High quality Alloy 20 pipes: 1.Forging products: round bar, flange, ball, ... -C St37.4 St52 DIN1629/4 DIN1629/3 A335-P11 A335-P22 A335-P5 TechnicsCold ... plastic caps and mark on the pipe,hexagon in bundle Applications rangeconstruction,chemical,gas,shipbuilding,metallurgy, ... available according to requirement 2.Anti-corrosion and high-temperature resistant SpecificationsAlloy 20 Forging products: round ...