Seamless API 5CT casing pipe / tubing / coupling Standard: API 5CT OD: 1.05''-----4-1/2'' Material: H40, J55, K55, N80, L80, P110 C90, C95, T95,1Cr,3Cr,9Cr,13Cr Pipe end finish: EU, NUJ,Premium connection Length Range: R1, R2, R3 Surface: External coating for antirust