... Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.Surface treatment:Oil-dip, Varnish, Passivation, Phosphating ... Yield Strength, Elongation, Flaring, Flattening, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.Surface treatment:Oil-dip, Varnish, Passivation, Phosphating ...