Sell API casing tubing from china 1.Standard: BS,JIS,GB,ASME,ANSI,DIN 2.Grade:API J55,API K55,API L80,API P110 ... 3.Out Dia Sell API casing tubing from chinaStandard: BS ... ,JIS,GB,ASME,ANSI,DINGrade:API J55,API K55,API L80,API P110Out Diameter:2 3/8 ...