National Standard Ball Valve
Standard
Design and manufacture according to GB/T12237
Structure length according to GB/T12221
Flange connection size according to JB/179
Inspection according to JB/T9092
Main Connection Dimensio
Standard
Design and manufacture according to GB/T12237
Structure length according to GB/T12221
Flange connection size according to JB/179
Inspection according to JB/T9092
Main Connection Dimensions
