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The PVC-U tube is the same as the UPVC tube. UPVC is also called PVC-U, which is usually called hard PVC. It is an irregular thermoplastic resin made by a polymerization reaction of chlorine chlorine.
Steel Angle sizes chart in mm.It is often used in the engineering field to refer to the specification and model table of angle steel and the complete theoretical weight table of angle steel. Because a...>