Product

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