PITTING RESISTANT COPPER OR COPPER ALLOY TUBE

摘要

PROBLEM TO BE SOLVED: To provide pitting resistant copper or copper alloy tube having a low carbon adhesion which dispenses with changing inter-intrusion or drawing stages of large-sized equipment, is low in running cost and is capable of preventing corrosion resistance trouble due to the residual carbon in a copper pipe. SOLUTION: Drawing is executed by using a lubricating oil containing polybutene of >=150 to <10000 cSt in dynamic viscosity at 40 deg.C and <0.00119 in [I] at 740 cm-1 in the wave number based on a -(CH2)n- group when the IR absorption luminosity by an IR total reflection absorption method is defined as [I] in part or the entire stage of the drawing stage. The carbon quantity remaining in the tube after the tube is subjected to continuous annealing by induction heating is <=0.05 mg/dm2. Further, 3 to 13C alcohol is added as <30% to the lubricating oil and this alcohol is the alcohol of at least one selected from the group consisting of octyl alcohol and/or nonyl alcohol.