Prestressed plastic corrugated pipe has two kinds i.e. round and flat pipes. They are mainly used in concrete structures. Being used as hole-making pipe of prestressed tendon, it is resistant to erosion and has excellent physical properties such as no electric conduction, preventing from erosion of trifle electric current, airproof, rust resistance, low load, anti-leakage, high intensity and stiffness, resistance to impact and jam on, as well as reducing the loss of the prestress in the course of swelling and stretching. The products of this unit are widely used in projects with concrete such as cloverleaf junction of expressway, viaduct, railway, bridge and so on.
When change certain moulds and mould blocks, this extrusion line can produce such single-wall corrugated pipes as pipes of PP, PE, EVA, PVC, etc.
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