Specifications of oil well casing
Dimension range(OD inch):4 1/2”—30”
Dimension range(OD mm):114.3—762
Standard: API SPEC 5CT , ISO11960, GOST
Length: R1, R2, R3
Main Steel Grade: H40, J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc
Type of Casing:Plain, BTC, STC, LTC, Other Premium Thread.