Delivery condition Heat treatmentannealed, normalized, normalized and tempered Inspections and tests performed Chemical composition inspection, mechanical properties test tensile strength, yield strength, elongation, flaring, flattening, hardness, impact test surface and dimension test, non-destructive test, hydrostatic test. Surface treatment Oil-dip, varnish, passivation, phosphating, shot blasting Size range O.D 17.2-76.2mmw.T 1.6-10mm Bundle packing , crate packing, cutomized