GB/T Globe Valve
Design &Manufacture Standard
Design and Manufacture: GB/T 12235
Face to Face: GB/T 12221
End flange dimensions: JB/T 79
Test: JB/T 9092
Design &Manufacture Standard
Design and Manufacture: GB/T 12235
Face to Face: GB/T 12221
End flange dimensions: JB/T 79
Test: JB/T 9092