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Specifications:HDPE pipe reinforced by steel frame The pipes is very advanced&modern ones, so that the pipes represents the Development trend of pipelines in the world and enjoys a reputation of(greenpipelines of the 21st century). Excellent corrosion resistance, pressure bearing Capability, heat preservation&wearing resistance, steel mesh can expand or Contract along with plastic pipe according to the change of temperature, etc. A. Qualification: Four chiness patenrs&two american patents B. Property inspection&test 1. china national test center of polymer&chemical building materials Test of comprehensive properties 2. istitute for environmental health&related product safety, china cdc Sanitary characteristics 3. bodycote broutman inc. Chicago, usa Hydrostatic desgn base 4. belgium research center for pipes and fittings(becetel). Resistance to rapid crack propagation 5. pipelife research&development institute, netherland. Hoop rigidity 6. mannesmannrohren service gmbh, germany. Burst t