... :DN400 SCH120 5.Certificate:ISO 1.product name:structural steel tube 2.Material:15CrMo 3.Country of origin:LuBao 4 ... Tee,Reudcer,Caps,Pipe Bend, Threadolet, Weldolet,Flanges,steel pipe,Tube,API pipe,Oil line pipe and so on2Out Diameter1/ ... and so onAPI 5CT:J555StandardAPI,GB,ASTM,ASME,ANSI,DIN,GOST,JIS and so on6Place of OriginShangHai(Bao),HengYang ... will product new,or return the money fluid steel tube