... ,API K55,API L80,API P110 3.Out Dia casing and tubingStandard: BS,JIS,GB,ASME,ANSI,DINGrade:API J55,API ... /spectrum analyzer/metallographic detector/roughness testing/impact inspection/hardness tester and so on.Production capacity: 300,000 metric tons per year ... would be highly appreciated. We are devoted to offering you high quality products with the most competitive prices. Best Regards, Mr ...