Application standards:
1.Design and manufacture conform to:API602、BS5352、ANSI B16.34
2.Connection ends conform to
(1)Socket welded ends conform to ANSI B16.11,JB/T1751
(2)Screw ends conform to ANSI B1.20.1,JB/T7306
(3)Butt- welded ends conform toANSIB16.25,JB/T12224
(4)Flange ends conform to ANSI B16.5,JB79
3.Test and inspection conform to:AP¹598,GB/T13927,JB/T9092
4.Struture features; B.B)( OS&Y)Bolted bonnet,outside screw and yoke (WB) (OS&N) Welded bonnet outside screw and yoke
5.Materials conform to ANSI/ASTM
6.Main materials:LF2; LF3;304(L);316(L);F347;F321:F51.
