應用規范：

1、設計、制造按GB/T12238-1989

2、結構長度按GB/T12221-2005

3、連接法蘭：JB/T79-1994

4、閥門檢查和試驗按JB/T9092-1999

Note：

1、Design Manufacture According to GB/T12238-1989

2、Face to Face According to GB/T12221-2005

3、End Flange Dimension According to JB/T79-1994

4、Valve Check And Test According to JB/T9092-1999

結構：

    B.B浮動結構、防火、防靜電

Structure：

    two pieces， fire-proof structure，antistatic design