
Standard: API 5CT、API 5B、ISO11960
Steel Grade: J55, K55, N80-1,N80-Q, L80-1, L80-9Cr,L80-1,C90, T95, C95, P110, Q125 .
Tread types: NUE, EUE,VAM,special clearance,VAM TOP,NEW VAM.
Application: Tubing is used to extract petroleum and natural gas from a well
Casing serves as walls of a well.