ASTM B188-15e1

Condition: New product

Standard Specification for Seamless Copper Bus Pipe and Tube

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 be made from one of the following coppers, as denoted in the ordering information:2

Copper UNS No.2	Previously Used Designation	Type of Copper

C10100	OFE	Oxygen-free, electronic
C10200	OF	Oxygen-free without residual deoxidants
C10300	—	Oxygen-free, extra low phosphorus
C10400, C10500, C10700	OFS	Oxygen-free, silver bearing
C11000	ETP	Electrolytic tough pitch
C11300, C11400, C11600	STP	Silver-bearing tough pitch
C12000	DLP	Phosphorized, low residual phosphorus