This Part of the JB/T 5000 specifies the ultrasonic, magnetic-powder and penetration testing methods and quality grades of forged steel. This Part applies to no

JB/T 5000 specifies the ultrasonic inspection, ray inspection, magnetic particle inspection and penetrate inspection with its relative quality grade.

This part of JB/T 5000 specifies the technical requirements, inspection rules, test methods, quality certificates and markings for general purpose large forging

This part of JB/T 6758 specifies the type, product variety structure, technical requirements, acceptance rules and packaging marking of the continuously transpo

This Part of JB/T 6758 specifies the general requirements for less paper insulated netting-typed continuous transposed conductors of polyvinyl acetal enamelled