Standard reference
1.Design and manufacture standard：API599, API6D, DIN3356
2.Face to face dimension standard：ASME B16.10,DIN3202-F1
3.Flange connection standard : ASME B16.5, DIN2543-2545, GB/TT9113, HG20592, EN1092-1.
4.Test and inspection standard: PI 598, API6D, DIN3230
Material for main parts
| Body |
Cast Iron,WCB,WC1,WC6,WC9,C5,CF8,CF8M,CF3,CF3M |
| Plug |
A182-Gr.F6a, A182-F22. A182-F304 ,F316,F321,F304L,F316 |
| Sleeve |
PTFE |
| Gasket |
PTFE. Flexible graphite + stainless steel |
| Cover |
WCB,WC1,WC6,WC9,C5,CF8,CF8M,CF3,CF3M |