Copper UNS No.2 | Type of Copper |
| , | , |
| C10200 | Oxygen-free |
| C10300 | Oxygen-free, (OFXLP) |
| C10800 | Oxygen-free, (OFLP) |
| C12000 | Phosphorus deoxidized, low residual phosphorus |
| C12200 | Phosphorus deoxidized, high residual phosphorus |