Lined tee ordinary carbon steel is used as the substrate, excellent chemical stability lined thermoplastic composites by cold drawing or rotational molding, it is both corrosion resistance and mechanical properties of steel, there are plastic tubes, slow fouling, easy to grow microbial characteristics, is transported salt, ideals corrosive gas pipelines and other media. Lined tee features: 1. 2 having excellent physical properties. Has excellent corrosion resistance 3. 4 with the same mechanical strength steel. Health non-toxic, non-fouling, no microbial growth, fluid quality assurance 5. Chemical corrosion resistance, soil and marine life, corrosion resistance, cathodic stripping 6. Installation process maturity, convenient 7. Good weather resistance, suitable for desert, salt and other harsh environments 8. Smooth wall, improve transportation efficiency, long life lined tee temperature: 1. steel-lined polypropylene tube (GSF.PP) of medium temperature: -20 ℃ ~ 105 ℃ 2. PVC pipe steel liner (GSF.PVC) of medium temperature: -15 ℃ ~ 65 ℃ 3. steel liner polyethylene pipe (GSF.PE) of medium temperature: -20 ℃ ~ 80 ℃ 4. steel lined polyolefin pipe (GSF.PO ) The medium temperature: -15 ℃ ~ 110 ℃ 5. steel liner PTFE tube (GSF.F4) of medium temperature: -100 ℃ ~ 250 ℃