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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
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