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This standard specifies the classification of cone seal welded 90° elbow pipe joints. JB/T 6382.1-1992 Cone seal welded 90° elbow
This standard specifies the classification of cone seal welded straight-through cone thread pipe fittings. JB/T 6381.4-1992 Cone s
This standard specifies the classification of cone seal welded straight-through conical pipe threaded pipe fittings. JB/T 6381.3-1
This standard specifies the classification of cone seal welded straight cylindrical pipe threaded pipe fittings. JB/T 6381.2-1992
This standard specifies the classification of cone seal welded straight pipe joints. JB/T 6381.1-1992 Cone seal welded pipe joints
This standard specifies the type and basic parameters, technical requirements, test methods, acceptance rules and signs, packaging
This standard adopts ISO 6431-1981. This standard specifies the installation dimensions of detachable single-rod cylinders. This s
This standard specifies the technical requirements, test methods and inspection rules for reversing valves used in pneumatic trans