Features:

1. Design and manufacture: ASME/ANSI B16.34; API602; GB/T 12224; GB/T12228; GB/T12225

2. Ends connection

1) SW dimension: ASME/ANSI B16.11; JB/T1761

2) Screwed dimension: ASME/ANSI B1.201(NPT); GB/T7306-87(RC)

3. Structural feature: B.B. Or W.B; OS&Y

4. Sealing accessory material: according to "ordering guide"

5. Body material: A105; LF2; F11; F22; F304; F316; F304L; F316L

6. Valve inspection and test according to API 598 or GB/T 13927