k55 oil tubing 1.J55,K55,N80,L80,P110 steel grade 2. ... .NUE,EUE end form 4.length:R1,R2,R3 k55 oil tubing1.J55,K55,N80,L80,P110 steel grade2.OD:60 ... -12.75mm3.NUE,EUE end form4.length:R1,R2,R3 Specifications of productsOD(mm)WT(Ib/ft)GRADETHK(mm)END60.32 ...