Sale china tube pipe 1.Standard: BS,JIS,GB,ASME,ANSI,DIN 2.Grade: ... K55,API L80,API P110 3.Out Dia Sale china tube pipe Standard: BS,JIS,GB,ASME,ANSI,DINGrade:API J55,API ... /metallographic detector/roughness testing/impact inspection/hardness tester and so on.Production capacity: 300,000 metric tons per year.Marking:specification ...