Fixed cast steel ball valve with full welding structure
Design Standard :GB/T 12237 GB/T 19672 API 6D
Face to Face:GB/T 12221 API 6D ASME B16.10
FIanged Size:GB/T 9113 JB/T 79 ASME B16.5 ASME B16.47
Test&Inspection:JB/T 9092 GB/T 19672 API 598 API 6D