k55 oil tubing 1.J55,K55,N80,L80,P110 steel grade 2.OD:60.3-114.3mm,WT4.83-12.75mm 3.NUE,EUE end form 4.length:R1,R2,R3 k55 oil tubing1.J55,K55,N80,L80,P110 steel grade2.OD:60.3-114.3mm,WT4.83-12.75mm3.NUE,EUE end form4.length:R1,R2,R3 Specifications of productsOD(mm)WT(Ib/ft)GRADETHK(mm)END60.32(2 3/8")4.70H,J,L,P4.83NU , EU5.80C,N,L,P6.45NU5.95L,P6.45EU7.35C,L8.53EU7.45L,P8.53EU73.02(2 7/8")6. ...