The utility model relates to a composite pipe of copolypropylene plastic and copper metal pipe, which comprises a copper pipe, a PPR plastic and an adhesive layer and an anticopper agent. Adhesives, anti-copper agent layer is arranged between the copper tube and PPR plastic tube layer, and the one-t......
Read MoreTwin screw extruder is a kind of dispersion in which solid powder and liquid coexist and are mainly composed of solid phase, through forced way to make the basic partical of solid powder mutual bonding and increasing. And form a certain shape and particle size uniform, concentrated particle group.
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