1.1 ,This specification2 covers welded pipe of nickel and nickel-cobalt alloys (UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10624, UNS N10629, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N06975, UNS N08320, UNS N06002, UNS N06022, UNS N06035, UNS N06044, UNS N06058, UNS N06059, UNS N06200, UNS N06235, UNS N10362, UNS N06985, UNS N06030, UNS R30556, UNS N08031, UNS N08034, UNS N06230, UNS N06686, UNS N06210, and UNS R20033)3 as shown in Table 1.