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Aviation industry standard test block of the people's Republic of China HB/Z 59-1997
Ultrasonic test block for butt weld of T-joint of industrial boiler
Test block for railway inspection
Manual ultrasonic testing block for ship steel weldCB/T3559-2011
西气东输海上石油检验用试块
Construction industry standard test block of the people's Republic of China JG/T 203-2007
培训考核检验用试块
Other national standard test blocks
3分钟报价,1小时上机