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1.1 This specification establishes the requirements for seamless copper bus pipe and tube intended for use as electrical conductors.

1.1.1 The product shall normally be made from one of the following coppers, as denoted in the ordering information:

PreviouslyCopperUsed Desig-UNS No.nation Type of Copper C10100 OFE Oxygen-free, electronic C10200 OFOxygen-free without residual deoxidantsC10300 -Oxygen-free, extra low phosphorusC10400, C10500,C10700OFS Oxygen-free, silver bearingC11000 ETPElectrolytic tough pitchC11300, C11400,C11600STP Silver-bearing tough pitchC12000 DLPPhosphorized, low residual phosphorus

1.2 Other coppers may be agreed upon between purchaser and supplier. Unless otherwise specified, any one of the above coppers may be furnished.

1.3 The values stated in inch-pound units are the standard. The values given in parentheses are for information only.