... oil, lacquer, passivation, phosphating, etc; 6) Plastic plugs or caps on both ends as required; 7) Packing Type: Round, Square, Rectangle ... , Yield strength, Elongation), Technics Properties(Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, etc), Exterior Size Inspection, Nondestructive Test, Hydrostatic Test; 9) Main Applications: Boiler and ...