Design standard: API 608 & BS 5351, API 6D & GB/T 12237

Face to face standard:ANSI B 16.10 & GB/T 12221

Flange standard: ANSI B 16.5 JB/T 74~90 GB/T9113.1~9113.4--2000

                         DIN 2543~2548

Temperature pressure standard ANSI B 16.34

Test standard API598 & JB/T 9092

Fire safe standard: API 607/ API SPE 6 FA BS 6755 PAPT 2