Differences Between Chinese Standards and American Standards for 3PC Ball Valves

Differences Between Chinese Standards and American Standards for 3-Piece Ball Valves (3PC)

1. Design Standards

• China

• GB/T 12237-2020 Steel Ball Valves for Petroleum, Petrochemical and Related Industries

• HG/T 21634-1991 Ball Valves for Chemical Industry Pipelines

• JB/T 7745 General Valves – Ball Valves

• USA

• ASME B16.34 Valves – Flanged, Threaded, and Welding End

• API 608 Metal Ball Valves

• API 6D Pipeline Valves