... 4.certification: API ,ISO 5.MOQ:1 ton 1.API 5L seamless steel pipe/tube2.OD: ... sch48 4.certification: API ,ISO 5.MOQ:1 tonavailable standard: ITEMStandard categoryStandard code1Chinese GBGB/T8163- ... Test, Chemical Analysis,Hardness Test,Charpy Impact Test,Metallographic ExaminationFinal Product TestHydraulic Test, On-line and off-line Ultrasonic Test,Tensile Test ,Yeild Strength,Elogation,Hardness Test ...