Typical standards :

 API5CT, PSL1,PSL2,PSL3,Technical Agreement

The typical steel grade:

API, API Tubing and Casing :

J55,K55,N80-1,N80Q,R95,M65,L80,C90,T95,C110 ,P110,Q125,

Tubing and casing for special service

H2s  H2S corrosion –resistant Tubing and Casing

HS80S(S),HS90S(S),HS95S(S),HS100S(S),HS110S(S)

3Cr H2S & CO2:

3Cr H2s and CO2 corrosion –resistant  Tubing and Casing:

13Cr CO2

13Cr series CO2 corrosion –resistant Tubing and Casing

HS80-13Cr,HS95-13Cr,HS110-13Cr

The Casing for thermal production well:HS90H,HS110H…

Collapse –resistant casing :HS80T(T),HS90T(T),HS95T(T)HS110T(T),HS125T(T),HS140T(T),HS150T(T)

Casing with high strength  and high toughness for deep well use :HSV140,HSV150

Low temperature tubing and casing : HS80L,HS90L,HS110L