The companys eading stel pioes industy incudes medum &. smll-dianeter hotrolld seamless ubes specily ally rold tubes.cold-rolld and cold-drawn seamlesstubes expanding large oiameter seamlss ube, edium-diamer ERNW welded sel pipes large doiemeter longitudinal submerged-arc weled steel pies lare spiralseal pipesand all kinds of pipe fittings,such as bend, elbow, reducer.tee,flanges.coupling,caps.etc for the connection of the pipeline.