Jinggong 3-1/2 EU J55 S13 coupling with sealing ring API 5CT Near Tianjin Port,fast delivery China famous brand 1.API ... *133.352.40 J55,K55,N80Q,N801,L80,P1103-1/2"NUE107.95*142.883.71 J55,K55,N80Q,N801 ... .756.05 J55,K55,N80Q,N801,L80,P110Casing Coupling4-1/2"STC127.00*158.755.23J55,K55,N80Q,N801,L80 ... welcome to negotiate business with us!! Jinggong API 5 CT 3-1/2 EU J55 S13 coupling with sealing ring