This standard specifies the basic parameters, technical requirements, test methods and inspection rules of dielectric withstand vo

This standard specifies the method for compiling the model of special test instruments and equipment for electrical engineering. T

JB/T 1120-1999 This standard is a revision of JB 1120-81 "Double-sided detachable connectors". During the revision, some steel gra

This standard specifies the specifications, technical requirements, marking and packaging of clamps. This standard applies to clam

JB/T 1118—2001 This standard is a revision of JB/T 1118—1981 "F1 type float valve". During the revision, the provisions for the we

This standard applies to cranes with a working level not exceeding A and driven by manpower on the ground by pulling chains. JB/T

This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, etc. of manual bea

JB/T 1109-1999 JB/T 1109-1999 Pipe straightening machine types and basic parameters JB/T1109-1999 Standard download decompression