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 ... and beyond the imagination of the people. It is known for high quality and innovative product range coupled with committed services. Quality ... quality standards. API 5CT spec j55,k55,n80,l80 seamless oil tubing for oil field service