Sell API casing tubing from china 1.Standard: BS,JIS,GB,ASME,ANSI,DIN 2.Grade: ... L80,API P110 3.Out Dia Sell API casing tubing from chinaStandard: 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 ...