... Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.Surface treatment:Oil-dip, Varnish, Passivation, Phosphating ... Automobile and rear axle tubeManufacturing and processing of precision equipments, instruments and apparatusProduction Standard, Steel No:DIN2391 St35,St45,St52ASTM A519 ...