Desc:Elbow is a common connection pipe in the pipeline,it is often used to change the direction of a pipe.Divided by Angle, the common elbow Angle is 45, 9...
Desc:Galvanized Spiral Welded Pipe mill Line Corrugated Post-tension Duct Machine Product DescriptionSpiral welded pipe mill is used to roll the low carbon...
Desc:Galvanized Spiral Welded Pipe mill Line Corrugated Post-tension Duct Machine Product DescriptionSpiral welded pipe mill is used to roll the low carbon...
