Techalloy80S-B6(Techalloy502)(AWSA5.287ER80S-B6)美国泰克罗伊焊丝，泰克罗伊焊丝，Techalloy80S-B6焊丝，美国Techalloy80S-B6焊丝，泰克罗伊Techalloy80S-B6焊丝，ER80S-B6焊丝，美国ER80S-B6焊丝，泰克罗伊ER80S-B6焊丝Techalloy80S-B8(Techalloy505)(AWSA5.28ER80S-B8)美国泰克罗伊焊丝，泰克罗伊焊丝，Techalloy80S-B8焊丝，美国Techalloy80S-B8焊丝，泰克罗伊Techalloy80S-B8焊丝，ER80S-B8焊丝，美国ER80S-B8焊丝，泰克罗伊ER80S-B8焊丝)