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 ... ,J,L,N,C,T12.75EUShandong Jialong Petroleum Pipe Manufacture Co.,LtdContact: Richard WangTel: 0086-13963547776 Jialong has grown to represent ... quality standards. API 5CT spec j55,k55,n80,l80 seamless oil tubing for oil field service