1,api 5ct. 2,ISO9001-2008/ISO11960 3,third party inspection supported. 4,API 5CT-1043 casing and tubing Manufacturing MethodHot rolled seamlessSize (OD)4-1/2”,5”,5-1/2”,6-5/8”,7”,7-5/8”8-5/8”,9-5/8”,10-3/4”,11-3/4”GradeH40,J55,K55,N80API ConnectionsRound thread(STC and LTC),Buttress thread (BTC)Length RangeR1,R2,R3PackageAccording to customers’ requirementsStandards:API Specification 5CTISO 11960 ...