Design Standard   API 608  API 6D  GB/T 12237 
Connectivity Standard   ASME B 16.5  GB/T 9113 
Experimental Standard   API 598  GB/T 13927 
Face to Face    ANSI B 16.10  ASME B 16.10  GB/T 12221-2005  JD-2005 

1-Body Material WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
2-Back cover Q235A 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 25Cr2Mo1V
3-Sleeve SF-1 FB090 FB316
4-Below stem 2Cr13 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
5-Ball WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
6-Platen Q235A 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 25Cr2Mo1V
7- Seat Q235A+PTFE 1Cr18Ni9Ti PTFE 0Cr18Ni12Mo2Ti 25Cr2Mo1V
8-Ball hat 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
9-Sleeve2 SF-1 FB090 FB316
10-On stem 2Cr13 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
11-parking tray WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
12-Bonnet WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
13-Bolt 35 0Cr18Ni9 15Cr1Mo1VA
13-Nut 45 0Cr18Ni9 20CrMo
14- Packing flexible graphite
15-Gland WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
16-Yoke WCB
17-Electric actuator KTQ
18-Elastic sleeve WCB ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
19-Bolt2 35 0Cr18Ni9 15Cr1Mo1VA
19-Nut2 45 0Cr18Ni9 20CrMo
20-Elastic gland Q235A 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 25Cr2Mo1V 

Valve Size [inch]    10  12  14  16  18  2  20  24  28  3  32  36  4  40  44  48  5  56  6  8
[mm]  100  1000  1100  1200  125  1400  150  1600  1800  200  2000  250  300  350  400  450  50  500  600  700  80  800  900 
Pressure Rating [Class]    150.0  300.0  600.0
[MPa]  0.6  1.0  1.6  2.5  4.0  6.4