... , service life is long,high security, highly pressurized, widely used Typeseamless steel pipe spiral steel pipe alloy pipe welded pipe stainless ... cold drawn,140mm above hot rolled,273mm above hot expandPacking6 steel strip, bundles, Caps, Plastic wrap, loading belt, or ... wear-resisting ,aging resistant , service life is long, high security, highly pressurized, widely usedMin order3 tons steel pipe