... 3.Thread :NU EU STC LTC BTC 4.Standard: API 5CT... steel tube 1.O.D: 60.3mm144.3mm ... .Thread :NU EU STC LTC BTC 4.Standard: API 5CT...5. My company can make for steel pipe outside ... /2114.304.000101.606.3J55,K55,N80,L80,P1103.92099.577.37J55,K55,N80,L80,P11025127.004.408111. ... K55,N80,L80,P1107133/8339.7212.615320.429.65J55,K55,N80,L80,P11012.415315.3412.19J55,K55,N80,L80,P110 steel tube(API 5CT ...