1.product name:fluid steel tube 2.Material:15CrMo 3.Country of origin ... 5.Certificate:ISO 1.product name:structural steel tube 2.Material:15CrMo 3.Country of origin:LuBao ... ,Caps,Pipe Bend, Threadolet, Weldolet,Flanges,steel pipe,Tube,API pipe,Oil line pipe and so on2Out Diameter1/ ... Metallographic analysis E: light spectrum check13Give service ToIf the quality is not ok,I will product new,or return ...