1、設計制造:
API 602、 BS5352、ANSIB16.34;
2、連接端尺寸:
1)承插口尺寸按Socket welded dimension conform
to ANSI B16.11;JB/T1751
2)螺紋端尺寸按Screw ends dimension conform to
ANSI B1.20.1;JB/T7306
3)對焊端尺寸按Butt-welded conform to ANSl B16.25;
JB/T12224
4)法蘭端尺寸按Flanged ends conform to ANSI B16.5;JB79
3、閥門檢查和試驗:
API 598; GB/T13927; JB/T9092
4、結構特征:
A threaded and pressure seal bonnet
5、材料按Materials conform to ANSI/ASTM的規定.