... .Chemical composition7.SizeNamepipe line1.Applicantcarbon structural steel seamless steel pipeGradeL245,L360,A53,J55,N80 ,X42 ... A192,ASTM SA179,SA192,BS30595. ApplicantHigh pressure seamless steel tube for chemical Fertilizer EguipmentsGrade:10 ... API SPCE 5L For the purpose of transportation of gas,water,oill in oil&gas industry.2), API SPEC 5CT Tubing ... steam pipeline of boilers. api 5l pipe line