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在2017年Eylul 14日
表c .61无缝管和焊管本体等级目测无损检测方法汇总表(bkz: 10.14)壁厚的确定超声波探伤漏磁探伤涡流探伤磁粉探伤a1 2 3 4 5 6 7 H40,K55 J55,N80türü1R N N N N N N”ñN80Q,L80 C95,M65, R, R, A, A, A, P110, R, R, A, A, A, NA, C90,T95,Q125 R R C B B N = not required R = required A = one method or any combination of methods应使用B = at[…]