... : ASTM A106A/A106B/A53A/AP5LGradeB/A178/179 5.ISO,api oil pipeline Heavy wallthickness seamless steel pipeThick wall seamless steel pipeOD ... SPCE 5L For the purpose of transportation of gas, water, oil industry. API SPCE 5CT Tubing is used in extracting petroleum ... pipeline of boilers.Main product: seamless steel pipe,pipe fittings, oil casing steel pipe,weld steel pipe,Rubber Lined Steel Pipe ...