Qualification with a cooling medium （water,flowing gas,etc.）on the root side of test coupon weld that is welded from one side qualifies all thicknesses of base metal with cooling medium down to the thickness of the test coupon at the root or 1/2 in.（13mm）,whichever is less.- Y- P5 }3 k- \: q! _
这里的1、test coupon at the root指的是哪里? " G; E' E7 E7 d4 C; e& h7 ]2、all thicknesses of base metal with cooling medium指的是评定所采用试件的整个厚度吗？
发表于 2011-3-30 06:01:12