... .steel pipes 2.O/A trade product 3.seamless,welded,erw,ssaw,lsaw pipes 4.API,CE,ISO 5. ... →Length-Measuring and Weighing→Coating-Marking→StorageEnds ProcessingBevelled or Plain EndSurface Process1 Oiled2 Galvanized3 3PE Anti-corruption coated 4 According ... Impact Test,Metallographic ExaminationFinal Product TestHydraulic Test, On-line and off-line Ultrasonic Test,Tensile Test ,Yeild Strength,Elogation ...