DESIGN STANDARD: API 608 & BS 5351,API 6D & GB/T12237

FACE TO FACE: ANSI B16.10 & GB/T 12221

FLANGE STANDARD: ANSI B 16.5, JB/T 74~90 GB/T 9113.1~9113.4---2000

                                 DIN 2543~2548

TEMPERATURE PRESSURE STANDARD: ANSI B 16.34

TEST TANDARD:API 598 & JB/T 9092

FIRE SAFE STANDARD: API 607/ API SPE 6FA , BS 6755 PAPT 2