1) Production enforce standard:
Desing And Manutacture: ANSI B16.34 BS1873
Face to face/End to end: ANSI B16.10
Flange dimensions: ANSI B16.5
Butt welding dimension: ANSI B16.25
Pressure temperature lating: ANSI B16.34
Inspection and test: API 598

2)Mostly parameter
Size: 2"-24"
Pressure stage: Class150Lb--1500Lb
Material: WCB WC6 WC9 LCB CF8 CF3 CF3M CF8M
Type of operation: Manual, Conical gear actuator, Electric actuator

Power station valves, check valves, ball valves, globe valves, safety valves, pneumatic ball valves and so on.
Most of our products are exported to American and European countries.
Zhengguang has high reputation to supply suctomers commodity valves in high quality.

Full certifications such as ISO 9001: 2000, CE, API 6D, OH SMS 28001 etc.

And much more for your easy supply chain management!